CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Volume rendering is a technique for visualizing 3D arrays of sampled data. It has applications in areas such as medical imaging and scientific visualization, but its use has been limited by its high computational expense. Early implementations of volume rendering used brute-force techniques that require on the order of 100 seconds to render typical data sets on a workstation. Algorithms with optimizations that exploit coherence in the data have reduced rendering times to the range of ten seconds but are still not fast enough for interactive visualization applications. In this thesis we present a family of volume rendering algorithms that reduces rendering times to one second. First we present a scanline-order volume rendering algorithm that exploits coherence in both the volume data and the image. We show that scanline-order algorithms are fundamentally more efficient than commonly-used ray casting algorithms because the latter
... Travis Gorkin GPU Programming and Engineering, June 2009 Motivation Volume Rendering Foundation Volumetric Information Optical Model Amassing Comparisons Volume Rendering on the CPU Raymarching Calculation Volume Rendering on Representation Equipment
The software platform for advanced life science research, Leica Application Suite Advanced Fluorescence (LAS AF), originally launched in 2005 for Leica Microsystems widefield and confocal microscope systems, has been released in its 3.2 version. This version focuses on 3D analysis, 3D measurements and 3D visualization.
Provided is a surgery assistance system to perform relatively fast and accurate alignment between three-dimensional surface shape data acquired by measurement using a three-dimensional surface shape scanner and three-dimensional internal shape data acquired in advance, even when the position of the patient and the surface shape of the skin of the patient change during the surgery. A surgery assistance system ( 1 ) includes a three-dimensional surface shape scanner ( 20 ) for acquiring three-dimensional surface shape data by measuring a three-dimensional surface shape of a patient ( 60 ) and a computing device ( 40 ) for processing the data from the three-dimensional surface shape scanner. The computing device stores therein three-dimensional internal shape data of the patient that is acquired in advance by measurement using a three-dimensional tomography scanner ( 30 ). The computing device has a unit that aligns the three-dimensional internal shape data and the three-dimensional surface shape
Zonal changes in the three-dimensional morphology of the chondron under compression: the relationship among cellular, pericellular, and extracellular deformation in articular cartilage ...
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Dynamic volume rendering of the beating heart is an important element in cardiac disease diagnosis and therapy planning, providing the clinician with insight into the internal cardiac structure and functional behavior. Most clinical applications tend to focus upon a particular set of organ structures, and in the case of cardiac imaging, it would be helpful to embed anatomical features into the dynamic volume that are of particular importance to an intervention. A uniform transfer function (TF), such as is generally employed in volume rendering, cannot effectively isolate such structures because of the lack of spatial information and the small intensity differences between adjacent tissues. Explicit segmentation is a powerful way to approach this problem, which usually yields a single binary mask volume (MV), where a unit value in a voxel within the MV acts as a tag label representing the anatomical structure of interest (ASOI). These labels are used to determine the TF employed to adjust the ...
Lokeren, Belgium, June 3rd, 2018. Orbit GT releases major upgrade of 3D Mapping Cloud SaaS platform.. "This is quite some upgrade : full of new capabilities at very agressive prices,", says Peter Bonne, CEO of Orbit GT. "With this upgrade, 3D Mapping Cloud basically renders all other platforms obsolete. Weve got all Reality Capture systems covered, weve got multi-sensor systems covered, weve got real time fusion and CRS transformation covered, and now we throw in 100GB free storage and 5 free guest users for everyone.". 3D Mapping Cloud is Orbit GTs SaaS platform designed to host, process and share massive volumes of LiDAR, Imagery and other reality capture data, however it has been collected. It supports high resolution street-level or Indoor Mobile Mapping up to aerial Oblique mapping, each with fully automated adapted viewer behavior. Data can be shared informally using a 1-click Bookmark, or via a formal nicely setup Publication.. This new upgrade also inlcudes a single user subscription ...
Acoustical data are usually displayed as two-dimensional echograms - vertical dimension through the water column, and time or distance along the horizontal axis. These echograms are used for viewing and evaluating the data. We have developed three-dimensional visualizations of multi-frequency acoustic data to view the data in geographical space from small to large spatial scales (3D Echograms). Acoustic data are commonly used to provide relative indices of species-specific abundance and biomass. In order to scale the relative indices to absolute estimates, we must incorporate a measure of the echo amplitude from an individual fish (3D Modeling). Fish are complicated acoustic scatterers by nature of their complex anatomy and behavior. We have developed three-dimensional visualizations of the fish body and swimbladder from x-ray and Computerized Tomography (CT) images (3D Computerized Tomography). These images are used in theoretical models to improve prediction of acoustic scattering over a ...
Among all digital representations we have for real physical objects, 3D is arguably the most expressive encoding. 3D representations allow storage and manipulation of high-level information (e.g. semantics, affordances, function) as well as low-level features (e.g. appearance, materials) about the object. Exploiting this 3D structure promises to improve our ability to build machines and autonomous agents that sense, understand, and act on the physical world around us. Historically, 3D visual computing has predominantly focused on single 3D models or small model collections. Now, however, with the advent of large 3D repositories of object models and inexpensive 3D scanning, the opportunity arises to re-define the field from the perspective of 3D big data.. In this talk, I will discuss a series of efforts on data-driven 3D visual computing, including constructing an information-rich large-scale 3D model repository (ShapeNet), generating synthetic data for supervising neural networks ...
February 2, 2010 - Two protocols for reduced-dose cardiac imaging, without compromising image quality, may help enhance the performance of gamma cameras by shortening acquisition times, enabling reduced radiopharmaceutical doses and increasing image resolution.. Nuclear medicine image reconstruction software maker UltraSPECT said its imaging protocols minimize radiation exposure to patients and staff, in addition to mitigating the impact of the technetium-99 (Tc-99m ) isotope shortage. The companys FDA-cleared and CE mark-approved Xpress.Cardiac and Xpress3.Cardiac products allow the utilization of lower dose imaging protocols with no compromise in imaging acquisition times and outcomes. UltraSPECT products feature connectivity to the imaging systems of all three major nuclear medicine camera manufacturers, supporting most existing camera hardware and workstation versions. With the Xpress.Cardiac clinicians can apply the one-day rest/stress protocol, with scan times as defined by the ASNC ...
FOR IMMEDIATE RELEASE: WOODSIDE, CA: March 12, 2004: To determine if a saddle FITS a horses back, the laws of geometry require the comparison of all three (3) dimensions, of both surfaces, in relationship to each other. Unfortunately, saddles are not measured in three-dimensions. There is Gullet Width and Seat Length, but there are no standardized three-dimensional measurements to be able to relate the curvature of the horses backs to the shapes of saddles. This lack of an accurate calibrated measurement method is the reason why Equestrians have such difficulty finding a saddle to FIT their horse. To solve this challenge SADDLETECH has just released a new and improved MK I I edition of the CLASSIC SADDLETECH GAUGE that was originally released in 1997. The SADDLETECH GAUGE Mk I I is a simple mechanical instrument that permits the polyform of the shape of horses back and corresponding saddle to be defined by angles and arcs, providing the three-dimensional measurements required to determine ...
The Global 3D Rendering and Virtualization Software market is expected to grow at a CAGR of 21.4 percent over the period 2011-2015. One of the key factors contributing to this market growth is the increasing demand from the global Entertainment industry. The Global 3D Rendering and Virtualization Software market has also been witnessing an increasing focus on virtualization software. However, increasing popularity of open source communities could pose a challenge to the growth of this market ...
Debatin, Maurice, Stsepankou Dzimitry, and Jürgen Hesser. 2013. "Ct Reconstruction From Few-Views By Higher Order Adaptive Weighted Total Variation Minimization". Proc. Intl. Mtg. On Fully 3D Image Reconstruction. Proc. Intl. Mtg. On Fully 3D Image Reconstruction. Proc. Intl. Mtg. on Fully 3D Image Reconstruction ...
Bardeen, C., O. B. Toon, E. Jensen, M. E. Hervig, C. E. Randall, S. Benze, D. R. Marsh, and A. Merkel (2010), Numerical simulations of the three-dimensional distribution of polar mesospheric clouds and comparisons with Cloud Imaging and Particle Size (CIPS) experiment and the Solar Occultation For Ice Experiment (SOFIE) observations, J. Geophys. Res., 115, D10204, doi:10.1029/2009JD012451 ...
Dimensional analysis is a concept that chemists use to convert units of measurement. Through this concept, chemists are able to convert any unit to another unit that is in the same dimension....
J. K. Adams, V. Boominathan, B. W. Avants, D. G. Vercosa, F. Ye, R. G. Baraniuk, J. T. Robinson, A. Veeraraghavan, "Single-Frame 3D Fluorescence Microscopy with Ultraminiature Lensless FlatScope," Science Advances, Vol. 3, No. 12, 8 December 2017.. Abstract: Modern biology increasingly relies on fluorescence microscopy, which is driving demand for smaller, lighter, and cheaper microscopes. However, traditional microscope architectures suffer from a fundamental trade-off: As lenses become smaller, they must either collect less light or image a smaller field of view. To break this fundamental trade-off between device size and performance, we present a new concept for three-dimensional (3D) fluorescence imaging that replaces lenses with an optimized amplitude mask placed a few hundred micrometers above the sensor and an efficient algorithm that can convert a single frame of captured sensor data into high-resolution 3D images. The result is FlatScope: perhaps the worlds tiniest and lightest ...
WHAT IS A 2D/3D/4D ULTRASOUND?. 2D ultrasound works by listening to sound waves in a single plane. The ultrasound is directed out and reflected back again. An ultrasound is the interpretation of these reflected sound waves to form a visualization of the baby.. In 3D ultrasound, the same ultrasound used in traditional 2D is emitted-this time at multiple angles. 3D ultrasound images are created by an algorithmic process commonly know as surface rendering. These multiple reflections are interpreted through sophisticated software, and an accurate 3D image of the baby is instantly created. These amazing rendered images are displayed with incredible surface detail which delineates both body and facial features.. A 4D ultrasound is captured in the same manner as 3D ultrasound-but the rendering occurs many times per second. Instead of looking at a single still image (3D), you are now able to view real-time video of the baby in the womb (4D). In this case, that 4th Dimension is time.. We offer ...
Conventionally volume measurements can be made by using multiplanar or VOCALTM (Virtual Organ Computer-aided AnaLysis). Recently, a new technique, XI VOCALTM (eXtended Imaging VOCAL) has been described. Combined with the inversion mode, measurements for the liquid-filled structures can also be made. The potential use in clinical diagnosis and prediction of pathologies of volume measurements particularly in the first trimester are yet to be investigated.. 3D ultrasound is found to be superior to 2D parameter in volumetry measurement. However, currently, there are still very few studies done to evaluate the potential use of volumetry measurement in clinical practice, especially of the validity and reproducibility of XI VOCALTM; and the variation of results obtained within different ultrasound machines. Due to the potential use of volumetry measurements in clinical practice, the accuracy in volumetry measurement is very important and the development of new technique need to be fully explored so ...
Virtual Reconstruction serves as an introduction to the principles of three-dimensional visualization techniques as they relate to fossil reconstruction and reverse engineering. It covers data acquisition, processing, virtual reconstruction, visualization, manipulation, reverse engineering, and applications to biomedicine. An adjunct Web site provides access to software, as well as sample data sets and relevant Internet links.Illustrating the concepts, methods, and applications of computer-assisted virtual reconstruction. Virtual Reconstruction demonstrates how readers can transform organisms from physical reality into virtual reality. Specifically, the authors provide the knowledge and tools needed to enable researchers to reconstruct fragmented and distorted fossil specimens in 3-D images so that their function, biomechanics, developmental changes, and evolutionary modifications can be determined. Likewise, the authors demonstrate how the same 3-D techniques can be used to enhance medical ...
Various studies aim to understand the fundamentals of kicking, primarily the instep kick commonly used by soccer players. Of those studies, most are limited to a 2D analysis using high-speed cameras for position tracking and electromyography to observe muscle activity. The few studies that investigate a 3D model are limited in their position tracking capabilities and focus mainly on joint flexion potentials and foot speed. To the authors knowledge no study of this caliber has been performed on the kinematics and dynamics of place kicking in American football. This thesis uses a 12 camera high-speed motion tracking system to investigate the kicking techniques of three place kickers of different experience levels by observing several kicks from each. Results demonstrate that the quality of a place kick cannot be determined solely on foot speed but direction and location of foot velocity and the force of the kicking leg at impact. Position and orientation of the plant foot proves to be a driving factor in
Principal Investigator:AZUMA Hirohiko, Project Period (FY):1995 - 1996, Research Category:Grant-in-Aid for Scientific Research (C), Section:一般, Research Field:Orthopaedic surgery
3D ultrasound imaging is quickly gaining widespread clinical acceptance as a visualization tool that allows clinicians to obtain unique views not available with traditional 2D ultrasound imaging and an accurate understanding of patient anatomy. The ability to acquire, manipulate and interact with the 3D data in real time is an important feature of 3D ultrasound imaging. Volume rendering is often used to transform the 3D volume into 2D images for visualization. Unlike computed tomography (CT) and magnetic resonance imaging (MRI), volume rendering of 3D ultrasound data creates noisy images in which surfaces cannot be readily discerned due to speckles and low signal-to-noise ratio. The degrading effect of speckles is especially severe when gradient shading is performed to add depth cues to the image. Several researchers have reported that smoothing the pre-rendered volume with a 3D convolution kernel, such as 5x5x5, can significantly improve the image quality, but at the cost of decreased ...
Journal of Spectroscopy is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles on the theory and application of spectroscopy across all disciplines. Articles may contribute to fundamental research, or be highly applied, and must report important experimental results or relate to the development of new methods and instrumentation.
Principal Investigator:ORII Yutaka, Project Period (FY):1992 - 1994, Research Category:Grant-in-Aid for Developmental Scientific Research (B), Research Field:医学一般
OBJECTIVES: To develop and evaluate a fully automatic method to measure diameters of the ascending and descending aorta on non-ECG-gated, non-contrast computed tomography (CT) scans.. MATERIAL AND METHODS: The method combines multi-atlas registration to obtain seed points, aorta centerline extraction, and an optimal surface segmentation approach to extract the aorta surface around the centerline. From the extracted 3D aorta segmentation, the diameter of the ascending and descending aorta was calculated at cross-sectional slices perpendicular to the extracted centerline, at the level of the pulmonary artery bifurcation, and at 1-cm intervals up to 3 cm above and below this level. Agreement with manual annotations was evaluated by dice similarity coefficient (DSC) for segmentation overlap, mean surface distance (MSD), and intra-class correlation (ICC) of diameters on 100 CT scans from a lung cancer screening trial. Repeatability of the diameter measurements was evaluated on 617 baseline-one year ...
To remove an undercut part from three-dimensional data of the inner face, the program includes a surface model creating means to create a surface model based on three-dimensional data of a gypsum model including an abutment tooth, a cutting direction specifying means to specify a direction of a cutting bar, and a surface model creating means to create a surface model for machining by changing the three-dimensional data to have new coordinates by determining a base axis in parallel with the cutting bar in the surface model and plane moving coordinates of the cutting bar, and converting the coordinates of a point which becomes an undercut part, to be equal to the plane moving coordinates of a point having a high height from a specified face rectangular to the base axis at the opposite side of the occlusion face and a long distance from the base axis.
With the introduction of the MyLab™25 Gold, Esaote establishes a new standard in the ultrasound portable systems class. In combination with the high-level of performance in general imaging, MyLab™25Gold offers an advanced package dedicated to obstetrics and gynecology. All the technologies and features mentioned in 2D imaging are the basis on which sophisticated algorithms are able to deliver outstanding 3D/4D volume reconstructions. X4D technology makes volumetric ultrasound scanning easier and more effective than ever and provide raw data for further elaborations and reconstructions. X4D technology provides astonishing volume reconstruction, normally delivered by high-end systems. The easy and comprehensive user interface allows immediate elaboration of the acquired data. Multi-planar and tomographic visualization provide better evaluation of the shape and dimensions of the reconstructed volumes. ...
With the introduction of the MyLab™25 Gold, Esaote establishes a new standard in the ultrasound portable systems class. In combination with the high-level of performance in general imaging, MyLab™25Gold offers an advanced package dedicated to obstetrics and gynecology. All the technologies and features mentioned in 2D imaging are the basis on which sophisticated algorithms are able to deliver outstanding 3D/4D volume reconstructions. X4D technology makes volumetric ultrasound scanning easier and more effective than ever and provide raw data for further elaborations and reconstructions. X4D technology provides astonishing volume reconstruction, normally delivered by high-end systems. The easy and comprehensive user interface allows immediate elaboration of the acquired data. Multi-planar and tomographic visualization provide better evaluation of the shape and dimensions of the reconstructed volumes. ...
Anaglyph printing - think of the red-and-blue 3D glasses used to transform 2D images to 3D images in comics, magazines, books, and newspapers - came into being when the continuous-tone printed anaglyph was invented by French physicist Louis Ducos du Hauron in 1891.. The technique works by combining the left and right images of a stereoscopic image pair into the red and blue color channels of the output anaglyph image. With the red/blue 3D glasses, the left eye sees only the red channel of the anaglyph image, and the right sees only sees the blue. If the anaglyph 3D image has been constructed correctly, the viewer sees a pleasing 3D image on the printed page.. The project team, led by Curtin research engineer Andrew Woods, targeted crosstalk problems which are visible as ghost-like shadows. Their paper published recently in the SPIE journal Optical Engineering details seven recommendations for overcoming crosstalk.. "The largest reduction in crosstalk is likely be achieved by using inks which ...
Used with permission IEEE GG&A July Parallel Volume Rendering Using Binary-Swap Image Composition Kwan-Liu Ma ICASE, NASA Langley Research Center James S. Painter Department of Computer Science,
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Unlike existing methods for three-dimensional seed reconstruction, the proposed method uses raw tomography data (sinograms) instead of reconstructed CT slices. The method is for three-dimensional reconstruction of an object inserted in a living or non-living body. It comprises obtaining raw tomography data for an area of the body where the object is inserted; detecting a trace of the object in the raw tomography data, by extracting points from the trace; and estimating at least one of a position and an orientation of the object using the points and a known shape of a trace of the object in the raw tomography data.
Latest news and research breakthroughs on Pregnancy Ultrasound Using 3D and 4D Scans. Last updated on Dec 29, 2017 with over 178 News and research items available on the subject. Freely Download - Pregnancy Ultrasound Using 3D and 4D Scans News Widget
Ultrasound scans, also known as sonograms, use the reflection of high-frequency sound waves to create images. The standard 2D obstetric ultrasound shows a flat, black and white picture on a screen.. 2D ultrasounds can be done during any trimester, but are often performed early in gestation to confirm the pregnancy and to help establish the due date. This scan is usually repeated at 18-20 weeks of gestation to check for normal growth and development, and to reveal the sex of the baby if desired.. While trained medical professionals have become adept at recognizing features of the developing fetus in 2D, parents are better able to visualize the baby with the advent of 3D ultrasonography.. A 3D ultrasound creates a different perspective by merging a series of 2D images taken from various angles into a composite to form a 3D picture. Because of this increased resolution and visibility, 3D ultrasounds capture a more detailed and realistic representation of the developing baby.. Because 3D ultrasounds ...
phdthesis{T2013, abstract = {This thesis introduces a collection of new real-time rendering techniques and applications for focus+context visualization of interactive 3D geovirtual environments such as virtual 3D city and landscape models. These environments are generally characterized by a large number of objects and are of high complexity with respect to geometry and textures. For these reasons, their interactive 3D rendering represents a major challenge. Their 3D depiction implies a number of weaknesses such as occlusions, cluttered image contents, and partial screen-space usage. To overcome these limitations and, thus, to facilitate the effective communication of geo-information, principles of focus+context visualization can be used for the design of real-time 3D rendering techniques for 3D geovirtual environments (see Figure). In general, detailed views of a 3D geovirtual environment are combined seamlessly with abstracted views of the context within a single image. To perform the real-time ...
phdthesis{T2013, abstract = {This thesis introduces a collection of new real-time rendering techniques and applications for focus+context visualization of interactive 3D geovirtual environments such as virtual 3D city and landscape models. These environments are generally characterized by a large number of objects and are of high complexity with respect to geometry and textures. For these reasons, their interactive 3D rendering represents a major challenge. Their 3D depiction implies a number of weaknesses such as occlusions, cluttered image contents, and partial screen-space usage. To overcome these limitations and, thus, to facilitate the effective communication of geo-information, principles of focus+context visualization can be used for the design of real-time 3D rendering techniques for 3D geovirtual environments (see Figure). In general, detailed views of a 3D geovirtual environment are combined seamlessly with abstracted views of the context within a single image. To perform the real-time ...
We designed the SWC framework and implemented it in neuTube 1.0 (www.neutracing.com) to improve the efficiency of reconstructing neuron structures accurately. Guided by the framework, the software combines 2D/3D visualization, semi-automated tracing algorithms, and flexible editing options to simplify the task of neuron reconstruction. The SWC framework is not designed to solve the problem of high-throughput neuron tracing, which is different and more challenging. As revealed by the recent DIADEM competition (Liu, 2011), a reliable and generally applicable high-throughput neuron-tracing tool may not be available in the near future. While waiting for the ideal solution, neuroscientists will benefit from better neuron reconstruction tools. Therefore, the goal of the SWC framework is to provide a general architecture, which can adopt state-of-the-art image analysis methods and modern software techniques, for building better interactive neuron reconstruction tools.. Our framework has one limitation, ...
Animated and rigged 3D architecture elements models for download, files in 3ds, max, c4d, maya, blend, obj, fbx with free format conversions, royalty-free license, and extended usage rights.
The aim of this study was to evaluate the accuracy of three-dimensional ultrasound distance and volume measurements using a commercially available three-dimensional ultrasound scanner. Sixty-two distance measurements were performed twice on an ultras
Instruments and techniques separate or spread adjacent bony structures by inserting a distal spreader assembly into the space between the adjacent bony structures and actuating the spreading members with a proximal actuator assembly.
DISCUSSION. 3D-CT volume-rendered images are important tools for pre- and post-surgical examinations of head and neck tumors, and they allow comparisons between the clinical conditions of lesions in different periods, during the follow-up of treatments1,2,3,10,13. Udupa et al.17 (1991) stated that 3D-CT volume-rendered images resulting from appropriate data processing would enable observations equivalent to those obtained by means of the surface method. Based on our results we think that recent developments of new graphic computational devices aroused a growing interest for further utilization of 3D-CT images. This perception aroused the proposal of comparing the precision and validity of both techniques of 3D-CT image rendering. The 3D volume method was a technical improvement of the 3D surface method, allowing the utilization of color and transparency resources, and a better visualization of anatomical structures. Udupa et al.17 (1991) highlighted the fact that not all of the voxels obtained ...
Since the structure of proteins is more conserved than the sequence, the identification of conserved three-dimensional (3D) patterns among a set of proteins, can be important for protein function prediction, protein clustering, drug discovery and the establishment of evolutionary relationships. Thus, several computational applications to identify, describe and compare 3D patterns (or motifs) have been developed. Often, these tools consider a 3D pattern as that described by the residues surrounding co-crystallized/docked ligands available from X-ray crystal structures or homology models. Nevertheless, many of the protein structures stored in public databases do not provide information about the location and characteristics of ligand binding sites and/or other important 3D patterns such as allosteric sites, enzyme-cofactor interaction motifs, etc. This makes necessary the development of new ligand-independent methods to search and compare 3D patterns in all available protein structures. Here we introduce
Nvidia FlameWorks is a system for generating fire, smoke and explosion effects for games. It combines a state-of-the-art grid-based fluid simulator with an efficient volume rendering engine. The library can also be used for energy based spell effects using volume rendering. At the end anything requiring a real time fluid simulation coupled with volume rendering. The simulator uses a highly-optimized solver which enables the simulation of high resolution grids in real-time. It supports collisions with standard primitives and includes a combustion model for generating flame effects ...
The 4D Viewer of MetaMorph NX from Molecular Devices lets you render image stacks as 3D objects. The video covers an overview of the 4D viewer, isometric surface rendering, volumetric rentering, and data slicing tool.
We and others have used pre-clinical ultrasound to visualize cardiac dynamics in developing chick and mouse embryos (Broekhuizen et al.,1999; Phoon,2001; Butcher et al.,2007a). Ultrasound has the advantage of high ungated temporal resolution (over 250 frames/sec), but can also be gated for better resolution. For small animals, information gained is almost exclusively 2D with spatial resolution ∼30-50 μ. Contrast for ultrasound is challenging in embryos, as microbubble size is not negligible in relation to vessel diameter and are challenging to inject (Alter et al.,2009). 3D micro-MRI manipulates intrinsic magnetic properties of tissues to generate contrast and can achieve spatial resolutions less than 20 μ for fixed tissues. In addition, manipulation of electron spins with magnetic stimulation can help improve tissue contrast locally without the need of exogenous dyes. Isotropic voxel size, however, is inversely proportional to the size of the volume interrogated, which limits the ability to ...
Lenslet arrays with a low fill factor can improve the viewing angle in integral imaging. However, the viewing resolution is degraded by low fill-factor lenslets because the spatial sampling rate of the ray information is reduced. We show that both the viewing resolution and the viewing angle of integral imaging can be improved by adopting a moving array-lenslet technique.. © 2003 Optical Society of America. Full Article , PDF Article ...
3D ultrasound imaging of the female pelvis is one of the most important recent advances in diagnostic imaging. Volume acquisitions can provide a large number of images of the pelvic organs simultaneously and in any plane or orientation desired. The coronal plane of the uterus is only visible when reconstructed from a volume and is key to imaging the uterus for indications such as uterine anomalies...
Constructing a three-dimensional visualization of the brain and its various parts is a challenging task for most people, and this diagram and its companion the
3D ultrasound / 4D ultrasound frequently asked questions about your ultrasound session. We are located in Webster, NY. Get the most out of your experience.
Math for simple 3D coordinate rotation (python) import numpy. dot ( M , vec ). SP3D C DURACIÓN ommon Training 1 día User Interface • Overview • Layout Session Management • Session template • Session File • Options View Manipulations • Common Views • Zoom Tool • Window Area • Refresh View • Active View Control • Rotate View • Looking at Surface Formatting. jar: Installation: Download Interactive_3D_Surface_Plot. Note that image scrolling is still enabled in 3D mode. You can rotate your data samples by multiplying the matrix of samples by a rotation matrix. 3D Plotting functions for numpy arrays¶ Visualization can be created in mlab by a set of functions operating on numpy arrays. pygalmesh makes it easy to create high-quality 3D volume meshes, periodic volume meshes, and surface meshes. Before we start, let us import the needed files. Abstract: 3D rotation of volume images has become increasingly important for 3D image analyses, e. A note on the time dimension ¶ ...
The TSI Stereo PIV-PLIF system is designed to meet the research needs of anyone needing a fully integrated, turn-key system that provides global species measurements in mixing, materials processing, heat/mass transfer, and other three-dimensional measurement situations. The TSI Stereo PIV-PLIF system uses planar laser-induced fluorescence (PLIF) to provide global concentration measurement of the species of interest in the laser sheet region, and the particle image velocimetry (PIV) technique to obtain the velocity vector field.. The systems are composed of three integrated sub-systems: the Illumination Sub-system, the Imaging Sub-system, and the Display and Analysis Sub-system. The Illumination Sub-system includes a Nd:YAG or Nd:YLF laser, lenses, and beam delivery optics to get the light sheet where you need it. The Imaging Sub-system features two TSI PowerView Cameras with the right resolution, sensitivity, and speed required for your application. Cameras are available with pixel resolutions ...
Maximum Intensity Projection (MIP) consists of projecting the voxel with the highest attenuation value on every view throughout the volume onto a 2D image 1. Such an algorithm is rather simple: for each XY coordinate, only the pixel with the hig...
Current solutions for visualizing medical imaging are limited. Todays advanced medical imaging systems, such as CT and MRI, are capable of acquiring volumetric 3D image data, yet the images are presented in a 2D format. Even 3D volume renderings are displayed on a flat, 2D screen, further limiting a clinicians interpretation of the true structure of the underlying anatomy. True 3D (EchoPixel, Mountain View, CA), is an innovative medical visualization software platform that presents image data in an open, 3D space that provides the user with a holographic experience. It enables physicians to visualize and interact with image data depicting tissue and organs as if they were real, physical objects. As such, clinicians can interact with the image data, including rotating, segmenting, and applying cross sections from virtually any physical position. The platform is adaptable to clinicians across specialties, offering specialty-specific protocols for displaying imaging views to help improve workflow,
Magnetic resonance imaging (MRI) with magnetization tagging provides a non invasive tomographic imaging method for the evaluation of cardiac function. We h
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The 4D scans of 15 healthy fetuses, by Durham and Lancaster Universities, also suggest that yawning is a developmental process which could potentially give doctors another index of a fetus...
Tomos" is the Greek word for "cut" or "section", and tomography is a technique for digitally cutting a specimen open using X-rays to reveal its interior details. The Panoramic x-ray is an example of one such slice. It is the simplest form of tomogram in medicine, because it does not attempt to show any volumetric, or 3-D information. It produces a two dimensional image of a single slice along the mandibular arch.. The x-ray beam is fan shaped, with the fan "unfolded" in the vertical dimension. This beam is projected through a vertical slit close to the patient as the machine slowly revolves around his or her head. The beam and the x-ray cassette revolve around the patients head in the same direction (clockwise when viewed from the top), while the cassette itself translates in the opposite direction. The image produced shows the bony structures closest to the film cassette.. You might wonder how only the bony structures closest to the cassette are recorded. After all, the x-ray beam has to pass ...
Methods: A multicenter prospective observational study of nulliparous women recruited between 11 3/7 - 13 6/7 weeks (maternal characteristics; BMI; Mean arterial pressure (MAP); PAPP-A; placental growth factor (PIGF); UtA Doppler…) and followed until delivery. Delivery and neonatal data will be collected through chart reviews. Detection rates for early-onset PE (primary outcome) and other adverse pregnancy outcomes will be measured using the 11-13 weeks FMF screening test with and without UtA Doppler results. A case-cohort study will be performed using stored serum samples and three-dimensional ultrasound volume acquired at the 11-13 weeks visit.. Feasibility and power calculation: We estimate a minimum incidence of early-onset PE of 0.7%. A minimum of 7,600 women will be necessary to demonstrate that the FMF screening test is at least 80% sensitive and 90% specific where it is expected that it will be 95% sensitive and 92% specific. We will have the power to detect an absolute difference of ...
Units: umol/l. Method: spatial interpolation produced with DIVA (Data-Interpolating Variational Analysis). URL: http://modb.oce.ulg.ac.be/DIVA. Comment: Every year of the time dimension corresponds to a 10-year centred average for the autumn season (Sep-Nov). Diva settings: Snr=1.0, CL=0.7 ...
An apparatus for measuring parameters preparatory to a stent replacement of an aneurytic blood vessel in a patient (26) includes a computed tomography (CT) scanner (10) that acquires image data (28) corresponding to multiple two-dimensional image slices. A reconstruction processor (32) reconstructs a three-dimensional image representation (34) from the image data (28). A tracking processor (40) produces a tracked vessel (92) including at least a centerline (80) and selected vessel boundaries (86). A user interface (44) displays a rendering (242) of the image representation to an associated user (42), measures selected vascular parameters corresponding to the stent parameters (276), and graphically superimposes the measured parameters on the rendering of the image representation (270, 272).
Analyzing the Deformation of the Left Ventricle of the Heart with a Parametric Deformable Model. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
This article addresses the advances being made in the use of 3-dimensional image processing of computed tomographic (CT) scan data. With the evolution of 3D ...
Computer-aided image registration is an effective means of reducing interphasic hepatic image displacement and aids in the detection of lesions, according to a study published in the February edition of the American Journal of Roentgenology.
Utilizing the latest display technology, Kyoceras new 8.4-inch LCD features SVGA resolution, an integrated LED driver circuit, long-life LED backlighting with low power consumption, up to 70,000 hours of operating time, and a viewing angle of 170 degrees, which covers the needs of medical- and industrial-use applications.. For simple usage and installation, this module comes equipped with an integrated LED driver circuit, so that no external components are required to drive the backlighting. Also, the specially-designed LED backlighting provides lower power consumption by using the latest technology for LED chips and light guides. In addition, the LVDS interface guarantees easy and simple operability.. Combined with these features is the ability to provide consistent delivery and particularly long product availability, which distinguishes Kyocera as a reliable supplier.. The Kyocera Group is actively engaged in the development of environmentally friendly products and continually strives to ...
A non-invasive method that makes it possible to observe in situ how assemblies of lipids are oriented in biological tissues, and which does not require any labeling or preparation, has been developed by physicists from the ...
1Y3Y: A simple protocol to estimate differences in protein binding affinity for enantiomers without prior resolution of racemates.
Fig. 1. Example 3D view of 4 bundles of fibers in one of the participants: left lIFOF (red), left lAF/lSLF (cyan), AC-OL (green), AMB-PMC (yellow). Adopted from Mohades et al. (2012 ...
3NTE: Structure of the HIV-1 full-length capsid protein in a conformationally trapped unassembled state induced by small-molecule binding.
Welcome to this educational aid for teachers and students of biology or medicine!. It contains drawings, images and virtual reality worlds enhancing the understanding of biological structures.. You need Java running on yor computer in order to see the virtual reality worlds.. Note: In Contents panel (Sh) means Shout3D technique (Java required) while (Vr) means VRML technique (VRML plugin required) ...
Stereo Investigator with CSI allows you to gather data rapidly and with clarity to reduce visual bias caused by out-of-focus light. Using the built-in workflows in Stereo Investigator, you can acquire multi-channel confocal 3D image stacks at each of your systematic random sampling sites and then seamlessly use your image data on a Stereo Investigator workstation for offline analysis. The Structured Illumination Module works seamlessly with Stereo Investigator to provide you with a turn-key solution for confocal stereology. Stereo Investigator with the Structured Illumination Module can work unattended, even overnight, so you can acquire multi-channel 3D image stack series or acquire multi-channel 2D and 3D image montages (using the Virtual Slice module) without needing to be at the microscope.. ...
Top panel: comparison of the normalized volume within the LV physical model, as a function of the cardiac cycle, obtained using volume reconstruction from stere
Scientists from EPFL and Nestlé have developed a new method that can see inside dispersed cubosomes (dispersed cubic liquid crystalline phases) with unprecedented detail. The breakthrough can help to improve their design significantly for better drug or nutrient delivery.
Lowering production costs and enhancing the manufacturing process are just two of the many things that 3D Digital Corp can help your business accomplish. Our practical and down to earth services and products are a great way to help speed up various processes in your manufacturing applications. Contact us today to learn more about our Optix line of 3D scanners and how we can help you be more productive.. ...
Cardiac mapping is a technique in which the information from cardiac electrograms is gathered and displayed. Cardiac mapping is used to diagnose the heart
Prepare yourself.... The last remaining plant cell in existence is dying. An expert team of plant scientists have inexplicably disappeared. Can you rescue the lost team, discover what is killing the plant, and save the world? Meta!Blast is a real-time 3D action-adventure game that puts you in the pilots seat. Shrink down to microscopic size and explore the vivid, dynamic world of a soybean plant cell spinning out of control. Interact with numerous characters, fight off plant pathogens, and discover how important plants are to the survival of the human race.. Whats in a cell?. The eukaryotic cell is comprised of a dizzying array of molecules, proteins, and organelles. To understand the nature of these entities and their processes across both time and space can be a daunting task. The goal of Meta!Blast is to provide a medium--a dynamic virtual cell--that lends itself to the comprehension of cell and metabolic biology. Of course, building and populating an accurate 3D representation of a plant ...
... s in the assessment of intracranial bleeding and its consequences when examined
On the left, a snapshot of the simulation of a tumor developing in an epithelial duct (3D view on top right) and a 2D view of a transversal slice of the model showing the PH, oxygen and glucose concentration gradients. In the 3D view, red dots are blood vessels, gray represent the basement membrane, pink are healthy epithelial cells and the others are tumoral cells with different phenotypes. On the right, histology of DCIS shows the expansion of tumor cells within the duct (from Gatenby and Gilles, 2004). ...
Article Delphin Offers New ProfiMessage D Data Acquisition System. Measurement Data Acquisition, Monitoring & Automation CAS Dataloggers is pleased to ...
The purpose of the VMIS is to allow manufacturers the luxury of testing and perfecting manufacturing plans long before a single machine tool is turned on and resources are committed. The VMIS will allow the user to select an available machine tool and an available inspection device, specify a proposed inspection plan and a dimensional analysis procedure, and then build and inspect hundreds (or ev .... ...
Good introduction to the MAR & Orders; the roles of the physician, pharmacist, & nursing staff in medication administration; and the use of dimensional analysis for medication dosing. The tutorial takes about 45 minutes to complete. I hope to be able to continue to improve and expand the tutorial. Probable next steps: add additional MAR formats, include IV push medications using a syringe which users can manipulate to draw up the correct dose, include IV fluids both continuous infusions and...
This study introduces a technique of 3-D imageregistration of MRI and DTI modalities, towards thedevelopment of a 3-D visual interface integratingMagnetic Resonance Imaging (MRI) to Diffusion TensorImaging (DTI).
The underside line is: Why just take an opportunity with all your babys well being with the sake of the video? Fetal memento films are viewed as a dilemma due to the fact theres no clinical advantage derived with the publicity. More, there is not any Handle on just how long only one imaging session will acquire or how many sessions will arise. FDA is mindful of business people that are commercializing ultrasonic imaging of fetuses by creating keepsake video clips. Occasionally, the ultrasound equipment may be used for as long as an hour to get a video from the fetus.[9 ...
History 30 years old male during high-dose chemotherapy with cytarabine for hematologic malignancy. Imaging findings A PET-CT scan was performed for staging. Images A and C (minimum intensity projections in lung window) show diffuse intramural gas in the right hemicolon as well as gas in the pericolonic fat. Image B is a slabbed volume rendering…
An accurate description of anatomies and dynamics of vessels is crucial to understand their characteristics and improve surgical techniques, thus it is the basis, in addition to surgeon experience, on which stent design and operation procedures rely. The process of producing this description is user intensive, and recent improvement in image processing of medical3D imaging allows for a more automated workflow. However, there is a need to bridge the gap from a processed geometry to a robust mathematical computational grid. By sequentially segmenting a tubular anatomic structure, here defined by a stereo lithographic (STL) surface, an initial centerline is formed by connecting centroids of orthogonal cross-sectional contours along the length of the structure. Relying on the initial centerline, a set of non-overlapping 2D cross sectional contours are defined along the centerline, a centerline which is updated after the 2D contours are produced. After a second iteration of producing 2D contours and updating
Retinal degenerative conditions can vary in their clinical features and often present with subtle phenotypic features before the onset of clinically overt disease
FIB-SEMs for 3D analysis and sample preparation that speed up ion beam milling or material removal for tomography and deliver high resolution imaging.
In most cases, modern microscopy in biology is characterized by a large number of dimensions that fits perfectly with the complexity of biological features: two or three spatial dimensions, at macro to nano-scales, and one temporal dimension, sometimes spectrally defined and often corresponding to one particular bio- molecular species. Dynamic microscopy is also characterized by the nature of the observable objects (cells, organelles, single molecules, …), by the large number of small size and mobile elements (chromosomes, vesicles, …), by the complexity of the dynamic processes involving many entities or group of entities sometimes interacting, by particular phenomena of coalescence often linked to image resolution problems, finally by the association, dissociation, recomposition or constitution of those entities (such as membrane fusion and budding). Thus, the corpus of data to be considered for a comparative analysis of multiple image series acquisitions is massive (up to few GigaBytes ...
Techniques based on imaging serial sections of brain tissue provide insight into brain structure and function. However, to compare or combine them with results from three dimensional imaging methods,
Visualizations === * [[Define the term visualization]] * [[Two-dimensional use of visualization]] * [[Memory needs of 2D visualization]] * [[Three-dimensional use of visualization]] * [[Images in memory and the 3D visualization]] * [[Time and memory considerations of 3D animation ...
The full three-dimensional (3D) approach is now becoming an important issue for all magnetic confinement configurations. It is a necessary condition for the stellarator but also the tokamak and the reversed field pinch (RFP) now cannot be completely described in an axisymmetric framework. For the RFP the observation of self-sustained helical configurations with improved plasma performances require a better description in order to assess a new view on this configuration. In this new framework plasma configuration studies for RFX-mod have been considered both with tools developed for the RFP as well as considering codes originally developed for the stellarator and adapted to the RFP. These helical states are reached through a transition to a very low/reversed shear configuration leading to internal electron transport barriers. These states are interrupted by MHD reconnection events and the large Te gradients at the barriers indicate that both current and pressure driven modes are to be considered. ...
Eizo T1721 (17, 1280x1024) - Case colour: Black, Screen size (inches): 17 , Screen size (cm): 43.20 cm, Image resolution: 1280x1024, Aspect ratio: 5:4, Screen technology: TN, Screen surface: Anti-glare, Contrast ratio: 1000:1, Response time (grey-to-grey): 5 ms, Brightness: 200 cd/m², Colour depth: 24 bit, Viewing angle (H): 160 °, Viewing angle (V): 160 °, Pixel pitch: 0.26 mm, Touch: Multi-Touch, Height-adjustable: Yes, Pivot function: Yes, VESA Flat Display Mounting Interface: 75 x 75 mm, 100 x 100 mm, DVI-I: 1 x, DVI-D: 1 x, VGA: 1 x, Power consumption (standby): 34 W, Input voltage: V, Width: 335 mm, Length: 335 mm, Weight: 5.20 kg - Monitors, LCD, LC Display, TFT Display
Every day, roughly 100 billion new cells are created inside the human body. These cells join trillions of older cells to form the tissues and organs we rely on to stay alive. Sometimes when a cell is created, a mutation occurs within its DNA, transforming the cell into something defective and potentially dangerous to the bodys internal environment. Usually, a cell will recognize its own defects and quickly terminate itself.
Hossein Tavana has been awarded a two-year National Institutes of Health grant to support his efforts to advance the testing and effectiveness of anticancer drugs.
John Moen is a cartographer who along with his wife are the orignal founders of worldatlas.com. He and his wife, Chris Woolwine-Moen, produced thousands of award-winning maps that are used all over the world and content that aids students, teachers, travelers and parents with their geography and map questions. Today, its one of the most popular educational sites on the web ...
If you are pregnant, your obstetrician will surely do a 4d Ultrasounds scanning of your womb. Do you have any idea what this scanning is all about?
So I had my 3D-4D ultrasound today (28 weeks) and something about my babies nose seemed super odd . I dont know what to think . My mom had said possibly...
Benoit M. Dawant, S. L. Hartmann, Jean-Philippe Thirion, Frederik Maes, Dirk Vandermeulen, P. Demaerel: Automatic 3D Segmentation of Internal Structures on the Head in MR Images Using a Combination of Similarity and Free Form Transormations: Part I, Metholody and Validation on Normal Subjects. IEEE Trans. Med. Imaging 18(10): 909-916 (1999 ...
The |i|Journal of Electronic Imaging|/i| (JEI), copublished bimonthly with the Society for Imaging Science and Technology, publishes peer-reviewed papers that cover research and applications in all areas of electronic imaging science and technology.