• The real breakthrough occurred when computed tomography (CT) and magnetic resonance imaging (MRI) devices could generate highly accurate images of internal organs in three dimensions and in digital format. (wikipedia.org)
  • The aim of this challenge is to determine the accuracy of registration algorithms, using an anthropomorphic digital phantom, in registering unenhanced and enhanced computed tomography (CT) chest images. (grand-challenge.org)
  • The image data typically acquired in radiation therapy are the initial computed tomography (CT) images needed for treatment planning, the in-room cone-beam computed tomography (CBCT) images acquired with an X-ray imager mounted at the treatment device and the pre-treatment magnetic resonance (MR) images. (lmu-klinikum.de)
  • To generate the necessary data to inform such decisions, Dr. Lee has been developing the National Cancer Institute dosimetry system for Computed Tomography (NCICT) , based on Monte Carlo simulation combined with computational human phantoms. (nih.gov)
  • Diagnostic tools include computed tomography (CT scan) and magnetic resonance imaging (MRI). (anatomywarehouse.com)
  • CT scans give the human body a large dose of ionizing radiation - something the computational phantom was designed to circumvent in the first place. (wikipedia.org)
  • Computational Human Phantoms There are two broad approaches to determine organ doses to portions of the human body exposed to ionizing radiation: measurement and calculation. (nih.gov)
  • I focus on training residents in the physics of different dosimeters and imaging techniques. (wisc.edu)
  • She serves as a mentor for the medical physics residency program, training residents in the physics of different dosimeters and imaging techniques. (wisc.edu)
  • The phantom accommodates point, 2D and 3D dosimeters, as well as CT/MR imaging QA kits. (rt-safe.com)
  • To validate the organ dose calculated from NCICT he compared it with data collected from experiments using physical anthropomorphic phantoms and radiation dosimeters. (nih.gov)
  • It is the first anthropomorphic phantom representing a hermaphrodite adult for internal dosimetry. (wikipedia.org)
  • CAM (Computerized Anatomical Man) phantom developed by NASA unknown by the mainstream radiation protection dosimetry community, etc. (wikipedia.org)
  • This collaborative project is a continuation of work initiated at the Department of Medical Physics of the Faculty of Physics of the LMU Munich, which has an established collaboration with the phantom manufacturer RTsafe, and where gel dosimetry was proved valuable to establish proton range in 3D. (lmu-klinikum.de)
  • EASY CUBE is a water-equivalent phantom for the widest variety of quality assurance tasks: commissioning, dosimetry, machine QA, and patient treatment plan QA. (cablon.nl)
  • The report was prepared by the Society of Nuclear Medicine and Molecular Imaging AI Task Force Evaluation team, which consisted of nuclear-medicine physicians, physicists, computational imaging scientists, and representatives from industry and regulatory agencies. (snmjournals.org)
  • Computational human phantoms are models of the human body used in computerized analysis. (wikipedia.org)
  • The very first generation computational phantoms were developed to address the need to better assess organ doses from internally deposited radioactive materials in workers and patients. (wikipedia.org)
  • In general, stylized computational phantom is a mathematical representation of the human body which, when coupled with a Monte Carlo radiation transport computer code, can be used to track the radiation interactions and energy deposition in the body. (wikipedia.org)
  • The feature of stylized computational phantom is finely tuned by adjusting individual parameters of the mathematical equations, which describes the volume, position, and shape of individual organs. (wikipedia.org)
  • Stylized computational phantom has a long history of development through the 1960s to 1980s. (wikipedia.org)
  • The team at Duke University has honed their expertise in computational modeling and studying human tolerance of radiation dosage from medical imaging and now has further purposed this expertise towards analysis and study for the space program. (nih.gov)
  • Duke University's CVIT lab generates computational patient models that are realistic, dynamic, and diverse. (nih.gov)
  • Likewise, intensity-based methods may not be desirable due to computational expense or the unavailability of suitable intensity images. (biomedcentral.com)
  • Alternatively, organ doses can be calculated using a computer simulation of the human body (called a computational human phantom) and radiation exposure scenarios combined with Monte Carlo radiation transport techniques. (nih.gov)
  • Dr. Lee has developed a series of computational human phantoms that are crucial for realistic, individualized dose reconstruction. (nih.gov)
  • To estimate more accurate doses, Dr. Lee, in collaboration with the University of Florida, has expanded the computational phantoms include non-reference body sizes utilizing a library of body dimensions representative of the U.S. population. (nih.gov)
  • Dr. Lee initiated a research consortium with several universities and clinical centers to develop new dose reconstruction methods for external x-ray radiotherapy using Monte Carlo simulation of radiotherapy machines coupled with his computational human phantoms. (nih.gov)
  • This study aimed to design and fabricate task-specific anthropomorphic breast phantoms and make an initial assessment of their utility for breast ultrasound (US) image quality optimization. (aapm.org)
  • The optimal attenuation coefficient was based on the visual assessment of the profile curve, coefficient of variation (CV) [%], and summed difference from the reference activity of the pool phantom. (ac.ir)
  • The optimal Butterworth filter for the 3D-brain phantom was also determined based on a visual assessment. (ac.ir)
  • The goal of this report is to provide best practices to evaluate AI algorithms developed for different parts of the imaging pipeline ranging from image acquisition to postprocessing to clinical decision making in the context of nuclear medicine. (snmjournals.org)
  • Evaluation has a well-established and essential role in the translation of any imaging technology but is even more critical for AI algorithms due to their working principles. (snmjournals.org)
  • Phantoms such as the Shepp-Logan Phantom were used as models of a human head in the development and testing of image reconstruction algorithms. (wikipedia.org)
  • A series of Monte Carlo experiments was conducted with digital breast phantoms and embedded synthetic lesions to produce realistic dual-energy images of both lesion types. (nih.gov)
  • We considered such factors as nonuniform anthropomorphic background, size of the mass, breast compression thickness, and variability in lesion x-ray attenuation. (nih.gov)
  • lesions and were found to be suitable for assessing image optimization through identification of individual lesion features. (aapm.org)
  • RTsafe , a medical technology company focused on improving the safety and accuracy of radiotherapy, today announced PseudoPatient™ Prime , a new head phantom that broadens the spectrum of quality assurance in brain radiotherapy through an integrated solution. (rt-safe.com)
  • Webinar - Use of the RTsafe customized Spine anthropomorphic phantom during Stereotactic Body Radiation Therapy (SBRT) of spinal metastases implementation. (rt-safe.com)
  • We studied the effect of using individually optimized image-reconstruction windows on image quality and measurement reproducibility in coronary artery calcium scoring using ECG-gated multidetector CT (MDCT). (medscape.com)
  • Per scan, three sets of images were reconstructed, respectively, at an image-reconstruction window of 40%, 50%, and 60% of the R-R interval. (medscape.com)
  • Image quality was assessed, and the optimal image-reconstruction window per scan and per coronary territory was determined. (medscape.com)
  • The interscan variability of calcium mass measurements was calculated for different strategies (use of fixed image-reconstruction window [40%, 50%, or 60%] versus individually optimized image-reconstruction window). (medscape.com)
  • Even with individually optimized image-reconstruction window values, we obtained high values for interscan variability (mean ± SD, 27% ± 22% vs 31% ± 35% with a fixed image-reconstruction window). (medscape.com)
  • The use of individually optimized image-reconstruction windows leads to a significant improvement in image quality. (medscape.com)
  • Objective(s): The purpose of this study was to examine the optimal reconstruction parameters for brain dopamine transporter SPECT images obtained with a fan beam collimator and compare the results with those obtained by using parallel-hole collimators. (ac.ir)
  • A pool phantom and a three-dimensional (3D) brain phantom were filled with 123I solution to examine the reconstruction parameters. (ac.ir)
  • The phantom also provides realistic bone and soft tissue contrast in MR and CT imaging. (rt-safe.com)
  • 14. Quantitative evaluation of PSMA PET imaging using a realistic anthropomorphic phantom and shell-less radioactive epoxy lesions. (nih.gov)
  • Based on these specifications, five phantoms were constructed from agar and polyvinyl-alcohol-based TMMs which included the different breast tissue types and between 6 and 13 lesions with the specified anthropomorphic and acoustic characteristics. (aapm.org)
  • The initial evaluation of these phantoms by a breast radiologist found very good clinical resemblance of between 60â€"92% of the ‘must-see’ lesions. (aapm.org)
  • My clinical focus is on brachytherapy and imaging for radiation therapy, specifically CT simulation. (wisc.edu)
  • Dr. Jessica Miller focuses on brachytherapy and imaging for radiation therapy, specifically CT simulation. (wisc.edu)
  • This CAE Blue Phantom model is a realistic simulation of a female lower torso with an 18-week fetus for practicing ultrasound-guided amniocentesis procedures. (anatomywarehouse.com)
  • Can Anthropomorphic Breast Ultrasound Phantoms Improve the Learning Experience of Radiology Residents Enrolled in a Resident Education Program? (aapm.org)
  • At present, there are no suitably complex phantoms commercially available for image quality optimization and ultrasound scanner selection for specific clinical applications such as breast ultrasound imaging. (aapm.org)
  • Such task-specific phantoms are important as they can enable an objective evaluation of image optimization of ultrasound systems using targets mimicking clinically-relevant pathology within tissue mimicking material (TMM). (aapm.org)
  • Imaging Solutions Introduces EcoVue Ultrasound Gel and Warmers to Deliver Exceptional Glide and Image Quality with Less Mess and Waste. (imagingsol.asia)
  • This CAE Blue Phantom male pelvis model offers learners an excellent training platform for teaching and learning how to perform scrotal ultrasound procedures. (anatomywarehouse.com)
  • The newest models are based on more advanced mathematics, such as non-uniform rational B-spline (NURBS) and polygon meshes, which allow for 4-D phantoms where simulations can take place not only 3-dimensional space but in time as well. (wikipedia.org)
  • With such a variety of phantoms, many kinds of simulations can be run, from dose received from medical imaging procedures to nuclear medicine. (wikipedia.org)
  • Realistic finite element simulations of breast compression and further testing against a tissue-mimicking phantom demonstrate that this method is capable of registering surfaces experiencing 6 - 36 mm compression to within a mean error of 0.5 - 5.7 mm. (biomedcentral.com)
  • The mannequins are part of a project aided by a team of Duke University bioengineers with support from the National Institute of Biomedical Imaging and Bioengineering (NIBIB). (nih.gov)
  • 6. The Effect of Various β Values on Image Quality and Semiquantitative Measurements in 68Ga-RM2 and 68Ga-PSMA-11 PET/MRI Images Reconstructed With a Block Sequential Regularized Expectation Maximization Algorithm. (nih.gov)
  • Usually these verifications are performed as point or planar dose measurements in phantoms with simplified geometrical shapes. (lmu-klinikum.de)
  • Researchers conducted some radiation exposure experiments with a male phantom previously aboard the International Space Station. (nih.gov)
  • ACR accredited Medium MRI phantom for comprehensive evaluation of critical imaging parameters of magnetic resonance imaging (MRI) in a time efficient manner. (standardimaging.com)
  • The registration algorithm was validated by taking clinical dynamic contrast enhanced MR images, deforming them using a biomechanical FEM model and then calculating a TRE. (biomedcentral.com)
  • His pediatric series of phantoms has been adopted by the ICRP as the international reference model. (nih.gov)
  • Feature-based methods use only the geometric information extracted from an image, such as a polygonal mesh constructed from a segmented image. (biomedcentral.com)
  • In contrast, intensity-based methods utilize the intensities in the image volume, sometimes in addition to the geometric information, to register two images. (biomedcentral.com)
  • Therefore, in an attempt to balance the best attributes of these classes of methods, we present a semi-automated method that does not rely on either control points or explicit knowledge of the internal image intensity pattern. (biomedcentral.com)
  • 10. Impact of different image reconstructions on PET quantification in non-small cell lung cancer: a comparison of adenocarcinoma and squamous cell carcinoma. (nih.gov)
  • These plans are then irradiated on different gel inserts in the same 3D printed head to evaluate differences in the dose distributions originating from the differences in the image sets used for planning. (lmu-klinikum.de)
  • The representation of internal organs in this mathematical phantom was crude, by capturing only the most general description of the position and geometry of each organ. (wikipedia.org)
  • The geometry should be identical to subtract the two images from each other. (grand-challenge.org)
  • A more realistic approach are 3D printed heads, based on the geometry of a patient, as seen on a CT scan. (lmu-klinikum.de)
  • The difference will be that at the moment the images only have noise from a water phantom CT scan, while in future (approximately within a few months) we will obtain images that are CT simulated, which includes realistic noise/streak artifacts. (grand-challenge.org)
  • This new series of extremely realistic moulages show typical injuries. (imagingsol.asia)
  • These portable, lightweight, heart block models offer an extremely realistic echocardiography training platform and are available in transparent and flesh-tone configurations. (anatomywarehouse.com)
  • This novel surface-based method, which does not require intensity images, anatomical landmarks, or fiducials, is compared to a gold standard of thin-plate spline (TPS) interpolation. (biomedcentral.com)
  • Each phantom is embedded with over a thousand radiation sensors that will collect readings for precise organ locations, according to Duke University's Center for Virtual Imaging Trials (CVIT) Director Ehsan Samei, Ph.D., Duke University Reed and Martha Rice Distinguished Professor of Radiology, Medical Physics, Biomedical Engineering, Physics, and Electrical and Computer Engineering. (nih.gov)
  • He added that this experiment uses female phantoms because the female anatomy is more sensitive to radiation exposure than the male anatomy and exposure estimates for male astronaut radiation exposure can draw from female phantom data. (nih.gov)
  • The mannequins, physical phantoms, were manufactured by a commercial supplier and designed originally for use in medical imaging testing or radiologic practice. (nih.gov)
  • With an unenhanced and enhanced CT scan an temporal subtraction CT imaging can be obtained. (grand-challenge.org)
  • The phantom is based on an actual patient's CT scan. (rt-safe.com)
  • 15. Artificial intelligence for detecting small FDG-positive lung nodules in digital PET/CT: impact of image reconstructions on diagnostic performance. (nih.gov)
  • In this summer of state-of-the-art digital ogres, pterodons, and outer-space phantoms, Planet of the Apes arrives to show us what they can do these days with makeup and wires. (decentfilms.com)
  • Images of a pancreatic tumor including, A) an MR image B) a single-energy equivalent CT image C-D) DECT images which help to differentiate healthy pancreatic tissue from tumor. (wisc.edu)
  • This means that the phantom reacts to radiation in the same way as human tissue does. (rt-safe.com)
  • However, scientists attempted to model individual organs of the body and ultimately the entire human body in a realistic manner, the efforts of which led to stylized anthropomorphic phantoms that resemble the human anatomy. (wikipedia.org)
  • These phantoms are particularly important as they represent human anatomy and thus the impact of imaging in a most relevant way," said Behrouz Shabestari, Ph.D., NIBIB Director of the National Technology Centers Program and Acting Director of the Division of Health Informatics Technologies. (nih.gov)
  • Each phantom is a representation of the female anatomy. (nih.gov)
  • This brand new lung phantom is intended for training various possibilities of lung anatomy and pathology. (cablon.nl)
  • The Department of Human Oncology has installed a novel single-source dual-energy CT system, called TwinBeam, with potential for liver and pancreas imaging. (wisc.edu)
  • SNM practice guideline for dopamine transporter imaging with 123 I-ioflupane SPECT 1.0. (ac.ir)
  • Because scanning the scrotum is usually not desirable to practice on colleagues or students, the scrotal phantom was developed. (cablon.nl)
  • BET Solutions is a Greek company that aims to bridge the gap between ex vivo studies and in vivo molecular imaging, by providing cost effective solutions in terms of instrumentation and services. (bioemtech.com)
  • Diverse anthropomorphic phantoms have been critical tools used to evaluate and fine tune medical scans from x-ray to CT. (nih.gov)
  • In this project (funded by the FöFoLe commission of the Medical Faculty of LMU Munich) three such heads are used to evaluate the influence of the underlying image data on the process of treatment plan generation. (lmu-klinikum.de)
  • Two major issues with development of the reference phantoms are difficulty in obtaining useful images and handling the large amount of data created from these images. (wikipedia.org)
  • Our study resolved to build a framework to bridge the gap between handheld and desktop solutions by developing an automated network protocol that wirelessly propagates application data and images prepared by a powerful workstation to handheld clients for storage, display and collaborative manipulation. (nih.gov)
  • PMID- 18002580 TI - Data processing tasks in wireless GI endoscopy: image-based capsule localization & navigation and video compression. (nih.gov)
  • Medical Data Management With Imaging Solutions the complicated puzzle of medical data management suddenly becomes simplistic with our comprehensive range of solutions that are flexible enough to solve almost any issue imaginable. (imagingsol.com.au)
  • Graduating from phantoms based on simple quadratic equations to voxelized phantoms, which were based on actual medical images of the human body, was a major step. (wikipedia.org)
  • In addition, intensity information may not be readily available for some applications such as near-infrared breast tomography, electrical impedance tomography, microwave tomography, or mechanical imaging. (biomedcentral.com)
  • Imaging Solutions is a healthcare imaging equipment products and consumables supplier. (imgsol.com)
  • Imaging Solutions is a specialist supplier of superior medical imaging and general healthcare products from the world's leading brands. (imagingsol.asia)
  • Spectral imaging (dual-energy or photon-counting mammography) has been shown to discriminate between cysts and solid masses with clinically acceptable accuracy. (nih.gov)
  • Design specifications for anthropomorphic breast phantoms were developed¹ through consultation with radiologists, breast US sonographers and medical physicists from a large radiology department. (aapm.org)
  • Verification of the entire treatment chain is possible with the universal phantom design. (cablon.nl)
  • Tumor delineation in the pancreas and liver can be a challenge using conventional CT images. (wisc.edu)
  • CVIT researchers have developed computation models of virtual humans for the past 19 years for medical imaging research. (nih.gov)
  • Imaging Solutions offers an extensive range of world-market-leading, first quality, high performance products which assist our customers in delivering outstanding radiographic diagnostic quality first time, every time. (imgsol.com)
  • Phantoms Imaging Solutions are proud to supply you with world-market-leading phantoms guaranteed to provide optimum quality assurance. (imagingsol.asia)
  • Phantoms have been developed for a wide variety of humans, from children to adolescents to adults, male and female, as well as pregnant women. (wikipedia.org)