Projection tomography x ray computed. Medical search. Frequent questions

Small animal micro computed tomography (µCT) is an important tool in cancer research and is used to quantify liver and lung tumors. (bvsalud.org)

The very expensive cone-beam computed tomography or CBCT created a 3D image of the entire skull as seen from all sides, including the whole jaw and all the teeth on it. (cdhp.org)
To create a patient's airway simulation, dental cone beam computed tomography (CBCT) scans are first taken. (sleepreviewmag.com)
Methods: Three oral radiologists examined 109 panoramic radiographs and cone-beam computed tomography (CBCT) images obtained from a digital archive. (bvsalud.org)
Cone beam computed tomography (CBCT) would potentially provide information needed for prosthetic treatment planning, implant selection, and/or surgical placement 13 . (bvsalud.org)

The database includes, but is not limited to, agents developed for positron emission tomography (PET), single photon emission computed tomography (SPECT), magnetic resonance imaging (MRI), ultrasound (US), computed tomography (CT), optical imaging, planar radiography, and planar gamma imaging. (freebookcentre.net)
This note introduces the physics, instrumentation, and signal processing methods used in X-ray (projection radiography), X-ray computed tomography, nuclear medicine (SPECT/PET), optical imaging, ultrasound imaging, and magnetic resonance imaging. (freebookcentre.net)
The principle is, to X-ray the object in different directions to get more information about the distribution of the absorption contrast than with radiography. (x-ray-optics.com)
Most drawbacks of single dental X-ray are similar to those of panoramic radiography. (bvsalud.org)
Recent radiologic literature regarding COVID-19 has primarily focused on Computed Tomography (CT) chest findings, with chest radiography lacking in comparison. (bvsalud.org)

This first article on tomography explains projections. (tomroelandts.com)
At the end of the second article on tomography , I left you with a very blurry reconstruction of the scanned object. (tomroelandts.com)

SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography , but uses isotopes with longer half-lives and resolution is lower. (lookformedical.com)
The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image. (lookformedical.com)
The compound is given by intravenous injection to do POSITRON-EMISSION TOMOGRAPHY for the assessment of cerebral and myocardial glucose metabolism in various physiological or pathological states including stroke and myocardial ischemia. (lookformedical.com)

This is the first of four articles on tomography (also read the second one , the third one , and the fourth one ). (tomroelandts.com)
The first three articles on tomography focused on analytic techniques, in which the reconstruction problem is attacked using mathematical analysis. (tomroelandts.com)

Cone-beam computed tomography (CT) is an emerging imaging technology. (stonybrook.edu)
Cone Beam Computed Tomography chapter covers machines, the imaging process, and typical clinical applications of cone-beam imaging, with examples of examinations made from scans. (hsbookstore.com)

When compared with the traditionally used filtered backprojection algorithm, the iteratively computed reconstructions, including the Gaussian models GBM and SGBM, provided smoother images with higher contrast. (tuni.fi)
These reconstructions have been computed using the filtered back-projection algorithm provided by the ASTRA Toolbox. (fips.fi)

Once the Fourier space of the image function is built up, an inverse Fourier transform could be performed to reconstruct tomographic images from the divergent beam projections. (elsevierpure.com)

In this paper, we describe how to make these computationally demanding algorithms feasible in connection with high-resolution, cone-beam x-ray computed tomography (micro-CT) for small animals. (iospress.com)
The general goal of this paper is to extend the parallel-beam projection-slice theorem to divergent fan-beam and cone-beam projections without rebinning the divergent fan-beam and cone-beam projections into parallel-beam projections directly. (elsevierpure.com)
Thus the established relations Eq. (27) and Eq. (29) between the Fourier space of the image object and the Fourier transforms of the backprojected data arrays can be viewed as a generalized projection-slice theorem for divergent fan-beam and cone-beam projections. (elsevierpure.com)
Chen, GH , Leng, S & Mistretta, CA 2005, ' A novel extension of the parallel-beam projection-slice theorem to divergent fan-beam and cone-beam projections ', Medical physics , vol. 32, no. 3, pp. 654-665. (elsevierpure.com)
Computed tomography modalities which use a cone or pyramid-shaped beam of radiation. (lookformedical.com)
Current cone-beam reconstruction algorithms mainly employ the Filtered-Backprojection (FBP) approach, which has difficulties when the projection set is limited. (stonybrook.edu)
Furthermore, it also applies, for the first time, algebraic methods in the context of general low-contrast cone-beam tomography. (stonybrook.edu)

Torben Jensen, researcher at the Niels-Bohr-Institute and lead author of the article, explains: "We developed an image reconstruction algorithm that generates a high-resolution, three-dimensional image of the sample using typically several hundred thousand x-ray scattering patterns. (mytum.de)
This algorithm takes into account not only classical X-ray absorption, but also the scattering signature of X-rays that reflect the molecular structure. (mytum.de)
Tomography using x-ray transmission and a computer algorithm to reconstruct the image. (lookformedical.com)
If you are into computed tomography (CT) from the perspective of algorithm development, or if you want to do the reconstruction yourself instead of using a standard software package (e.g., the one that was included with your scanner), you cannot ignore the ASTRA Tomography Toolbox . (tomroelandts.com)
A new algorithm, the Weighted Distance Scheme, is proposed that optimally arranges the order in which the grid projections are performed. (stonybrook.edu)
An accurate and efficient projection algorithm is described that reduces the cost of ART considerably, almost to the cost of FBP. (stonybrook.edu)

Tomography using radioactive emissions from injected RADIONUCLIDES and computer ALGORITHMS to reconstruct an image. (lookformedical.com)
The next article shows that it is possible to actually reconstruct a tomographic image from (lots of) projections like this. (tomroelandts.com)
Here's a challenge for you: Reconstruct the given sinogram using the the ASTRA Tomography Toolbox that I introduced in the previous article . (tomroelandts.com)
This article shows that it is possible to reconstruct the inside of a person or object from (lots of) projections of that person or object. (tomroelandts.com)
Furthermore, it is shown that the new network is able to reconstruct images of higher quality than conventional reconstruction algorithms, such as the filtered back projection and iterative algorithms (SART, SIRT, CGLS), when sinograms with angular undersampling are used. (finden.co.uk)

However, the radiation dose involved in X-ray CT scans constitutes a potential health concern to the human body, since it may induce genetic, cancerous, and other diseases. (atlantis-press.com)
3D statistical image reconstruction methods have the potential to significantly improve image quality and reduce patient X-ray dose in medical computed tomography (CT) scans. (umich.edu)
µCT scans acquire projections from different angles of the gantry which rotates X-ray source and detector around the animal. (bvsalud.org)

The high-performance ROFEX ( RO ssendorf F ast E lectron beam X -ray tomography)imaging technique has been developed at Helmholtz-Zentrum Dresden-Rossendorf for the noninvasive investigation of dynamic processes. (hzdr.de)
X-ray tomography is capable of imaging the interior of objects in three dimensions non-invasively, with applications in biomedical imaging, materials science, electronic inspection, and other fields. (sandia.gov)
The advantages of using a physics-assisted learned prior in X-ray tomography may further enable low-photon nanoscale imaging. (sandia.gov)
The Journal of X-Ray Science and Technology is an international journal designed for the diverse community (biomedical, industrial and academic) of users and developers of novel x-ray imaging techniques. (iospress.com)
Areas such as x-ray microlithography, x-ray astronomy and medical x-ray imaging as well as new technologies arising from fields traditionally considered unrelated to x rays (semiconductor processing, accelerator technology, ionizing and non-ionizing medical diagnostic and therapeutic modalities, etc.) present opportunities for research that can meet new challenges as they arise. (iospress.com)
Examples from magnetic resonance imaging (MRI), X-ray computed tomography (CT), and magnetic particle imaging (MPI). (bilkent.edu.tr)
This imaging procedure provides us valuable information that are not provided by standard 2-dimensional x-ray projections. (sleepreviewmag.com)
Correcting organ motion artifacts in x-ray CT medical imaging systems by adaptive processing. (nih.gov)
The approach in this paper uses a spatial overlap correlator scheme to accurately track organ motion in computed tomography imaging systems. (nih.gov)
Synthetic data tests demonstrate the validity of this approach and show that hardware modifications are essential for its implementation in x-ray CT medical imaging systems. (nih.gov)
Imaging the heart is an important application of tomography and other techniques in medical imaging. (tomroelandts.com)
3] K. Mueller , R. Yagel, and J.F. Cornhill, "The weighted distance scheme: a globally optimizing projection ordering method for the Algebraic Reconstruction Technique (ART)," IEEE Transactions on Medical Imaging, vol. 16, no. 2, pp. 223-230, April 1997. (stonybrook.edu)
Updated Digital Imaging chapter expands coverage of PSP plates and its use in cephalometric and panoramic imaging, examining the larger latitudes of photostimulable phosphor receptors and their linear response to the five orders of magnitude of x-ray exposure. (hsbookstore.com)
Recent advancements in X-ray sources and detectors have led to the collection of rapid time-resolved data from various positions within a sample or sample ensemble through time-resolved imaging/tomography experiments. (finden.co.uk)
The DICOM conformance statement is simply a diagram that demonstrates, for example, that a digital dental x-ray taken by a specific intraoral imaging product will be downloaded to another vendor's server and then displayed properly on another company's computer monitor. (medscape.com)
In addition, clinical indications involving the roots of teeth are mostly endodontic or related and require single dental X-ray as the best imaging modality with minimal radiation dose. (bvsalud.org)
Breast tomosynthesis (BT) is a form of tomographic imaging procedure, compute tomography adapted for breast diagnostics or simply put: 3D-mammography. (lu.se)
The CoSAXS beamline at the MAX IV Laboratory is a modern multi-purpose (coherent) small-Angle X-ray scattering (CoSAXS) instrument, designed to provide intense and optionally coherent illumination at the sample position, enabling coherent imaging and speckle contrast techniques. (lu.se)

The image quality of the 2D projections acquired by CT is fundamental for achieving a good reconstruction quality. (phddata.org)
Accurate simulation of X-ray transforms of representative objects plays an important role in the evaluation and improvement of CT reconstruction algorithms. (iospress.com)
Reconstruction from non-uniformly sampled data, projection data, regularly/randomly undersampled data. (bilkent.edu.tr)
I then pursued a postdoc at Johns Hopkins with Dr. Jeff Siewerdsen in Biomedical Engineering, developing reconstruction and registration methods for x-ray based image-guided surgery. (stanford.edu)
This study focuses on improving the reconstruction process of the brightfield optical projection tomography (OPT). (tuni.fi)
The second article switches to multiple projections, and shows a straightforward (but incorrect) attempt at reconstruction, which provides an initial (blurry) image. (tomroelandts.com)
So, to prepare X-ray images for tomographic reconstruction, take the ratio of photons that arrive at the detector and photons that were produced by the source, and take the negative logarithm of that. (tomroelandts.com)
Both the projections and the reconstruction area are divided into pixels, and a numerical approximation of the true mathematical technique is introduced. (tomroelandts.com)
This paper proposes a high-quality computed tomography (CT) image reconstruction method from low-dose X-ray projection data. (edu.sa)
It provides all projections needed for three-dimensional (3D) reconstruction in a single spin of the X- ray source-detector pair. (stonybrook.edu)
Algebraic reconstruction starts from an initial guess for the reconstructed object and then performs a sequence of iterative grid projections and correction backprojections until the reconstruction has converged. (stonybrook.edu)
8] K. Mueller , R. Yagel, and J.F. Cornhill, "Accelerating the anti-aliased Algebraic Reconstruction Technique (ART) by table-based voxel backward projection," Proceedings EMBS'95 (The Annual International Conference of the IEEE Engineering in Medicine and Biology Society) , pp. 579-580, 1995. (stonybrook.edu)
The image below shows a computer tomography 3D-reconstruction of 17 slices of a human head. (x-ray-optics.com)
Long conducts research in statistical image reconstruction for X-ray CT, medical image registration and their applications to radiotherapy. (umich.edu)

The network is tested with simulated data as well as experimental synchrotron X-ray micro-tomography and X-ray diffraction computed tomography data. (finden.co.uk)

Contrary to conventional tomography systems, the ROFEX systems do not achieve this by mechanical rotation of the object or source-detector-compound. (hzdr.de)
Let's follow an X-ray beam that hits a single detector pixel. (tomroelandts.com)
Either the sample is rotated between the X-ray source and the detector or (mostly in medical applications) the source-detector unit rotates around the sample. (x-ray-optics.com)
In the first generation systems one X-ray source and one detector are shifted synchronously perpendicular to the axis of rotation to take the data of one projection direction. (x-ray-optics.com)
Then source and detector are rotated a few degrees before shifting them for the data acquisition of the next projection direction. (x-ray-optics.com)
In the third generation systems one X-ray source and a ring segment detector array at the opposite side of the patient rotate synchronously around the patient to acquire the image data. (x-ray-optics.com)
The CT-image can be calculated from the absorption signals detected with the CCD-line array while the source and the detector circle around the head by a so called back projection. (x-ray-optics.com)
Users do not have to concern themselves with parameters such as projections, detector resolution, voxels and detailed technical correlations," explains Product Manager Emre Batur. (foundry-planet.com)
The CT system has a cadmium telluride (CdTe) detector, and a projection curve is obtained by linear scanning with use of the CdTe detector in conjunction with an X-stage. (elsevierpure.com)
Penetrating X-ray photons from the object are detected by the CdTe detector, and event signals of X-ray photons are produced with use of charge-sensitive and shaping amplifiers. (elsevierpure.com)

Such a scattering pattern is generated for every point in the sample and every angular projection. (mytum.de)
The key difference compared to normal computed tomography (CT) is however that breast tomosynthesis only uses a limited angular range (e.g. 50 degrees) instead of a full 180-degree range. (lu.se)
The x-ray tube moves over a limited angular range (e.g. 50 degrees) and acquires a number of projections. (lu.se)
There is no consensus on optimal values for dose, dose per projection, angular range and many other parameters. (lu.se)

The new development is based on conventional X-ray computed tomography (CT). (mytum.de)
This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography , where data is obtained and computed from individual sequential exposures. (lookformedical.com)

We applied X-ray computed microtomography (CT) to obtain high-resolution data ( Δ x =50 µ m) of the composition of a 164 cm long permafrost core drilled in a Yedoma upland in north-eastern Siberia. (copernicus.org)

Scanning X-ray diffraction (XRD) is compared with Bragg projection ptychography (BPP), a fast single-projection method. (lu.se)

The study is unique in that it investigates breast tomosynthesis as a stand-alone modality rather than in combination with standard mammography and in that it, to save dose and review time, uses only a single projection instead of the two that has been the standard for mammography. (lu.se)
This is very similar to the results of other similar studies using breast tomosynthesis in two projection together with mammography in two projections. (lu.se)

Projection Geometry 5. (hsbookstore.com)

OPT is often described as the optical equivalent of X-ray computed tomography, but based on visible light. (tuni.fi)

On their journey through the object, some of the X-ray photons are absorbed. (tomroelandts.com)
Demonstration of enhanced iodine K-edge X-ray CT was carried out by selection of photons with energies just beyond the iodine K-edge energy of 33.2 keV. (elsevierpure.com)
Gamma-ray photons emitted from the internal distributed radiopharmaceutical penetrate through the animal's or patient's body and are detected by a single or a set of collimated radiation detectors. (lu.se)
Direct flat-panel detectors (FPDs) convert x-ray photons directly into an electrical charge, which is read out by a thin film transistor array, active matrix array, electrometer probe, or microplasma line. (medscape.com)
X-ray tracing simulations used to design the beamline optics have predicted a total photon flux of 1012-1013 photons s-1 and a degree of coherence of up to 10% at 7.1 keV. (lu.se)

In SPECT, projection data are acquired from different views around the animal/patient. (lu.se)

When the plane or axis of the object depicted is not parallel to the projection plane, and where multiple sides of an object are visible in the same image, it is called an auxiliary view. (wikipedia.org)
those points of interest are mapped by an orthographic projection to points on some geometric plane (called a projection plane or image plane) that is perpendicular to the ray of sight, thereby creating a 2D representation of the 3D object. (wikipedia.org)
When these meeting points are joined in order on the plane they form an image, thus in the first angle projection, any view is so placed that it represents the side of the object away from it. (wikipedia.org)
From the data set of projections from one revolution of the electron beam a non-superimposed cross-sectional image of the attenuation distribution within the object can be reconstructed. (hzdr.de)
Prior to returning to Stanford in 2018, I was a Senior Scientist at Varian Medical Systems, developing x-ray/CT methods for image-guided radiation therapy. (stanford.edu)
The basic idea is to establish a novel link between the local Fourier transform of the projection data and the Fourier transform of the image object. (elsevierpure.com)
However, due to the loss of the shift invariance of the image object in a single view of the divergent-beam projections, the measured projection data is weighted by a distance dependent weight w(r) before the local Fourier transform is performed. (elsevierpure.com)
Computing is the secret sauce that is poured over the hundreds or thousands of X-ray photos that make up a CT scan, to merge them into a single image. (tomroelandts.com)
This means that photon absorption is an exponential process, and that a normal X-ray image is not a projection that is suitable for tomography. (tomroelandts.com)
Below is a (simulated) X-ray image of a box (a hollow cube) with a (solid) ball inside. (tomroelandts.com)
Again, this image is not suited for tomography, since it is not the sum of the intensity of the objects. (tomroelandts.com)
Below is the projection image that was computed from the X-ray image above. (tomroelandts.com)
The brightness in this image directly corresponds with the sum of the density of the objects, so this image is suitable for tomography. (tomroelandts.com)
From the entity of all these projections in different directions, each slice image can be calculated by Fourier-transformation. (x-ray-optics.com)
How is a CT image extracted from the detected X-ray absorption? (x-ray-optics.com)
Motion of the animal causes inconsistencies between the projections which lead to artifacts in the resulting image. (bvsalud.org)
Dealing with respiratory motion is particularly difficult in a high throughput setting when multiple mice are scanned together and projection removal by retrospective respiratory gating may compromise image quality and dose efficiency. (bvsalud.org)
A DICOM file contains a patient's x-ray image or series of images and other patient-related information (e.g., patient name, identification number, acquisition modality) as selected from a library of standardized terms. (medscape.com)
As a result, DICOM standards began to include definitions for image objects, with special categorization for intraoral projections and color photography. (medscape.com)
When these image detectors are stimulated by light following radiation exposure, they release the energy, and this light is then converted to rows and columns of pixels that represent the various x-ray intensities. (medscape.com)
The energy collected by x-ray exposure is then scanned by a laser diode, and the resulting excitable energy that is released is read by a digital image capture array charge-coupled device (CCD) and converted to display. (medscape.com)
Tomography involves taking images from different angles and combining the information in them to create an image volume where every slice can be individually reviewed. (lu.se)

Algebraic methods have reportedly a number of advantages over FBP, such as better noise tolerance and the better handling of sparse and non-uniformly distributed projection datasets. (stonybrook.edu)

Layerwise data will be compared to volumetric X-ray computed tomography data to check and validate obtained results. (nottingham.ac.uk)

Ultrafast X-ray computed tomography has been primarily developed for the non-invasive measurement of the phase distribution within two-phase flows in vertical pipes. (hzdr.de)
While the highly precise, purely CT systems Y.CT Precision and Y.CT Modular have been conceived more for specialists in the lab, and with its 'allround talent' Y.Multiplex is suited for both laboratory applications and production in its capacity as a fluoroscopy system with integrated computed tomography, the CT option for Y.MU2000-D is targeted primarily for newcomers to computed tomography. (foundry-planet.com)

Your dentist uses x-ray photography extensively for taking images of your teeth, gums, and other invisible oral structures and conditions for providing you appropriate dental treatment. (dcmag.co.uk)
X-ray CT scanners provide images of transverse cross sections of the human body from a large number of projections. (nih.gov)
X-ray computer tomography (CT) allows to create 3D-images of the inner structure of objects without opening them. (x-ray-optics.com)
It demonstrates the potential for accurately reconstructing images from sparsely-sampled sinograms, making it valuable for time-resolved experiments and reducing X-ray doses in medical CT. (finden.co.uk)

This extraoral X-ray shows the entirety of the patient's left or right skull profile, including the jaw and the teeth. (cdhp.org)

Computed tomography requires radiographic projections from different angles. (hzdr.de)
Compared with methods with less physics assisting in training, PGAN can reduce the photon requirement with limited projection angles to achieve a given error rate. (sandia.gov)

A method of computed tomography that uses radionuclides which emit a single photon of a given energy. (lookformedical.com)

[ 3 ] Future work is to include the development of guidelines for standardization of digital photographic structured displays for both intraoral and extraoral projections, the creation of templates for reports, the development of guidelines for presentation states including overlays used in dentistry, and surgical workflow issues within DICOM used in dental implantology. (medscape.com)

In principle it is nothing more than taking multiple X-ray pictures from various directions. (mytum.de)

The beam originates, at the other side of the object, from an X-ray source not produced by radioactive decay). (tomroelandts.com)

Tomography of walnuts( Video1 , Video2 ) and peperoni as examples for dynamic quality control of agricultural products. (hzdr.de)

The new aspect of our molecular X-Ray CT method", explains TUM researcher Dr. Martin Bech, "is that we do not only measure the overall beam intensity absorbed by the object, but also those parts of the X-ray beam that are deflected in different directions - 'scattered' in the language of physics. (mytum.de)

Types of spiral computed tomography technology in which multiple slices of data are acquired simultaneously improving the resolution over single slice acquisition technology. (lookformedical.com)

Computed tomography (CT) scanning has supplanted radiographs in evaluation of midfacial trauma. (medscape.com)
Estimating motion of tumors from a series of projection radiographs acquired during arc therapy using a reference CT volume has become a promising technique for targeting treatment. (umich.edu)
Also in the diagnosis and treatment plan for a dental implant 6 a positive correlation between the length of the projection roots on the maxillary sinus in panoramic radiographs and the amount of pneumatization after extraction was found. (bvsalud.org)

In the context of tomography, the term projection has a very specific meaning. (tomroelandts.com)

Multi-material components, which contain metal parts surrounded by plastic materials, are highly interesting for inspection using industrial 3D X-ray computed tomography (3DXCT). (tuwien.at)
B2B Portal: Yxlon International GmbH: Y.MU2000 X-ray inspection system from YXLON now with CT option, too! (foundry-planet.com)
With over 490 systems in operation on the market, Y.MU2000 is the most highly utilized universal X-ray inspection system worldwide. (foundry-planet.com)

Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. (lookformedical.com)

So, you can expect the average cost of a panoramic dental X-ray to be about $130 to $200 in most cases. (cdhp.org)

X-ray computed tomography (CT) has emerged as innovative measuring technique for dimensional metrology in industry over the last years. (phddata.org)

It introduces a fast incremental projection scheme and by caches projection computations for their reuse in the subsequent backprojection [2][4]. (stonybrook.edu)

Mathematically, tomography is based on the fact that the function values of a two-dimension functional $f(x,y)$ can be calculated from projections of that function. (tomroelandts.com)

In this project, we will use fringe projection and other in-process monitoring systems to achieve layerwise topography monitoring. (nottingham.ac.uk)

Up to six pictures of an object are produced (called primary views), with each projection plane parallel to one of the coordinate axes of the object. (wikipedia.org)
Multiview projections show the primary views of an object, each viewed in a direction parallel to one of the main coordinate axes. (wikipedia.org)

One of the dominant ways to reduce the dose level is to decrease the exposure level of each projection angle. (atlantis-press.com)

In order to determine axial velocities of structures within the object of investigation the ROFEX systems comprise a second tomography plane, which is driven intermittently to the first one, if required. (hzdr.de)
In the fourth generation systems the X-ray source rotates around the patient. (x-ray-optics.com)
In the fifth generation systems the X-ray source consists of a ring shaped target anode and several electron beams (marked green in fig. 4) directed to the target points, where X-rays are generated. (x-ray-optics.com)

Low-dose computed tomography (LDCT) is clinically desirable because it reduces the radiation dose to patients. (atlantis-press.com)

In this paper, we formulate the X-ray transform and 3D Radon transform for ellipsoids and tetrahedra, and verify the resulting formulas by numerical simulation. (iospress.com)
The X-ray projection in one direction is the so called Radon-transformed of the sample. (x-ray-optics.com)

Simple and straightforward intraoral X-ray which is used to show the entirety of individual teeth. (cdhp.org)
Similar to the above, this intraoral X-ray only shows individual teeth from the crown to the ends of the roots. (cdhp.org)
This common type of intraoral X-ray shows the entire mouth of the patient - both the upper and lower jaws together. (cdhp.org)
Intraoral x-rays- Intraoral x-ray photos are taken with the sensor placed inside the mouth against the tooth or teeth to be radiographed. (dcmag.co.uk)

An energy-discrimination K-edge X-ray computed tomography (CT) system is useful for increasing the contrast resolution of a target region by utilizing contrast media. (elsevierpure.com)

Furthermore, parameters characterizing the analyzed process, such as interfacial area of a turbulent gas-liquid flow, can be extracted from the gained data from both tomography planes. (hzdr.de)

Analytical, Diagnostic and Therapeutic Techniques and Equipment9

Phenomena and Processes1

Information Science1

Micro computed tomography1

CBCT4

Radiography5

Article on tomography2

Positron emission t3

Articles on tomography2

Beam computed2

Reconstructions2

Tomographic images1

Cone7

Algorithm6

Reconstruct5

Scans3

Imaging18

Reconstruction14

Synchrotron X-ray1

Detector10

Angular4

Conventional2

Microtomography1

Diffraction1

Tomosynthesis2

Geometry1

Optical1

Photons5

SPECT1

Image22

Algebraic1

Volumetric1

Primarily2

Images4

Patient's1

Angles2

Photon1

Extraoral1

Principle1

Radioactive1

Examples1

Explains1

Slices1

Radiographs3

Context1

Inspection3

Spiral1

Panoramic1

Dimensional metrology1

Backprojection1

Functional1

Fringe projection1

Coordinate2

Exposure1

Systems3

Radiation1

Radon2

Intraoral4

Contrast1

Planes1