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6778630 |
Method and system for reconstructing computed tomography images using redundant data
A method and system for reconstructing an x-ray image from a partial orbit through the use of a “virtual” fan angle. The virtual fan angle is determined based upon the range of angular...
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6775346 |
Conebeam computed tomography imaging
An image reconstruction method for reconstructing cone or wedge-beam computed tomography projection data includes re-binning ( 50 ) the projection data to associate projection data having the...
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6775349 |
System and method for scanning near-field optical tomography
A method for the reconstruction of a tomographic image of an object from measurements of scattering data resulting from probing waves. The scattering data is related to a forward scattering...
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6771732 |
Methods and apparatus for fast divergent beam tomography
A fast method for divergent-beam backprojection is proposed for generating an electronic image from a preprocessed divergent-beam sonogram, the sinogram being a collection of divergent beam...
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6768782 |
Iterative method for region-of-interest reconstruction
An imaging system is provided including a source generating an x-ray beam and a detector array receiving the x-ray beam and generating projection data corresponding to at least a scanned portion of...
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6765981 |
Computed tomography
A system and method of computed tomography is disclosed. The method includes acquiring at least one projection but less than all projections to be used in reconstruction of an unknown object and...
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6765982 |
Method of producing images from measured computer tomographic data
A method of producing images with different image characteristics from measured computer tomographic data, includes using a convolution of measured data with a first convolution core, designed to...
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6763081 |
Cone beam computed tomography imaging system and method providing efficient utilization of detector area
Improved image reconstruction methods for cone beam ROI (region of interest) imaging of long objects with an area detector using a two or more circular scans and a connecting line scan, wherein...
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6763322 |
Method for enhancement in screening throughput
The present invention provides methods and an apparatus for the rapid analysis of data from imaging, spectroscopic, scanning probe, or sensor methods. By application of mathematical transform...
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6760399 |
CT scanner for time-coherent large coverage
In a rotate rotate CT scanner a plurality of source-detector units are mounted on a gantry displaced from each other in the Z direction and the detector units are arranged to acquire data from...
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6760404 |
Radiation detector and X-ray CT apparatus
A radiation detector includes a plurality of detector modules detachably mounted on a detector base. Each of the detector modules has a plurality of element blocks permanently mounted on a module...
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6757354 |
Multi-view x-ray imaging of logs
A method and apparatus is disclosed for mapping the relevant material properties of a log, such as knot location and extent. The outer shape of the log under bark is also revealed using this...
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6757418 |
Method and system for automatic computed radiography (CR) image composition by white band detection and consistency rechecking
A method for automatic CR image composition includes the following steps for each image in a CR image pair. A vertical gradient image is projected onto a y-axis to obtain a y-axis projection. Edge...
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6754297 |
Apparatus and method for three-dimensional real-time imaging system
A computing device in a three-dimensional imaging system utilizes a plurality of distance readings and reference readings from the at least one subject sensor to determine a subject location and a...
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6754301 |
X-ray CT system, gantry apparatus and operation console
For the purpose of reducing exposure of a subject to unnecessary radiation by controlling the tube current according to the X-ray emitting direction with respect to a region to be examined in the...
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6754298 |
Method for statistically reconstructing images from a plurality of transmission measurements having energy diversity and image reconstructor apparatus utilizing the method
A method for statistically reconstructing images from a plurality of transmission measurements having energy diversity and image reconstructor apparatus utilizing the method are provided. A...
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6748044 |
Computer assisted analysis of tomographic mammography data
The present technique provides a method and system for generating tomographic mammography data and processing the data using a computer aided detection and diagnosis (CAD) algorithm. The CAD...
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6748043 |
Method and apparatus for stabilizing the measurement of CT numbers
An apparatus and method is provided for stabilizing CT number calculations by a CT system against fluctuations in the x-ray source voltage due to voltage source drift. A voltage reference level is...
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6748045 |
Measurement of wood/plant cell or composite material attributes with computer assisted tomography
A method for obtaining wood-cell attributes from cellulose containing samples includes the steps of radiating a cellulose containing sample with a beam of radiation. Radiation attenuation...
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6744846 |
Method and apparatus for automatic exposure control in CT scanning
In a computed tomography apparatus and a method for automatic exposure control in computed tomography scanning, an exposure controller, during a first half of a revolution of an X-ray focus around...
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6745066 |
Measurements with CT perfusion
A CT scanner ( 10 ) for obtaining a medical diagnostic image of a subject includes a stationary gantry ( 12 ), and a rotating gantry ( 14 ). The detected radiation is reconstructed and divided into...
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6741671 |
Computed tomography system with integrated analogic computer
An imaging system includes an x-ray source adapted to generate an x-ray flux. The system further includes an array of analogic computer modules, each of which contains an array of detector elements...
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6741672 |
K-space based graphic application development system for a medical imaging system
A sequence description defining the events for traversing k-space during a medical imaging scan is defined through a k-space graphical view, thereby providing an easy programming interface for MR...
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6735274 |
Clinical screening CT systems
A computerized tomographic imaging system ( 31 ) including a vertical movement arrangement ( 32, 35 ) for moving gantry of said system vertically while rotating about the object being imaged ( 44 )...
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6735271 |
Electron beam computed tomographic scanner system with helical or tilted target, collimator, and detector components to eliminate cone beam error and to scan continuously moving objects
A scanning electron beam computed tomographic system eliminates axial offset between target and detector by disposing the target, collimator, and detector such that active portions of the target...
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6735272 |
Method and system for a customized patient report in imaging systems
A method and system for associating medical imaging data with a customized patient report. The system includes a memory for storing a plurality of patient specific attributes and a plurality of...
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6731716 |
X-ray CT apparatus
An X-ray CT apparatus comprises a large number of X-ray sources, a detector, and a collimator. The X-ray sources are arranged around an object P of inspection. The detector detects X rays emitted...
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6728331 |
Method and system for trauma application of CT imaging
A method and system for generating a plurality of clinically useful images in a short time frame using a single imaging system. The system and method include using a single computer tomography (CT)...
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6728334 |
Automatic detection of pulmonary nodules on volumetric computed tomography images using a local density maximum algorithm
A three dimensional mask of the lungs can be automatically created by thresholding, labeling connected components, selecting the dominant object, and alternately employing dilation and erosion...
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6721387 |
Method of and system for reducing metal artifacts in images generated by x-ray scanning devices
A method of reducing metal artifacts in a computed tomography (CT) system includes: A. generating a preliminary image from input projection data collected by the CT system; B. identifying metal...
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6718003 |
Gantry of an X-ray computer tomography apparatus
A gantry of an X-ray computer tomography apparatus comprises a base, two main posts mounted on the base at right angles, a ring frame tiltably supported by the two main posts, a rotation ring...
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6706213 |
Phosphor, radiation detector containing the same, and X-ray CT apparatus
A novel phosphor represented by the general formula (Gd 1-y-z Ce y Sc z ) 3 Al 5-d Ga d O 12 (wherein y, z and d are values falling in the ranges of 0.0005≦y≦0.05, 0<z≦0.03 and...
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6707878 |
Generalized filtered back-projection reconstruction in digital tomosynthesis
There is provided a method of constructing a three dimensional (3D) image of an object from a plurality of two dimensional (2D) views of the object, comprising the steps of filtering the plurality...
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6707875 |
Nonintrusive inspection apparatus
An x-ray technique-based nonintrusive inspection apparatus is provided which is capable of inspecting 600 containers an hour which is small, and which is easily maintainable. Features of the...
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6704391 |
System and method of aligning scintillator crystalline structures for computed tomography imaging
The present invention discloses a method of aligning scintillator crystalline structures for computed tomography imaging and a system of use. Crystal seeds are deposited inside a glass melt and are...
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6700949 |
Retractable collimator apparatus for a CT-PET system
An apparatus for use with a combined CT-PET system wherein a CT source and detector are mounted to a front end of a CT support and the support forms a parking space about a translation axis, a PET...
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6701000 |
Solution to detector lag problem in a solid state detector
The present invention, in one form, includes a digital x-ray imaging system which, in one embodiment, collects projection data from a plurality of views and reduces artifacts caused by detector...
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6697508 |
Tomographic reconstruction of small objects using a priori knowledge
Three-dimensional (3D) reconstruction of a cell includes adjusting a current set of projection images according to a priori knowledge to produce adjusted projection images, for example, based on...
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6697451 |
Dynamic phantom and method for evaluating calcium scoring
A method of evaluating a substance scoring system comprises acquiring data from a phantom using an imaging system, moving at least a portion of the phantom during the acquiring step, and generating...
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6690762 |
N-dimensional data encoding of projected or reflected data
A system, method, and computer-readable medium formats imaging data associated with an object in an n-dimensional file format. Once two-dimensional imaging ray data (projected or reflected data) is...
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6687332 |
Method and apparatus for patient-in-place measurement and real-time control of beam-spot position and shape in a scanning electron beam computed tomographic system
A scanning electron beam computed tomographic system is provided with a sub-collimation system that passes X-rays emitted by a beam spot formed by an electron beam that is scanned across an X-ray...
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6687327 |
System and method of medical imaging having task and/or patient size dependent processing
A system and method of medical imaging is designed to reduce a patient's X-ray exposure during scanning based upon patient size and task dependency. The system includes receiving a task and patient...
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6683934 |
Dual energy x-ray imaging system and method for radiography and mammography
A digital x-ray imaging system employs a pixelated flat panel digital x-ray detector separated by a space from a source of x-rays which is selectively switchable between first and second, different...
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6683933 |
Three-dimensional image display device in network
A three-dimensional image processing system enables multiple users at distant locations employing ordinary personal computers to construct and observe three-dimensional images simultaneously. In a...
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6680995 |
Method and apparatus of determining and displaying a helical artifact index
An apparatus and process for determining and displaying a helical artifact index to a system operator are provided. The HAI is determined by acquiring and processing imaging data of a phantom. The...
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6678346 |
Cone-beam CT scanner with image reconstruction using multiple sub-images
A computed tomography imaging system includes a source of a conical beam of radiation and a two-dimensional detector array arranged on opposite sides of an axis of rotation. Projection data is...
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6674833 |
Virtual fluoroscopic system and method
A method and system for obtaining desired subsurface views of a patient target site are disclosed. The system includes a scan-data file for storing, in digital form, volumetric scan data of a...
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6670625 |
Method and apparatus for correcting multipole aberrations of an electron beam in an EBT scanner
A method and apparatus are disclosed for reducing variation in a spot size of an electron beam at a target due to multipole aberrations in an electron beam tomography (EBT) scanner. A magnitude of...
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6665369 |
Method for image reconstruction, software for image reconstruction, a recording medium therefor, and a radiographic apparatus
An X-ray tube (X-ray focus) and an X-ray detector opposed to each other across an object synchronously scan the object to acquire radiographic data in each scan position. The radiographic data or...
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6661865 |
Variable axial shielding for pet imaging
A diagnostic imaging system includes a rotating gantry ( 16 ) which defines a subject receiving aperture ( 18 ). A rotatable source of high energy penetrating radiation ( 20 ) and corresponding...
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