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7310403 |
Target reconstruction
A method for real-time target reconstruction from target image projections including dividing an object into external and internal sub-objects, acquiring external sub-object data, acquiring...
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7308297 |
Cardiac imaging system and method for quantification of desynchrony of ventricles for biventricular pacing
A method for quantifying cardiac desynchrony of the right and left ventricles includes obtaining cardiac acquisition data from a medical imaging system, and determining a movement profile from the...
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7308071 |
Methods, apparatus, and software for reconstructing an image
A method of reconstructing an image includes substantially minimizing a cost function of the form
x ^ = arg min x { ∑ m = 0 M D m ( y m , F m ( x ) ) + S ( x )...
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7303334 |
Radiation attenuation system
A radiation attenuation system for use with Computed Tomography procedures is disclosed. The system includes a shield made of a radiation attenuation material and may be useful in blocking or...
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7305061 |
Efficient image reconstruction algorithm for the circle and arc cone beam computer tomography
Methods, systems and processes for providing efficient, accurate and exact image reconstruction using portable and easy to use C-arm scanning devices and rotating gantries, and the like, that...
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7305062 |
X-ray system having a first and a second X-ray array
An X-ray system has two X-ray arrays each having an X-ray source and an X-ray detector. The X-ray arrays can be swiveled around a common swiveling axis within whose range an object is locatable....
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7302030 |
Method for determination of the position and/or orientation of three-dimensional structures of a patient with the aid of a computed tomography scanner
A method is for determination of at least one of the position and orientation of three-dimensional structures of a patient. One topographic scan of the patient is recorded simultaneously per tube...
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7298812 |
Image-based material decomposition
A CT scanner acquires CT images at different energy levels and registers those images to provide a composite image that is substantially free of beam hardening artifacts and conspicuously provides...
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7298877 |
Information fusion with Bayes networks in computer-aided detection systems
This invention provides an information fusion method for multiple indicators of cancers detected with multiple channels. Each channel consists of specifically tuned detectors, features, classifiers...
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7292717 |
Computer tomography method using redundant measured values
The invention relates to a computer tomography method in which a radiation source moves relative to an examination region along, in particular, a helical or circular trajectory. Measured values are...
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7289595 |
Computerized method and device for calculating an orthogonal x-ray attenuation of a subject using a measured, x-ray attenuation reference
In method and module for calculation of an orthogonal x-ray attenuation of a subject using a measured reference x-ray attenuation in computed tomography, the reference x-ray attenuation and the...
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7289596 |
Radiation tomography apparatus and scan condition setting device
The quality of an image can be improved and radiation can effectively be utilized. In an imaging area of a subject where a main scan is performed, a specific scan area setting unit sets a specific...
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7289033 |
Wireless sensing washers for imaging device attachment
A computed tomography assembly is provided comprising at least one clamped imaging component and a clamping fastener having a clamping head attached thereto. A load-sensing washer is positioned...
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7286629 |
Method for taking tomograms of a beating heart
A method is for taking tomograms of a patient's beating heart with the aid of a computed tomography unit. ECG signals of the beating heart are recorded. In order to reconstruct the cardiac...
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7286628 |
Phase-contrast enhanced computed tomography
A phase-contrast x-ray computed tomography scanner, a monochromatic diffraction computed tomography scanner, a rotatable monochromatic diffraction computed tomography scanner, and a combination...
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7283604 |
Method and system of CT data correction
An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector...
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7279120 |
Doped cadmium tungstate scintillator with improved radiation hardness
This invention provides novel cadmium tungstate scintillator materials that show improved radiation hardness. In particular, it was discovered that doping of cadmium tungstate (CdWO 4 ) with...
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7280670 |
Image confirming method
Quality of a plurality of images having a common characteristic is confirmed collectively and the images after the confirmation are transferred collectively. Images acquired by a reading apparatus...
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7280632 |
Exact filtered back projection (FBP) algorithm for spiral computer tomography with variable pitch
Reconstructing images of objects spirally scanned with two-dimensional detectors with a novel algorithm under a variable pitch (nonconstant speed), where the object is not restricted to moving at a...
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7278786 |
Method and apparatus for triggering image acquisition in a C-arm system by a rotary encoder
Method of generating an image of an object by means of an imaging system which has a radiation source that rotates relative to the object about an axis of rotation within a defined rotation angle...
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7280630 |
Calculation of additional projection data from projection data acquired with a divergent beam
A data consistency condition is derived for an array of attenuation values acquired with a divergent beam. Using this data consistency condition, estimates of selected attenuation values can be...
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7277523 |
Contour and scout scanning technique for pulsed x-ray large area CT detectors
A diagnostic imaging system includes an x-ray source ( 16 ), which is rotated around an examination region ( 20 ). A subject, disposed on a couch ( 30 ), is translated longitudinally through the...
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7277524 |
Method for detecting and visualizing dynamic processes in an object volume
A method is disclosed for a multislice computer assisted tomograph, capable of carrying out a spiral scan of an object volume with a pitch p selected to be small enough that each slice of the...
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7274766 |
Method and arrangement for three-dimensional medical X-ray imaging
This invention relates to a medical X-ray device arrangement for producing three-dimensional information of an object in a medical X-ray imaging, the medical X-ray device arrangement comprising an...
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7272205 |
Methods, apparatus, and software to facilitate computing the elements of a forward projection matrix
A method for calculating an element of a projection includes calculating an element A i,j of a projection matrix using at least two different rays through a voxel.
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7272429 |
Methods and apparatus for facilitating a reduction in artifacts
A method for facilitating a reduction in artifacts includes receiving data regarding a first energy spectrum of a scan of an object, and receiving data regarding a second energy spectrum of a scan...
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7269242 |
X-ray CT apparatus
An X-ray CT apparatus is capable of obtaining an image of arbitrary size for an arbitrary part of an object to be examined. The X-ray CT apparatus prepares two-dimensional data and...
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7269244 |
Methods and apparatus for generating thick images in cone beam volumetric CT
A method includes performing a Cone Beam reconstruction of a thick image using a plurality of virtual planes.
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7269241 |
Method and arrangement for medical X-ray imaging and reconstruction from sparse data
The invention relates to a medical X-ray device 5 arrangement for producing three-dimensional information of an object 4 in a medical X-ray imaging medical X-ray device arrangement comprising...
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7263155 |
Radiography apparatus and radiation image processing method
A plurality of pieces of image data processed by a preprocessed circuit are sequentially received and at least one representative image is selected from among the plurality of pieces of image data...
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7263169 |
X-ray computed tomography apparatus with beam-gating diaphragm
An x-ray computed tomography apparatus has an x-ray source that can be rotated around a system axis and a diaphragm that is disposed downstream from the x-ray source in the ray propagation...
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7260169 |
Device and method for computer tomography
A device and a method for the multispectral correction of radiation hardening in computer tomography with variable tube voltage is described. In particular, a water correction and a...
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7257186 |
Imaging method for a multi-slice spiral CT scan, and a computer tomography unit for carrying out this method
An imaging method is disclosed for a multi-slice spiral CT scan. A CT unit is disclosed for carrying out this method. In the method, the filtering may be formed by use of multiple applications of a...
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7254438 |
Multimodality medical imaging system and method with intervening patient access area
The invention comprises a system and method for creating medical images of a subject patient using a plurality of imaging devices, such as tomographic imaging scanners. The system comprises a...
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7252433 |
X-ray apparatus with radiation shielding that accepts an unshielded x-ray radiator therein
An x-ray apparatus that accepts an x-ray radiator therein has shielding for the x-ray leakage radiation originating from the x-ray radiator that is an Integral component of (built into) the x-ray...
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7254209 |
Iterative CT reconstruction method using multi-modal edge information
A computed tomography (CT) reconstruction method includes implementing an iterative image reconstruction process for CT metrology of an object, wherein the iterative reconstruction process utilizes...
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7251306 |
Methods, apparatus, and software to facilitate iterative reconstruction of images
A method of reconstructing an image includes performing an iterative CT X-ray image reconstruction using a model including a point spread function (PSF) to reconstruct an image.
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7251523 |
Tomogram creating device and radiation examining apparatus
An X-ray CT examination using a radiation examining apparatus corresponding to an X-ray CT is effected on an unbreathed examinee. A tomogram creating apparatus creates a first tomogram, based on an...
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7251307 |
Fan-beam and cone-beam image reconstruction using filtered backprojection of differentiated projection data
A tomographic image reconstruction method produces either 2D or 3D images from fan beam or cone beam projection data by filtering the backprojection image of differentiated projection data. The...
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7245755 |
Algorithm for image reconstruction and image noise analysis in computed tomography
A method and apparatus are provided for reconstructing a tomographic image from fan-beam or cone-beam data. The method includes the steps of collecting fan-beam or cone-beam data over an image...
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7245692 |
X-ray imaging systems and methods using temporal digital signal processing for reducing noise and for obtaining multiple images simultaneously
X-ray imaging systems and methods are provided that use temporal digital signal processing for reducing noise and for obtaining multiple images simultaneously. An x-ray imaging system can include...
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7245691 |
Radiation tomographic imaging apparatus and imaging method using it
A radiation tomographic imaging apparatus includes a scanning device for scanning a predefined region in a subject, a prescribing device for prescribing beforehand a position at which an image of...
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7245750 |
Method and apparatus for automatically determining the location of individual teeth within electronic model images
The method and apparatus provides a system for automatically determining the location of individual teeth within an electronic model image of a patients mouth. The electronic model image allows for...
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7239730 |
Method and apparatus for volume scoring calcification concentrations of a CT scan
A method for volume scoring a concentration of calcification within a region of interest includes receiving a value for a first calcium lesion volume based on the concentration of calcification...
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7236561 |
Method and system for assembling an X-ray imaging system
Methods and systems for assembling an X-ray imaging system are provided. The method for assembling an X-ray imaging system includes fabricating a rail that includes an arcuate member. The arcuate...
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7236558 |
Three-dimensional image display device creating three-dimensional image directly from projection data
An imaging device accesses projection data collected by a medical imaging system during a scan of a body. The imaging device uses the projection data directly to render an image of a region of...
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7236620 |
Computer-aided detection methods in volumetric imagery
This invention provides a method for detecting abnormalities in medical images, particularly for the detection of polyps in the colon from computed tomography imagery. Specifically a set of colon...
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7231076 |
ROI selection in image registration
A method and system is presented for automatically selecting a region of interest (ROI) within an image of an object, for example when performing non-rigid image registration between the image and...
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7221730 |
Multi-row detector x-ray CT apparatus and method for creating tomogram
An X-ray CT apparatus comprising a scanner that includes an X-ray source and an X-ray detector having two-dimensionally arranged X-ray detector elements, disposed on the opposite side of the...
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7215805 |
Method and apparatus for spiral scan computed tomography
In a method for computed tomography and a computed tomography apparatus for scanning a subject with a conical ray beam emanating from a focus that detects a matrix-like detector array, the focus is...
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