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7430309 |
Computation of a geometric parameter of a cardiac chamber from a cardiac tomography data set
A method for extracting a geometric parameter from a cardiac tomography data set. The method includes providing a cardiac tomography data set and a region of interest, computing an approximative...
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7430270 |
Computerized tomography method with helical relative movement and conical beam
The invention relates to a computerized tomography method, wherein a radiation source executes an nPi relative movement along a helix with respect to an object. Acquired measured values are...
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7430269 |
Iterative data reconstruction
Iterative algorithms, which may be used for image reconstruction, include alternating projections and backprojections usually have a slow convergence, due to correlations between simultaneously...
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7428292 |
Method and system for CT imaging using multi-spot emission sources
A CT imaging system includes a rotatable gantry having an opening to receive an object to be scanned. A plurality of x-ray emission sources are attached to the rotatable gantry, each x-ray emission...
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7428290 |
X-ray CT apparatus
The present invention is intended to improve image quality ensured by a conventional (axial) scan, a cine scan, or a helical scan performed by an X-ray CT apparatus including a two-dimensional area...
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7428289 |
X-ray CT system and image processing method
An X-ray CT system comprises an X-ray source and an X-ray detector opposed to the X-ray source with a subject between them. The X-ray detector detects X-rays irradiated from the X-ray source to the...
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7426319 |
Image processing apparatus, image processing method, image processing system, program, and storage medium
In an image processing method, two images are inputted and the two inputted images are aligned. Then, an independent component analysis process using the two aligned images are performed.
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7426255 |
X-ray CT device
An X-ray CT apparatus comprises: motion information acquisition means that acquires periodical motion information on a motion portion of an object to be examined; a detector that rotates together...
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7424138 |
Medical image processing apparatus, medical image processing system and medical image processing method
A medical image processing apparatus which performs an image processing on a radiation image including a grid pattern obtained by performing radiography with a grid for eliminating scattered...
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7424089 |
System and method for reconstructing image by using straight-line trajectory scan
It is disclosed a system and a method for reconstructing an image by using a straight-line trajectory scan to avoid image spatial resolution reduction due to interpolations in angular direction and...
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7424088 |
Image reconstruction method using Hilbert transform
A method of determining an image data value at a point of reconstruction in a computed tomography (CT) image of a scanned object, including obtaining projection data of the scanned object,...
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7422368 |
CT scanner with tripod base
A CT scanner includes a base, two fixed portions extending transversely from the base, and a rocking beam pivotally attached to the base about an axis. The CT scanner includes four wheels that...
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7418075 |
Subtle dynamic helical scan for uniform z-resolution and noise
A computed tomography apparatus, including: an X-ray helical scanning device including an X-ray generator and an X-ray detector arranged in a gantry, the helical scanning device configured to...
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7415147 |
Method of and system for destreaking the photoelectric image in multi-energy computed tomography
A method of and a system for destreaking the photoelectric image in multi-energy computed tomography are provided, wherein the photoelectric projections are generated from the projection data...
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7415094 |
Security scanner with bin return device
A security screening system for scanning items, the system comprising: a scanner, configured to produce x-ray projection data as an object is passed through the scanner, at least a portion of the...
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7415093 |
Method and apparatus of CT cardiac diagnostic imaging using motion a priori information from 3D ultrasound and ECG gating
ECG and ultrasound data of the heart are acquired in real-time during a scan. A data acquisition module is controlled during the scan to prospectively gate acquisition of CT data as a function of...
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7412028 |
Methods and system for multi-modality imaging
A method for multi-modality imaging is provided. The method includes receiving a first signal from a detector operating in a first imaging modality, and receiving a second signal from the detector...
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7412023 |
X-ray diagnostic apparatus
A X-ray diagnostic apparatus includes an X-ray imaging unit including an X-ray tube and an X-ray detecting unit to generate an X-ray image, an image generating unit generating a 3D non-blood vessel...
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7410295 |
Gantry for a computed tomography apparatus
A gantry for a computed tomography apparatus has a supporting body and a support ring for a rotatable rotary carriage. The supporting body internally exhibits a channel that communicates in terms...
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7409033 |
Tomographic reconstruction for x-ray cone-beam scan data
Disclosed is x-ray cone beam scan data reconstruction of an imaged object with a reconstruction algorithm using shift invariant filtering and backprojection with the maximum tomographic capability...
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7406188 |
Data correction method and X-ray CT apparatus
A method for applying correction adapted to the shape of a subject to be imaged. The method includes applying edge enhancement to data D(r, v, c) of interest if the difference between the data D(r,...
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7405407 |
Ion beam therapy system and its couch positioning method
A therapy system using an ion beam, which can shorten the time required for positioning a couch (patient). The therapy system using the ion beam comprises a rotating gantry provided with an ion...
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7403588 |
Method for production of tomographic slice images of an examination object using at least two X-ray beams at offset angles, and a computed tomography scanner for carrying out this method
A method is disclosed for production of tomographic slice images of an examination object using a computed tomography scanner. In order to scan an examination object, at least two X-ray beams are...
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7403587 |
Computer tomography method using a cone-shaped bundle of rays
The invention relates to a computer tomography method in which an examination area is passed through by a cone-shaped bundle of rays. The bundle of rays comes from a radiation source location which...
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7397890 |
CT system with synthetic view generation
A CT scanner system provides projection-like images of a patient volume. After a CT scan is obtained and a three-dimensional model of the patient is created, any synthetic view can be generated by...
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7397886 |
Method and apparatus for soft-tissue volume visualization
A method for obtaining data including scanning an object using a multi-energy computed tomography (MECT) system to obtain data to generate an anatomical image, and decomposing the obtained data to...
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7395180 |
Efficient translation of data from a two-dimensional array to a wedge
Systems and methods are provided for drawing a wedge from an array of data. An angular reference table contains a plurality of angle values. An angle sampler samples a subset of angle values for a...
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7394923 |
Imaging system for generating a substantially exact reconstruction of a region of interest
A method and apparatus for reconstruction of a region of interest for an object is provided. The reconstruction of the object may be based on chords which may fill a part, all, or more than all of...
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7394920 |
Automated computer-implemented method and system for reorienting emission computer tomographic myocardial perfusion images
An automated computer-implemented method for reorienting ECT myocardial perfusion images of a heart LV. The method includes receiving variously oriented tomographic images; receiving LV long-axis,...
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7391893 |
System and method for the detection of shapes in images
A system and method for detecting a shape in an image are provided. The method comprises: constructing a deformable model from an image; deforming the deformable model to remove an undesired shape...
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7391843 |
Systems and methods for adjusting noise in a medical imaging system
A method for adjusting noise in an imaging system is described. The method includes adjusting, by a processor, a noise within an image based on a patient size.
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7388983 |
Method of and system for detecting anomalies in projection images generated by computed tomography scanners
A method of and a system for detecting anomalies in projection images generated by CT scanners are provided. One type of anomaly of particular interest is bright or/and dark dots in projection...
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7388940 |
Architectures for cardiac CT based on area x-ray sources
A CT imaging system includes a rotatable gantry having an opening to receive an object to be scanned having a small field-of-view (FOV) inside a large FOV. A plurality of area sources is attached...
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7386090 |
Processes and a device for determining the actual position of a structure of an object to be examined
A CT scanner is employed having a first coordinate system called the CT coordinate system related to the CT scanner for determining an actual position of a structure of an object to be examined. A...
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7386088 |
Method and system for iterative image reconstruction
A method for iteratively reconstructing image data acquired by a computed tomography system is provided. The method comprises generating a calculated sinogram from an image estimate and generating...
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7385200 |
Re-binning method for nuclear medicine imaging devices
A generalized rebinning method transforms SPECT projection data acquired with a first type of collimator into projection data as if it were acquired with a second type of collimator, for subsequent...
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7382852 |
Method and apparatus for correcting motion in image reconstruction
One or more techniques are provided for adapting a reconstruction process to account for the motion of an imaged object or organ, such as the heart. In particular, projection data of the moving...
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7382851 |
Medical imaging diagnosis apparatus
A PET gantry and a CT gantry are placed in parallel such that the CT gantry becomes remoter to a common examination couch having a movable couch table top board mounted with a subject person and...
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7379615 |
Method for space-time filtering of noise in radiography
To reduce the fluoroscopic noise in an image I acquired at a date t, the pixels of this image are paired with the pixels of an image I′ acquired at a date t−1. For a pixel with coordinates...
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7379576 |
Method and system for patient identification in 3D digital medical images
A method of identifying a patient from digital medical images includes providing a first digital image volume of an organ of a patient and a second digital image volume of the same organ,...
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7379575 |
Method for post- reconstructive correction of images of a computer tomograph
The present invention relates to a method for correction of images recorded by a computer tomograph in which, from projection data of the computer tomograph a 2D or 3D image is reconstructed and...
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7379534 |
X-ray CT image production method and X-ray CT system
A method to reconstruct an image by utilizing a plurality of projection data items acquired with X-rays that pass through the same pixel location in the same scan field while being transmitted...
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7379525 |
Method and system for efficient helical cone-beam reconstruction
A method for reconstructing cone-beam projection data is provided. The method comprises scanning an object in helical mode, wherein the scanning comprises obtaining cone-beam projection data. The...
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7379524 |
Computer tomography scanner
A CT scanner includes a gantry supporting an x-ray source and an x-ray detector. A motor in the gantry controls rotation of the gantry relative to a mounting plate from which the gantry is...
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7378660 |
Computer program, method, and system for hybrid CT attenuation correction
Embodiments of the present invention provide a computer program, method, and system to facilitate hybrid CT attenuation correction. In one embodiment, the method generally includes acquiring data...
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7376255 |
System and method for image reconstruction
A method for reconstructing image data acquired by a computed tomography system is provided. The method comprises selecting a portion of image data to be reconstructed and determining a...
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7376213 |
CT image reconstruction through employment of function that describes interpreted movement of source around particular point of object
A CT system in an example comprises an x-ray source, a detector, a data acquisition system (DAS), and a computer. The x-ray source emits a beam of x-rays toward an object to be imaged. The detector...
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7374338 |
Gantry for a computed tomography apparatus and method for cooling a gantry
A gantry for a computed tomography apparatus has a rotary carriage that is rotatable around an axis and a support ring arranged around the rotary carriage with a circumferential cooling channel....
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7374337 |
Releasably interconnected CT and SPECT scanners
Arrangement for taking a CT scan and a SPECT scan of a patient in a single-pass diagnostic procedure. A SPECT scanner and a CT scanner are included. The SPECT scanner is mounted on a SPECT gantry...
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7372937 |
Systems and methods of non-standard spiral cone-beam computed tomograpy (CT)
Provided herein are methods of reconstructing an image from projection data provided by a tomography scanner that is based on geometric optics comprising scanning an object in a cone-beam imaging...
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