| Patent application number | Description | Published |
|---|
| 20100014730 | Multimodal Image Reconstruction - Computer-implemented methods of reconstructing an image object for a measured object in object space from image data in data space include causing a computer to execute instructions for providing zonal information separating the object space into at least two zones, providing at least two zonal image objects, each zonal image object being associated with one of the at least two zones, reconstructing the image object using a data model derived from forward projecting the zonal image objects into data space, wherein the contribution of each zonal image object to the data model is weighted according to a zonal scaling factor, and outputting the image object. | 01-21-2010 |
| 20100014731 | Functional Image Presentation - A computer-implemented method of presenting an image of an object includes causing a computer to execute instructions for providing a signal distribution of values N, generating a transformed distribution by calculating, for each value N, a transformed value X=√{square root over (N+3/8)}, and outputting the transformed distribution. | 01-21-2010 |
| 20100014732 | Multimodal Image Reconstruction With Zonal Smoothing - Computer-implemented methods of reconstructing an image object for a measured object in object space from image data in data space cause a computer system to execute instructions for providing zonal information separating the object space into at least two zones, providing at least two zonal image objects, each zonal image object being associated with one of the at least two zones, performing a zonal smoothing operation on at least one of the zonal image objects, thereby generating at least one smoothed zonal image object, reconstructing the image object on the basis of the at least one smoothed zonal image object, and outputting the image object. | 01-21-2010 |
| 20100014733 | DETERMINING A MULTIMODAL PIXON MAP FOR TOMOGRAPHIC-IMAGE RECONSTRUCTION - A computer-implemented method includes causing a computer system to execute instructions for providing a first data set and a second data set, each derived from a common object, providing a first tomographic image object associated with the first data set providing a second tomographic image object associated with the second data set, generating a multimodal pixon map for pixon smoothing on the basis of the first data set, the first tomographic image object, the second data set, and the second tomographic image object, and outputting the multimodal pixon map. | 01-21-2010 |
| 20100014734 | Functional Image Quality Assessment - A computer-implemented method of assessing the quality of a functional image for an object includes causing a computer to execute instructions for providing a signal distribution of values N generating a transformed distribution by calculating, for each value N, a transformed value X=√{square root over (N+¼)}, reconstructing the functional image from the signal distribution, deriving an expected distribution of expected values A from the functional image, generating a residual distribution by calculating, for each value N, a residual values ΔX=X−√{square root over (λ)}, and outputting the residual distribution. | 01-21-2010 |
| 20100054393 | External Smoothing for Tomographic Image Reconstruction - Smoothing a first object, thereby creating a smoothed object having a smoothed value associated with each object point in object space, includes receiving the first object, determining, in a series of iteration steps, single-kernel-smoothed objects, wherein each iteration step includes based on the first object, determining a start object and smoothing the start object using a kernel function associated with the iteration step, thereby creating the single-kernel-smoothed object having single-kernel-smoothed values associated with each object point, and constructing the smoothed object from the single-kernel-smoothed values. | 03-04-2010 |
| 20100054564 | Reconstructing a Tomographic Image - Tomographically reconstructing a 3D image object corresponding to a data set includes for each step in a series of iteration steps, determining an updated object by performing a combined operation, which includes performing an update operation for updating an input object and performing a pixon smoothing operation, and following a last iteration, outputting one of the updated objects as the 3D image object. | 03-04-2010 |
| 20100067766 | EXTRACTING LOCATION INFORMATION USING DIFFERENCE IMAGES FROM A NON-PARALLEL HOLE COLLIMATOR - A method for tomographic nuclear imaging determines the distance between a non-parallel hole collimator surface and a region of interest (ROI) by obtaining difference images between images acquired at different view angles of the ROI. The distance may be used in a nuclear image reconstruction algorithm to more accurately reconstruct an image of the ROI. The method takes advantage of the non-stationary Point Spread Function of a non-parallel hole collimator to determine depth information of gamma events emitted from the ROI. | 03-18-2010 |
| 20100102239 | MULTIMODALITY IMAGING SYSTEM - The application discloses multimodality imaging systems that include a gantry with a stationary unit and a rotating unit rotatable around a rotation axis and providing an opening extending along the rotation axis through which a subject is insertable, a support table coupled to the stationary unit for supporting a subject, a table drive unit coupled to the support table for translating the support table in a direction extending along the rotation axis, and a CT source coupled to the rotating unit, the CT source being configured to emit a fan beam through the opening, a CT detector coupled to the rotating unit opposite the CT source, the CT source being configured to detect the fan beam, a nuclear imaging detector coupled to the rotating unit, the nuclear imaging detector being configured to detect nuclear radiation emitted from within the opening in a direction differing from a propagation direction of the fan beam. | 04-29-2010 |
| 20100308228 | Limiting viewing angles in nuclear imaging - Methods of nuclear imaging can include, in a pre-scan, detecting radiation emitted from a patient in a first plurality of viewing angles including at least a first viewing angle and a second viewing angle, generating nuclear data from the detected radiation, reconstructing a first nuclear event distribution from the nuclear data, selecting a region of interest, determining a first signal-to-noise ratio of the first nuclear event distribution within the region of interest, selecting a second plurality of viewing angles not including the first viewing angle, reconstructing a second nuclear event distribution from the nuclear data associated with the second plurality of viewing angles, determining a second signal-to-noise ratio of the second nuclear event distribution within the region of interest, determining that the second signal-to-noise ratio is greater than or equal to the first signal-to-noise ratio, and nuclear imaging the patient by detecting nuclear data based on a nuclear imaging process that is based on the second plurality of viewing angles. | 12-09-2010 |
| 20100308817 | ADAPTING ACQUISITION TIME IN NUCLEAR IMAGING - Methods of determining an acquisition time adapted to a region of interest for a nuclear imaging process of a patient include detecting radiation from at least a first viewing angle during a first test amount of time, generating first test data from the detected radiation, reconstructing a nuclear event distribution from the first test data, determining a test signal-to-noise ratio for the reconstructed nuclear event distribution within the region of interest, and determining the acquisition time using the test signal-to-noise ratio and the first test amount of time. | 12-09-2010 |
| 20110089327 | Multimodality Imaging - An imaging system includes interleaved emission detectors and transmission detectors. Emission detectors and transmission detectors can be interleaved along the axis of relative patient motion. Emission detectors and transmission detectors can be interleaved orthogonal to the axis of relative patient motion. Emission detectors can be single photon emission computed tomography detectors and the transmission detectors can be x-ray computed tomography detectors. | 04-21-2011 |
| 20110096970 | Use of Multifocal Collimators in Both Organ-specific and Non-specific SPECT Acquisitions - A method for obtaining nuclear medical images of a patient in which one or more first images are obtained. The one or more first images can be used to identify one or more regions of interest for subsequent images that focus on the regions of interest. The process can occur iteratively until it is determined, either by a physician or a computer program that sufficient images have been obtained to identify lesions or other pathology within a reasonable level of confidence. | 04-28-2011 |
