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| Number | Title | Issue Date |
| 7272208 | System and method for an adaptive morphology x-ray beam in an x-ray system The present invention provides for an x-ray system and method using dynamic automated spatial modulation of an x-ray beam. The system includes an x-ray source transmitting a spatially modulated beam towards an object to be imaged, an x-ray detector receiving the bea... | 09/18/2007 |
| 7254623 | Method and apparatus for reducing x-ray dosage in CT imaging prescription The present invention is directed to a networked scanner environment wherein each scanner is communicatable with one or more databases configured to store data associated with previously executed imaging sessions. The one or more databases may be queried by a user t... | 08/07/2007 |
| 7238945 | CT detector having a segmented optical coupler and method of manufacturing same The present invention is a directed to a CT detector for a CT imaging system that incorporates a segmented optical coupler between a photodiode array and a scintillator array. The segmented optical coupler also operates as a light collimator which improves the light... | 07/03/2007 |
| 7227356 | Method and apparatus of multi-echo MR data acquisition with non-discrete flip angle train An imaging technique is disclosed to reduce ringing artifacts from amplitude decay in MR multi-echo acquisition. A flip angle train is determined to match scan parameters for an MR scan to acquire MR data from a given tissue. Reducing the effects of amplitude decay ... | 06/05/2007 |
| 7224766 | CT detector array having non-pixelated scintillator array The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in paral... | 05/29/2007 |
| 7219222 | Method and system to grant access to software options resident on a medical imaging device A system and method are provided that remotely grants limited access and permits use of resident software options in accordance with terms consistent with an access grant. The invention includes receiving an access request from a user to access a software option res... | 05/15/2007 |
| 7209777 | Method and apparatus for automated tracking of non-linear vessel movement using MR imaging A system and method is disclosed for tracking a moving object using magnetic resonance imaging. The technique includes acquiring a scout image scan having a number of image frames and extracting non-linear motion parameters from the number of image frames of the sco... | 04/24/2007 |
| 7209778 | Embedded thermal control system for high field MR scanners A thermal control system having an initial bore condition and a thermal boundary condition for an MRI includes a thermal controller adapted to set at least one dynamic limit on power input into an MRI gradient coil. The dynamic limit is determined for a first comman... | 04/24/2007 |
| 7203704 | Method and apparatus of cross-pollinating a post to computerized bulletin boards A GUI such as a web page having a hyperlink thereon is provided and that allows a user to contribute a post to a bulletin board or a thread dedicated to a particular topic of interest. The present invention also includes a process by which the content of the user po... | 04/10/2007 |
| 7189972 | X-ray detector with impact absorbing cover The present invention is a directed to a cover assembly for an x-ray detector that incorporates impact-absorbing material designed to absorb the shock, vibration, stress, and strain placed on the detector when dropped or subjected to a load. The cover assembly may i... | 03/13/2007 |
| 7190759 | Support structure for Z-extensible CT detectors and methods of making same Pin-based support structures for easily and precisely assembling CT detector components into individual detector modules are described, as are methods of making the same. The pins in these structures serve as the local reference points against which all other detect... | 03/13/2007 |
| 7190170 | Particle doped magnetic coil A system and method for decreasing partial discharge between adjacent conductive plates includes suspending a plurality of particles in the space between adjacent plates of a magnetic coil. The plurality of particles are generally uniformly dispersed in the space an... | 03/13/2007 |
| 7184813 | Method and apparatus for improved metabolite signal separation in MR spectroscopy A technique is set forth for MR spectroscopy that is capable of reducing signal overlap between metabolite signals for improved clinical analysis of metabolite content. The technique includes varying an echo time across a scanning dimension. Once a span of echo time... | 02/27/2007 |
| 7176684 | Method and system of determining in-plane motion in propeller data The present invention is directed to a method of MR imaging whereby a k-space blade extending through a center of k-space from a subject in motion is acquired. A high-pass convolution of the k-space blade with a reference k-space blade is then determined and convert... | 02/13/2007 |
| 7177387 | Self-aligning scintillator-collimator assembly The present invention is directed to scintillator module for a CT detector as well as an apparatus and method of manufacturing the same. The scintillator module is comprised of a scintillator array having a plurality of scintillators aligned in parallel with respect... | 02/13/2007 |
| 7173998 | CT detector having a segmented optical coupler and method of manufacturing same The present invention is a directed to a CT detector for a CT imaging system that incorporates a segmented optical coupler between a photodiode array and a scintillator array. The segmented optical coupler also operates as a light collimator which improves the light... | 02/06/2007 |
| 7173425 | Method and apparatus to generate a circular polarized RF field independent of subject asymmetry An RF coil assembly is presented that incorporates balun networks to eliminate standing waves from cables used to apply a voltage to multiple drive ports of the coil. Each drive port is driven by an applied voltage that is shifted 90 degrees in the tangential direct... | 02/06/2007 |
| 7171254 | RF coil embedded with homogeneity enhancing material The present invention provides a system and method of improved homogeneity whereby at least a portion of an RF coil is filled with homogeneity enhancing material. Disposing the homogeneity enhancing material, such as perfluorocarbon, within the RF coil, implementati... | 01/30/2007 |
| 7167539 | Thermal sensing detector cell for a computed tomography system and method of manufacturing same The present invention provides a method of manufacturing a CT detector cell having an x-ray absorption component and a thermal sensing component. The thermal sensing component is configured to detect thermal differentials in the absorption component resulting from t... | 01/23/2007 |
| 7149278 | Method and system of dynamically controlling shaping time of a photon counting energy-sensitive radiation detector to accommodate variations in incident radiation flux levels A method and system of counting and tagging radiation energy received by a radiation detector is presented. The method and system are designed to dynamically control the sampling window or shaping time characteristics of a photon counting detector to accommodate var... | 12/12/2006 |
| 7138800 | Method and apparatus for vibration-related artifact reduction A method and apparatus for reducing vibration-related artifacts in diffusion weighted imaging determines a vibrational frequency of an MR system and modifies scan parameters such that vibrational frequencies induced on the MR system are inconsistent with the vibrati... | 11/21/2006 |
| 7135864 | System and method of elliptically driving an MRI Coil An RF coil apparatus for generating an elliptical polarization field includes an RF coil assembly having a pair of independent drive channels connected thereto. The drive channels are driven such that an elliptical polarization field is generated in a volume-of-inte... | 11/14/2006 |
| 7127032 | X-ray detector having an accelerometer A method and system of electronically detecting and measuring gravitational loads placed on an x-ray detector is disclosed. An x-ray detector incorporates an accelerometer that detects and provides an output as to the extent of gravitational loads or forces placed t... | 10/24/2006 |
| 7113894 | System and method for coordinated remote activation of multiple software-based options A system and method are provided to remotely activate options resident on a plurality of devices within a site. The invention includes generating a number of activation keys, each of which is specific to one of a plurality of in-field devices having inactive options... | 09/26/2006 |
| 7112797 | Scintillator having integrated collimator and method of manufacturing same The present invention is directed to an integrated scintillator and collimator array for a CT detector. The integrated scintillator and collimator are fabricated from a manufacturing process or technique whereupon an array of scintillator material is positioned on a... | 09/26/2006 |
| 7110488 | X-ray generator and slip ring for a CT system The present invention is directed to an apparatus for supplying power to a rotatable x-ray tube for generation of an x-ray beam for acquisition of CT data. The apparatus includes a slip ring to transfer power from a stationary inverter to a rotatable HV tank. The HV... | 09/19/2006 |
| 7109710 | Method and apparatus to improve signal-to-noise ratio without compromising field-of-view for simultaneous MR data acquisition by an array of RF coils of an MR scanner A method and apparatus is disclosed to analogically combine MR signals from RF coils to form multiple sets of analogically combined MR signals, and then digitally combine the analogically combined sets of MR signals to provide a digitized signal set for image recons... | 09/19/2006 |
| 7102352 | Method and system for image artifact reduction using nearest-neighbor phase correction for echo planar imaging A nearest neighbor phase correction technique is implemented to reduce image artifacts due to phase errors in data acquired in an EPI scan. Image quality for EPI applications, such as DWI, DTI, and fMRI, is improved. ... | 09/05/2006 |
| 7098662 | Method and system of MR imaging with variable readout gradient filtering A method and system of MR imaging where variable readout gradient filtering (VRGF) is carried out after MR data acquired during gradient field transitions has been phase-corrected. Thus, phase errors can be removed prior to VRGF re-sampling of the MR data. As such, ... | 08/29/2006 |
| 7092481 | Direct conversion energy discriminating CT detector A CT detector capable of energy discrimination and direct conversion is disclosed. The detector includes multiple layers of semiconductor material with the layers having varying thicknesses. The detector is constructed to be segmented in the x-ray penetration direct... | 08/15/2006 |
| 7088849 | Method and apparatus for detecting low contrast object in a diagnostic image The present invention is directed to a method and apparatus of objectively testing the low contrast performance of an imaging system. Images of a uniform phantom and images of a low contrast detectability phantom are reconstructed. Thereafter, a group of pixels from... | 08/08/2006 |
| 7088799 | Method and apparatus for presenting multiple pre-subject filtering profiles during CT data acquisition The present invention is directed to a method and apparatus for CT data acquisition using a rotatable pre-subject filter having more than one filtering profile to control radiation exposure to a subject. The filter is caused to rotate by a motor and bearing assembly... | 08/08/2006 |
| 7088100 | Method and apparatus to generate a circular polarized RF field independent of subject asymmetry An RF coil assembly is presented that incorporates balun networks to eliminate standing waves from cables used to apply a voltage to multiple drive ports of the coil. Each drive port is driven by an applied voltage that is shifted 90 degrees in the tangential direct... | 08/08/2006 |
| 7084404 | CT detector having a segmented optical coupler and method of manufacturing same The present invention is a directed to a CT detector for a CT imaging system that incorporates a segmented optical coupler between a photodiode array and a scintillator array. The segmented optical coupler also operates as a light collimator which improves the light... | 08/01/2006 |
| 7081752 | System and method of electrically loading radio-frequency coils using conductive polymers A system and method including an apparatus for use in electrically loading RF coils of an MRI system is disclosed. The apparatus includes a polymer interdispersed with an electrically conductive additive such that the apparatus provides the necessary electrical load... | 07/25/2006 |
| 7078900 | Method and system of determining parameters for MR data acquisition with real-time Boptimization The present invention provides a system and method of MR scan prescription to achieve in a fast, simple, and effective manner the optimal peak excitation field strength for a given pulse shape and flip angle such that the minimum TR for the MR scan can be optimized ... | 07/18/2006 |
| 7075299 | Method and apparatus to correct amplitude modulation in multi-echo magnetic resonance imaging An imaging technique is disclosed for multi-echo, magnetic resonance imaging that addresses amplitude modulations, such as those caused by T2 decay and stimulated echo refocusing, in acquired MR data. Acquired MR data is corrected by non-phase encoded data such that... | 07/11/2006 |
| 7076091 | Algebraic reconstruction of images from non-equidistant data A method of resampling medical imaging data from a first spatial distribution of data points onto a second spatial distribution of data points, including determining a matrix of reverse interpolation coefficients for resampling data from said second spatial distribu... | 07/11/2006 |
| 7068751 | System and method of determining a center of mass of an imaging subject for x-ray flux management control A system and method of diagnostic imaging is provided that includes positioning a subject in a scanning bay, comparing a center of mass of the subject to a reference point, and repositioning the subject in the scanning bay to reduce a difference in position between ... | 06/27/2006 |
| 7068750 | System and method of x-ray flux management control A system and method of diagnostic imaging is provided that includes determining a position of a subject in a scanning bay and tailoring x-ray attenuation such that the specific position of the subject is taken into consideration. The present invention automatically ... | 06/27/2006 |
