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| Number | Title | Issue Date |
| 7570742 | Apparatus and method for imaging objects with wavefields This invention describes a method for increasing the speed of the parabolic marching method by about a factor of 256. This increase in speed can be used to accomplish a number of important objectives. Firstly, the speed can be used to collect data to form true 3-D i... | 08/04/2009 |
| 7440535 | Cone beam CT apparatus using truncated projections and a previously acquired 3D CT image A 3D image of a region of an object is computed from truncated cone beam projection data acquired with an x-ray device and a prior CT image representing a larger region of the object. The truncated projection data are extrapolated to derive pseudoprojection data ass... | 10/21/2008 |
| 7436924 | Data managing system, x-ray computed tomographic apparatus, and x-ray computed tomographic system A data managing system that collectively manages raw data obtained in any of X-ray CT apparatuses with the use of a network. Raw data transmitted from any of the X-ray CT apparatuses is stored in the data managing system, and baked up to various kinds of storage dev... | 10/14/2008 |
| 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 model of a surface of interest, computing a plurality of normal vectors... | 09/30/2008 |
| 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, filtering the obtained projection data with a one-dimensional ramp filter to ... | 09/09/2008 |
| 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, v, c) of interest and data D(r, v+1, c) in a view adjacent to the vi... | 07/29/2008 |
| 7399119 | Method and system for measuring an alignment of a detector A method for measuring an alignment of a detector is described. The method includes determining, by a processor, the alignment of the detector with respect to a collimated radiation beam. The determination of the alignment is based on a plurality of signals from a f... | 07/15/2008 |
| 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 generate a first density image representative of bone material and a ... | 07/08/2008 |
| 7397887 | Computerized tomographic imaging system In cardiac CT, it is the goal to acquire data for a full scan as fast as possible. For this reason, gantry rotation is increased further and further, such that the G-forces on the tube of the devices on the gantry become a limiting factor. Alternatively, the tempora... | 07/08/2008 |
| 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, LV center and LV axial limits based on the images; receiving the endo... | 07/01/2008 |
| 7391847 | System and method for dividing images System and method for dividing radiological images. The method can include sending a first request to an image acquisition system to perform a first examination, sending a second request to the image acquisition system to perform a second examination, and combining ... | 06/24/2008 |
| 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 an error sinogram based on the calculated sinogram and a measured sin... | 06/10/2008 |
| 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 reconstruction using a 3-D algorithm devised for the second type of ... | 06/10/2008 |
| 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, segmenting each slice of the first image volume and calculating a cross-sectio... | 05/27/2008 |
| 7379527 | Methods and apparatus for CT calibration A method for normalizing a calibration of a computed tomographic (CT) imaging apparatus having a plurality of detector rows includes utilizing a prestored, predetermined inversion matrix and CT numbers obtained from images of a phantom to determine normalized calibr... | 05/27/2008 |
| 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 method further comprises processing the cone-beam projection data alon... | 05/27/2008 |
| 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 along different paths with a scanner gantry set at the same view angle or... | 05/27/2008 |
| 7376217 | Operating methods for a medical imaging system and for a computing device, and devices corresponding thereto A control device (4) for a medical imaging system drives a signal source (1) and a detector (2) so that the detector (2) registers raw data of an object (5). Said device accepts the registered raw data and conveys send data corresp... | 05/20/2008 |
| 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 corresponding portion of projection data. An adaptive filter is computed and app... | 05/20/2008 |
| 7372934 | Method for performing image reconstruction using hybrid computed tomography detectors A method for acquiring an image data set comprising energy integrating (EI) and energy discriminating (ED) data measurements is provided. The method comprises obtaining EI measurement data and ED measurement data during an acquisition cycle. The method then comprise... | 05/13/2008 |
| 7372935 | Method for minimizing image artifacts and medical imaging system The invention relates to a method for “truncation correction” in an x-ray system, i.e. a correction method during the reconstruction of projection images of an object recorded from different projection angles, if parts of the object do not lie in the field of vi... | 05/13/2008 |
| 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 geometry following a non-standard spiral path or a general piecewise s... | 05/13/2008 |
| 7369638 | System and method for detecting a protrusion in a medical image A method for detecting a protrusion in a medical image includes: acquiring a medical image, wherein the medical image is of an anatomical part; segmenting the medical image; calculating a distance map of the medical image; calculating a gradient of the distance mapp... | 05/06/2008 |
| 7366277 | Tomographic device and method therefor An image reconstruction area of a subject is divided into a plurality of image data segments, among projection data obtained by projection, projection data segments necessary for back projection processing are cut out for every image data segments and back projectio... | 04/29/2008 |
| 7362844 | Tomography appliance, and method for a tomography appliance A tomography appliance and method for a tomography appliance make it possible to calculate, in a simple and efficient manner, detector-element-related coefficients of an intensity function dependent on the detector output signal and to calculate the X-ray-emitter-re... | 04/22/2008 |
| 7362845 | Method and apparatus of global de-noising for cone beam and fan beam CT imaging Raw cone beam tomography projection image data are taken from an object and are denoised by a wavelet domain denoising technique and at least one other denoising technique such as a digital reconstruction filter. The denoised projection image data are then reconstru... | 04/22/2008 |
| 7362843 | System and method for reconstruction of cone beam tomographic projections with missing data A method for reconstructing image data from acquired tomographic projection data measurements is provided. The projection data measurements comprise one or more missing data measurements. The method comprises generating a coarse-resolution projection data set from t... | 04/22/2008 |
| 7359477 | Method for reconstructing a CT image using an algorithm for a short-scan circle combined with various lines In a method for reconstructing a CT image from data acquired from an examination subject, a reconstruction algorithm is employed that is based on an ideal short-scan circle-and-line trajectory. To adapt the reconstruction algorithm to a “real world” scan traject... | 04/15/2008 |
| 7359478 | Method for restoring truncated helical cone-beam computed tomography data A method, system, and computer program product for compensating for the unavailability of projection data of a scanned object at a selected point, the selected point located outside a detection range of a detector. The method include the steps of obtaining projectio... | 04/15/2008 |
| 7359476 | Radiation tomographic imaging apparatus and radiation tomographic imaging method, and image producing apparatus A method and apparatus for reducing image noise, increasing image resolution, and facilitating reduced exposure to a subject to be imaged or improved apparatus life. A radiation tomographic imaging apparatus comprises, as image producing means, inter-imaging-plane f... | 04/15/2008 |
| 7348564 | Multi modality imaging methods and apparatus A method for correcting emission data from Positron Emission Tomography (PET) or SPECT includes generating a plurality of computed tomography (CT) image data, selecting a portion of the CT image data, processing the selected CT data to generate a plurality of attenu... | 03/25/2008 |
| 7346142 | Computed tomography method for the reconstruction of object images from real and fictitious measured values The invention relates to a method of computed tomography wherein a radiation source moves relative to an examination zone along a helical trajectory and wherein the movement involves a rotation around a rotational axis and a shifting parallel to the rotational axis.... | 03/18/2008 |
| 7343030 | Dynamic tumor treatment system A workstation imports medical images that depict a tumor and provides tools that enable a physician to see the results of prior therapies, plan future therapies, predict the outcome of future therapies and control future therapies. The workstation processes the impo... | 03/11/2008 |
| 7340027 | Metal artifact correction in computed tomography An artifact correcting image reconstruction apparatus includes a reconstruction processor (70) that reconstructs acquired projection data (60) into an uncorrected reconstructed image (74). A classifying processor (78) classifies pixels of... | 03/04/2008 |
| 7340082 | Method and medical imaging apparatus for determining a slice in an examination volume for data acquisition in the slice In a method and medical examination apparatus for determination of the position of at least one slice in an examination area in which slice a slice image acquisition of the examination area by means of the examination device is to occur, a 3D image dataset of the ex... | 03/04/2008 |
| 7340028 | Method and device for volumetric image reconstruction The reconstruction of computer tomography data is very often based on a parallel rebinning step of the projection data prior to the filtered back projection. In case of cardiac reconstruction, a gating technique is applied to select appropriate projections for a tim... | 03/04/2008 |
| 7340026 | Reconstruction of the current flow in a vessel system The invention relates to a method of reconstructing the current flow, or the bolus arrival times, in a vessel system. For the sections (i) of the vessel tree, bolus arrival times (mi) are measured, for example in connection with an injection of contrast m... | 03/04/2008 |
| 7336759 | Scattering compensating method and scattering measuring method A method for compensating scattering includes acquiring the projective length of non-subject entities and acquiring the projective length of an object of radiography wherein the object of radiography is radiographed with a beam thickness set to the same value as a d... | 02/26/2008 |
| 7336760 | Methods, systems, and computer-program products to estimate scattered radiation in cone-beam computerized tomographic images and the like Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of ... | 02/26/2008 |
| 7327822 | Methods, apparatus, and software for reconstructing an image A method of reconstructing an image includes combining a two-dimensional forward projection function and a three-dimensional stabilizing function to generate an iterative reconstruction algorithm, and using the obtained iterative reconstruction algorithm to perform ... | 02/05/2008 |
