Hansis
Eberhard S. Hansis, Menlo Park, CA US
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20130077847 | RECONSTRUCTION FOR CONE-BEAM COMPUTED TOMOGRAPHY IMAGING WITH OFF-CENTER FLAT PANEL DETECTOR - Computed tomography (CT) reconstruction includes reconstructing an axially extended reconstructed image from a measured cone beam x-ray projection data set (Pm), optionally having an off-center geometry. The reconstructing is performed for an extended volume (eFOV) comprising a reconstructable volume (rFOV) of the measured cone beam x ray data set that is extended along the axial direction. The projection data set may be weighted in the volume domain. Iterative reconstruction may be used, including initializing a constant volume and performing one or more iterations employing a first iterative update followed by one or more iterations employing a second, different iterative update. Alternatively, backprojection filtration (BPF) reconstruction may be used, including transforming the projection data set to a new geometry including finite differences between neighboring projection views and performing BPF using Hilbert filtering along a plurality of different directions and averaging the resultant reconstructed images to generate the final reconstructed image. | 03-28-2013 |
Eberhard Sabastian Hansis, Menlo Park, CA US
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20120057671 | DATA ACQUISITION AND VISUALIZATION MODE FOR LOW DOSE INTERVENTION GUIDANCE IN COMPUTED TOMOGRAPHY - A system and method for monitoring a guided intervention device includes determining ( | 03-08-2012 |
Eberhard Sebastian Hansis, Menlo Park, CA US
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20110295111 | SYSTEM FOR DETERMINING THE ORIENTATION OF A CATHETER - The present invention relates to a system for determining the orientation of a catheter ( | 12-01-2011 |
20120020462 | VISUALIZATION OF THE CORONARY ARTERY TREE - The present invention is related to a method for reconstruction of the coronary arteries and an examination apparatus for reconstruction of the coronary arteries. To provide improved coronary artery information, an apparatus and a method are provided where a gating signal is provided ( | 01-26-2012 |
20120207373 | THREE-DIMENSIONAL ANALYSIS OF LESIONS REPRESENTED BY IMAGE DATA - A system for three-dimensional analysis of lesions in image data is disclosed. It comprises a lesion detection subsystem ( | 08-16-2012 |
20120301003 | RECONSTRUCTING AN OBJECT OF INTEREST - A system for generating a reconstruction of an object of interest comprises a shape model generator ( | 11-29-2012 |
20120306493 | ELECTRIC PROPERTIES TOMOGRAPHY IMAGING METHOD AND SYSTEM - The invention relates to a magnetic resonance method of electric properties tomography imaging of an object, the method comprising: applying an excitation RF field to the object via a coil at a first spatial coil position ( | 12-06-2012 |
20130222430 | IMAGE ARTIFACT IDENTIFICATION AND MITIGATION - A method includes displaying at least one of projection data or reconstructed image data having visually observable artifacts, wherein the at least one of the projection data or the reconstructed image data corresponds to an imaging examination of an object or subject and displaying, concurrently with the at least one of the projection data or the reconstructed image data, sample images with known artifacts. The method further includes identifying one or more of the sample images having artifacts similar to the visually observable artifacts in the at least one of the projection data or the reconstructed image data. The method further includes displaying information about the identified one or more of the sample images, wherein the information includes information related to mitigating the visually observable artifacts. | 08-29-2013 |
20130294570 | TRUNCATION COMPENSATION FOR ITERATIVE CONE-BEAM CT RECONSTRUCTION FOR SPECT/CT SYSTEMS - A multiple modality imaging system ( | 11-07-2013 |
20140003688 | MULTIPLE MODALITY CARDIAC IMAGING | 01-02-2014 |
20140014828 | ADAPTIVE CALIBRATION FOR TOMOGRAPHIC IMAGING SYSTEMS - A method comprises: acquiring imaging data using a tomographic radiological imaging apparatus ( | 01-16-2014 |
Eberhard Sebastian Hansis, Hamburg DE
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20140072194 | MOTION COMPENSATED IMAGING - A method includes performing a motion compensated reconstruction of functional projection data using a patient-adapted motion model, which is generated based on a generic anatomical motion model and imaging data from a structural scan. A system includes a first adapter ( | 03-13-2014 |
20140119630 | DOSE-OPTIMIZED PROTOCOL FOR AC AND LOCALIZATION ON HYPRID SCANNERS - A hybrid imaging system including a first imaging system configured to acquire low resolution anatomical data of a first field of view of an anatomical structure. A second imaging system is configured to acquire functional data of the first field of view of the anatomical structure. A reconstruction processor is configured to reconstruct the functional data based on attenuation data into an attenuation corrected image. In response to the attenuation corrected image showing regions of interest, with the first imaging system or another imaging system acquiring high resolution data of one or more portions of the first field of view containing the regions of interest. The reconstruction processor reconstructs the high resolution anatomical data into one or more high resolution images of the regions of interest. | 05-01-2014 |
20140257096 | DATA-DRIVEN OPTIMIZATION OF EVENT ACCEPTANCE/REJECTION LOGIC - In Positron Emission Tomography, a time window ( | 09-11-2014 |
Eberhard Sevastian Hansis, Menlo Park, CA US
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20130243298 | DIAGNOSTIC IMAGE FEATURES CLOSE TO ARTIFACT SOURCES - When correcting for artifacts on an attenuation map caused by an artifact source in a computed tomography image, nuclear images are reconstructed two or more times, each time using a different correction technique or uncorrected attenuation data. Corresponding voxels in the reconstructed images are compared to identify local areas that change, i.e., are fragile and therefore low-confidence, and areas that do not vary or exhibit little variance among the plurality of reconstructed images and are thus accorded a higher confidence. The reconstructed nuclear image is overlaid with color encoding indicative of the amount of confidence accorded to each voxel value obtained by attenuation-corrected tomographic reconstruction. | 09-19-2013 |