| Patent application number | Description | Published |
|---|
| 20080205598 | Coherent Scatter Computer Tomography Material Identification - In a CSCT material identification apparatus CT-information and differential scatter cross-sections are used for material identification. According to an aspect of the present invention, a material identification is provided which uses both the differential and the total scatter cross-sections. This may yield an improved material discrimination, i.e. a better detection rate and a lower false alarm rate. | 08-28-2008 |
| 20080226019 | Multiple Scatter Correction - According to an aspect of the present invention, a correction of X-ray intensities measured in an energy-resolved diffraction method may be provided for multiple scattered radiation without any assumptions on the geometry of the object examined. According to an exemplary embodiment of the present invention, the characteristic lines of the anode material in the primary spectrum are evaluated, resulting in a component analysis of the detected spectrum which may allow for a correction for its multiple scatter part. | 09-18-2008 |
| 20080240342 | Advanced Csct Detector Shapes - The application of CSCT to baggage inspection necessitates a large field of view, resulting in a large gantry that has to sustain large centrifugal forces. Accordingly, various CSCT geometries are described which enable smaller gantry sizes. In particular, a CSCT scanner comprising a detector unit that is not focus-centred is described. | 10-02-2008 |
| 20080253509 | Acquisition Parameter Optimization For Csct - Whereas the CT image can be acquired in a single revolution, the CSCT image acquisition may require several revolutions. According to an exemplary embodiment of the present invention, a CT/CSCT apparatus may be provided which uses CT data acquired during the first revolution to optimize acquisition parameters for the subsequent revolutions. Furthermore, projection data acquired with a pre-scanner may also be used for determining current modulation or setting an optimum voltage for the subsequent CSCT scan. | 10-16-2008 |
| 20080285706 | Coherent-Scatter Computer Tomograph - Conventional CSCT may require a complex reconstruction involving a large number of calculations. According to an exemplary embodiment of the present invention, additional collimators are used in combination with energy revolving detectors, which may allow that a CSCT image may be reconstructed by a simple superposition of images obtained from different viewing angles in a direct tomography data acquisition scheme. Advantageously, a reconstruction may be avoided. Advantageously, this may allow for an improved image quality while reducing an amount of calculations required for generating the output image. | 11-20-2008 |
| 20080317311 | Coherent Scatter Imaging - A region of interest is identified using a conventional CT or X-ray approach. Then, the region of interest is scanned using a plurality of pencil beams ( | 12-25-2008 |
| 20090010381 | COMPUTER TOMOGRAPH AND RADIATION DETECTOR FOR DETECTING RAYS THAT ARE ELASTICALLY SCATTERED IN AN OBJECT - The invention relates to a computer tomograph and to a radiation detector for detecting elastically scattered rays. The computer tomograph comprises a radiation source for radiating primary radiation through an object which is present in an examination region. The primary radiation is partly scattered in the object owing to interactions with the object. A detector comprises detector elements by which the scattered rays are detected. These detector elements lie outside the region through which the primary radiation is passed, and their effective dimensions become smaller in the direction in which the scattering angles become smaller. | 01-08-2009 |
| 20090074132 | COMPUTER TOMOGRAPHY APPARATUS AND METHOD OF EXAMINING AN OBJECT OF INTEREST WITH A COMPUTER TOMOGRAPHY APPARATUS - A computer tomography apparatus ( | 03-19-2009 |
| 20090161817 | FAN-BEAM COHERENT-SCATTER COMPUTER TOMOGRAPH - However, this requires additional collimating means and this reduces the photon flux applied to the detectors. Due to this, longer measuring times may be required. Furthermore, the geometry is incompatible to known cone-beam CT-scanners. According to an exemplary embodiment of the present invention, a cone-beam CSCT scanner is provided using energy resolving detectors with a collimator arranged on the detectors, which allows spatially-resolved reconstruction of the scattering function. Advantageously, this may allow for an improved scanning speed in baggage inspection or medical applications. | 06-25-2009 |
| 20090190719 | X-RAY SOURCE APPARATUS, COMPUTER TOMOGRAPHY APPARATUS, AND METHOD OF OPERATING AN X-RAY SOURCE APPARATUS - An X-ray source apparatus ( | 07-30-2009 |
| 20090245458 | EXTENSION OF THE Q-RANGE IN CSCT - According to an embodiment of the present invention, a reconstruction scheme for a CSCT is provided which is capable of reconstructing data acquired just over a half turn, i.e. 180° plus fan angle. The reconstruction scheme may provide for an extension of the reconstruction towards smaller and larger q-regions as compared with a 360°-reconstruction, if the short scan reconstruction technique is applied to a full scan data set. | 10-01-2009 |
| 20090245463 | AUTOMATIC MATERIAL DISCRIMINATION BY USING COMPUTER TOMOGRAPHY - Method and apparatus are provided for combining information obtained from CT and Coherent Scatter Computed Tomography to better determine whether there are dangerous materials in the baggage or not. Hence, the attenuation coefficient and the diffraction pattern of the item of baggage are used to determine whether the baggage should be cleared. | 10-01-2009 |
| 20090304145 | COMPUTER TOMOGRAPHY APPARATUS - A computer tomography apparatus ( | 12-10-2009 |
| 20100074393 | BEAM FILTER, PARTICULARLY FOR X-RAYS - The invention relates to a beam filter ( | 03-25-2010 |
| 20100166139 | EFFECTIVE DUAL-ENERGY X-RAY ATTENUATION MEASUREMENT - It is described a method and a CT system for measuring dual-energy X- ray attenuation data of an object. The CT system comprises a rotatable holder, an X-ray source comprising two different X-ray focus points, and an X-ray detection device comprising a plurality of detector elements exhibiting different spectral sensitivities. The method comprises the steps of (a) adjusting the X-ray source such that it emits X-rays originating a first focus point, (b) acquiring first attenuation data separately with first detector elements and with second detector elements, (c) moving the X-ray focus discretely to a second focus point, and (d) acquiring second attenuation data separately with both types of detector elements. Thereby the two focus points are spatially separated from each such that a first beam path originating from the first focus point penetrates a certain voxel within the object and impinges on a first detector element and a second beam path originating from the second X-ray focus point penetrates the same voxel and impinges on a second detector element. | 07-01-2010 |
| 20100166285 | SYSTEM AND METHOD FOR ACQUIRING IMAGE DATA - According to an exemplary embodiment an imaging system ( | 07-01-2010 |
| 20100183115 | SYSTEM AND METHOD FOR ACQUIRING IMAGE DATA - A Computer Tomography system for examining an object is disclosed. The system comprises a first X-ray tube, a second X-ray tube, a first X-ray detection unit and a second X-ray detection unit. Preferably, the first X-ray detection unit is adapted to acquire a first data set by detecting radiation emitted by the first X-ray tube after passing through the object under examination, and the second X-ray detection unit is adapted to acquire a second data set by detecting radiation emitted by the second X-ray tube after being scattered by the object under examination. The system has particular application to the field of baggage inspection. | 07-22-2010 |
| 20100270472 | DIGITAL PULSE PROCESSING FOR MULTI-SPECTRAL PHOTON COUNTING READOUT CIRCUITS - An apparatus includes a local minimum identifier ( | 10-28-2010 |
| 20110012014 | SPECTRAL DETECTOR CALIBRATION - A method includes detecting radiation that traverses a material having a known spectral characteristic with a radiation sensitive detector pixel that outputs a signal indicative of the detected radiation and determining a mapping between the output signal and the spectral characteristic. The method further includes determining an energy of a photon detected by the radiation sensitive detector pixel based on a corresponding output of the radiation sensitive detector pixel and the mapping. | 01-20-2011 |
| 20110096892 | SPECTRAL CT - An imaging system includes a radiation source ( | 04-28-2011 |
| 20110096905 | K-EDGE IMAGING - An imaging system including a radiation source ( | 04-28-2011 |
