Patent application number | Description | Published |
20080279328 | Systems and Methods Using X-Ray Tube Spectra For Computed Tomography Applications - Computed tomography (CT) systems are provided that utilize x-ray tube spectra in connection with the generation and/or interpretation of CT data. The disclosed systems and methods use x-ray tube spectra associated with CT systems to enhance contrast and/or image quality, e.g., by making use of energy selective detection techniques. The x-ray spectra may be determined in a variety of ways, e.g., incorporation of a spectral x-ray tube model into the CT system, using the output of Monte-Carlo simulations, and/or processing measured experimental spectral tube data for the CT system. The x-ray tube spectra is generally generated by and/or stored in a computer system associated with the CT system and may be used in support of an energy selective detective method and/or generation of spectral CT images. | 11-13-2008 |
20090059830 | METHOD OF SIGNALLING, A COMMUNICATION SYSTEM AND A COMMUNICATION EQUIPMENT - First and second data is transmitted simultaneously by modulating a first set of signal constellation points, corresponding to the first data, with second data thereby creating a second set of constellation points. The second set of constellation points comprises two subsets corresponding to two values of the first data. The constellation points are selected such that the minimum distance between the first and second subsets is not less than the minimum distance between the constellation points of the first set of constellation points. | 03-05-2009 |
20090161819 | SYSTEMS AND METHODS FOR SCANNING AND DATA ACQUISITION IN COMPUTED TOMOGRAPHY (CT) APPLICATIONS - Systems and methods for data acquisition in computed tomography (CT) applications are provided. The systems and methods are particularly adapted for scanning and acquiring/processing data in connection with high-power cone-beam CT applications. The electron beam is moved/scanned along the anode surface to multiple focal positions. Data acquisition for a full projection at one focus position and one view angle is achieved by activating each focus position multiple times during the data acquisition for one angle of the gantry. The detector array and associated data processing system are adapted to rapidly switch between the different focus positions during the acquisitions for one view angle and to collect all data belonging to the same projection into the same data set. Adaptive electron optics are utilized to move/scan the electron beam along the anode surface to the various focus positions. Alternatively, a plurality of cathodes may be provided for respective focus positions and the system may support fast switching therebetween to achieve desirably short spot times. The disclosed CT system permits greater power densities without risk of heat damage to the anode and effectively increases the track velocity of the electron beam on the anode surface. The CT system and associated data acquisition methods have particular utility in CT applications requiring increased time resolution and/or spatial resolution, e.g., cardiac CT applications. | 06-25-2009 |
20090290050 | COMPENSATION OF LEAKAGE CURRENT AND RESIDUAL SIGNALS FOR INTEGRATING DETECTOR BASED ON DIRECT X-RAY CONVERSION - The application describes an X-ray detector, which uses direct X-ray conversion (DiCo) combined with CMOS pixel circuits. DiCo materials have to be used with high voltage to achieve a high field strength. This makes the sensor prone to leakage currents, which falsify the measured charge result. Moreover, most direct conversion materials suffer from large residual signals that lead to temporal artifacts (ghost images) in an X-ray image sequence. A circuit is described, which senses the sensor's dark current including residual signals from previous exposures before the sensor is exposed (again) to X-ray, and freezes relevant circuit parameters at the end of the sensing phase in such way, that the dark current (leakage current and residual signal) can still be drained during exposure. Therefore, the charge pulses generated in the sensor due to X-ray exposure can be integrated without charges carried by the leakage current or residual signal, thus obtaining a more accurate estimate of the deposited X-ray energy. | 11-26-2009 |
20090304149 | X-RAY DETECTOR IMAGING WITH POLYCHROMATIC SPECTRA - An x-ray detector has a sensor ( | 12-10-2009 |
20090321643 | DETECTOR FOR AND A METHOD OF DETECTING ELECTROMAGNETIC RADIATION - A detector unit ( | 12-31-2009 |
20100012845 | ENERGY-RESOLVING DETECTION SYSTEM AND IMAGING SYSTEM - The invention relates to an energy-resolving detection system for detecting radiation ( | 01-21-2010 |
20100020924 | APPARATUS, IMAGING DEVICE AND METHOD FOR COUNTING X-RAY PHOTONS - The present invention relates to an apparatus ( | 01-28-2010 |
20100027743 | APPARATUS AND METHOD FOR DETERMIINING A DETECTOR ENERGY WEIGHTING FUNCTION OF A DETECTION UNIT - The invention relates to an apparatus for determining a detector energy weighting function of a detection unit ( | 02-04-2010 |
20100111248 | APPARATUS, IMAGING DEVICE AND METHOD FOR COUNTING X-RAY PHOTONS - The invention relates to an apparatus ( | 05-06-2010 |
20100127859 | SIMULATION AND VISUALIZATION OF SCATTERED RADIATION - Scattered radiation has non-intuitive properties. A signalling system ( | 05-27-2010 |
20100140491 | RADIATION SENSITIVE DETECTOR - An apparatus includes an x-ray source ( | 06-10-2010 |
20100172445 | RECEIVER APPARATUS AND METHOD FOR RECEIVING DATA UNITS OVER A CHANNEL - When transmitting medium access control protocol data units for the high speed downlink shared channel over a plurality of hybrid automatic repeat request processes, one of the processes can be in a retransmission procedure. In this case, stalling of the transmission can occur, because the medium access control layer for the high speed downlink shared channel of the receiver apparatus ( | 07-08-2010 |
20100172466 | RADIATION DETECTOR WITH COUNTING ELECTRONICS - The invention relates to a radiation detector, particularly an X-ray detector ( | 07-08-2010 |
20100172467 | APPARATUS AND METHOD FOR GENERATING COUNTABLE PULSES FROM IMPINGING X-RAY PHOTONS; AND CORRESPONDING IMAGING DEVICE - The present invention relates to an apparatus ( | 07-08-2010 |
20100187432 | SPECTRAL PHOTON COUNTING DETECTOR - An apparatus includes an integrator ( | 07-29-2010 |
20100193700 | SPECTRAL PHOTON COUNTING DETECTOR - An apparatus includes a scale factor determiner ( | 08-05-2010 |
20100200760 | RADIATION DETECTOR WITH A STACK OF SCINTILLATOR ELEMENTS AND PHOTODIODE ARRAYS - The invention relates to a radiation detector and a method for producing such a detector, wherein the detector comprises a stack of the scintillator elements and photodiode arrays. The PDAs extend with electrical leads into a rigid body filling a border volume lateral of the scintillator elements, wherein said leads end in a contact surface of the border volume. Moreover, a redistribution layer is disposed on the contact surface, wherein electrical lines of the redistribution layer contact the leads of the PDAs. | 08-12-2010 |
20100213381 | RADIATION DETECTOR WITH SEVERAL CONVERSION LAYERS - The invention relates to a radiation detector ( | 08-26-2010 |
20100252744 | RADIATION DETECTOR WITH A PLURALITY OF ELECTRODE SYSTEMS - The invention relates to a radiation detector that comprises a converter element and a plurality of electrode systems arranged on said element, wherein each electrode system comprises a primary electrode and a supplementary electrode, which are connected to a readout circuitry. The primary and the supplementary electrodes may particularly be realized by planar, parallel stripes extending in a common plane, wherein said stripes are electrically connected above said plane. | 10-07-2010 |
20100322380 | X-RAY DETECTOR FOR PHASE CONTRAST IMAGING - The invention relates to an X-ray detector ( | 12-23-2010 |
20110017918 | SINGLE PHOTON RADIATION DETECTOR - The invention relates to a radiation detector ( | 01-27-2011 |
20110036989 | COUNTING DETECTOR - A pulse shaper ( | 02-17-2011 |
20110079865 | RADIATION DETECTION AND A METHOD OF MANUFACTURING A RADIATION DETECTOR - The invention relates to a radiation detector ( | 04-07-2011 |
20110211668 | CONVERTER ELEMENT FOR A RADIATION DETECTOR - The invention relates to converter element ( | 09-01-2011 |
20110211669 | RADIATION DETECTOR WITH AN ARRAY OF ELECTRODES - The invention relates to a radiation detector ( | 09-01-2011 |
20110315888 | APPARATUS AND METHOD FOR DATA ACQUISITION USING AN IMAGING APPARATUS - A detector tile ( | 12-29-2011 |
20120001084 | SPECTRAL IMAGING - A detector array ( | 01-05-2012 |
20120032085 | SPECTRAL IMAGING - An imaging system includes a scintillator array ( | 02-09-2012 |
20120085915 | PROCESSING ELECTRONICS AND METHOD FOR DETERMINING A COUNT RESULT, AND DETECTOR FOR AN X-RAY IMAGING DEVICE - The present invention relates to processing electronics ( | 04-12-2012 |
20120228486 | RADIATION DETECTOR ASSEMBLY WITH TEST CIRCUITRY - A radiation detector assembly ( | 09-13-2012 |
20130003928 | MULTIFRAME X-RAY DETECTOR FOR IMAGING SYSTEM WITH DISTRIBUTED X-RAY SOURCES - Device and method for synchronously switching activating a first and second charge accumulation section ( | 01-03-2013 |
20130168557 | RADIATION DETECTOR WITH STEERING ELECTRODES - The invention relates to a radiation detector ( | 07-04-2013 |
20130237818 | PET-CT SYSTEM WITH SINGLE DETECTOR - A radiation detector ( | 09-12-2013 |
20130256541 | DIRECT CONVERSION X-RAY DETECTOR - The invention relates to a radiation detector ( | 10-03-2013 |
20130284940 | DETECTION DEVICE FOR DETECTING PHOTONS EMITTED BY A RADIATION SOURCE - The invention relates to a detection device ( | 10-31-2013 |
20140198710 | FEEDBACK SIGNALLING FOR MULTICAST DATA TRANSMISSION - Data transmission in a multicast fashion in which retransmissions are requested by recipients sending feedback to the one sender. Receiving stations are informed about the feedback of another receiving station. This is done by mirroring the feedback of receiving stations to other receiving stations. Due to this, in case, for example, one of the mirrored feedbacks is a negative acknowledgement message, the other receiving stations are informed that it is no longer necessary to provide their feedback, since a retransmission will be initiated anyway. Advantageously, this may allow reduced interference in the direction of the feedback. | 07-17-2014 |
20140254749 | PHOTON COUNTING DETECTOR - An imaging system ( | 09-11-2014 |
20140284489 | RADIATION-SENSITIVE DETECTOR DEVICE WITH CHARGE-REJECTING SEGMENT GAPS - In radiation-sensitive detector devices, such as direct conversion detectors, charges are drifting within an externally applied electric field towards collecting electrodes ( | 09-25-2014 |
20140319363 | RADIATION DETECTOR - The present invention relates to radiation detector ( | 10-30-2014 |
20140328465 | X-RAY DETECTOR - The present invention relates to an x-ray detector comprising a sensor unit ( | 11-06-2014 |