Circuit arrangement for counting x-ray radiation x-ray quanta by way of quanta-counting detectors, and also an application-specific integrated circuit and an emitter-detector system

A circuit device and integrated circuit technology, applied in the direction of radiation intensity measurement, equipment for radiological diagnosis, application, etc., can solve problems such as inability to use

Active Publication Date: 2011-07-27
SIEMENS HEALTHCARE GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The data from these regions are then no longer proportional to the flow velocity and thus lead t

Method used

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  • Circuit arrangement for counting x-ray radiation x-ray quanta by way of quanta-counting detectors, and also an application-specific integrated circuit and an emitter-detector system
  • Circuit arrangement for counting x-ray radiation x-ray quanta by way of quanta-counting detectors, and also an application-specific integrated circuit and an emitter-detector system
  • Circuit arrangement for counting x-ray radiation x-ray quanta by way of quanta-counting detectors, and also an application-specific integrated circuit and an emitter-detector system

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Embodiment Construction

[0057] figure 1 An exemplary CT system C1 is shown in a 3D illustration. The CT system C1 comprises a gantry housing C6, in which a gantry (not further illustrated here) is located, to which is fastened a first Detector C3 of the first X-ray tube C2. Optionally, a second X-ray tube C4 with an opposite second detector C5 according to the invention is also provided. The patient C7 is on a patient couch C8 movable in the direction of the system axis C9, and the patient can move continuously or sequentially along the system axis C9 along with the patient couch C8 between the X-ray tube C2 and the opposite detector C3 during scanning. the measuring field in between. The process is carried out via the control and computing unit C10 with the aid of the computer program Prg 1 -Prg n control.

[0058] The control and computing unit C10 is connected to at least one counter of a circuit arrangement according to the invention, which is an application-specific integrated circuit, whi...

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Abstract

A circuit arrangement of a quanta-counting detector with a multiplicity of detector elements is disclosed, wherein the X-ray quanta registered in each detector element generate a signal profile. In at least one embodiment, the circuit arrangement, in each detector element, includes: at least one first comparator with a first energy threshold lying in the energy range of the measured X-ray quanta and at least one second comparator with a second energy threshold lying above the energy range of the measured X-ray quanta, the at least one first and second comparators being connected to the detector element. Further, the at least two comparators have a logical interconnection, wherein at least a first comparator and a second comparator are connected to the inputs of an XOR gate, and each XOR gate connected to a first comparator is connected to precisely one edge-sensitive counter. Further, in at least one embodiment, an application-specific integrated circuit (ASIC) and an emitter-detector system of an X-ray CT system, including at least one circuit arrangement, are disclosed.

Description

technical field [0001] The invention relates to a circuit arrangement for counting x-ray quanta of x-ray radiation in a detector element of a detector in a radiator-detector system of an x-ray CT system, wherein the x-ray radiation comprises a plurality of X-ray quanta of energy, and the x-ray quanta collected by each detector element generate signal histories with voltage pulses of different heights related to the energy of the x-ray quanta, said signal histories may overlap, the invention also relates to a An application specific integrated circuit and a radiator-detector system. Background technique [0002] Conventional X-ray systems are generally known. It is used, for example, in medicine to carry out x-ray examinations of patients. Depending on the body part or tissue to be examined, different x-ray radiation energies are required in order to penetrate tissues of different densities, for example adipose tissue or bone. The energy of the x-ray radiation is decisive ...

Claims

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Application Information

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IPC IPC(8): G01T1/17A61B6/00A61B6/03
CPCG01T1/17
Inventor 斯蒂芬·卡普勒卡尔·斯蒂尔斯托弗
Owner SIEMENS HEALTHCARE GMBH
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