A raw event detection module of an all-digital processing device

An all-digital, processing device technology, applied in the fields of radiological diagnosis instruments, medical science, diagnosis, etc., which can solve the problems of high design and production cost, long production cycle, and complicated component connection.

Inactive Publication Date: 2011-12-21
JIANGSU SINOWAYS (ZHONGHUI) MEDICAL TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method is to use multiple separate components to realize these functions, which is bulky, the connection between components is complicated, the detection and debugging are cumbersome, not only the cost is high, but the overall reliability of the system is poor
Due to the single and fixed functions of these separated co...

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  • A raw event detection module of an all-digital processing device
  • A raw event detection module of an all-digital processing device

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Embodiment Construction

[0024] Such as figure 1 As shown, the original event detection module includes position signal baseline restorer, position signal accumulation restorer, position signal digital integrator, time signal baseline restorer, time signal accumulation restorer, arrival time detector, event time calculator, X position Signal baseline restorer, X position signal accumulation restorer, X position signal digital integrator, Y position signal baseline restorer, Y position signal accumulation restorer, Y position signal digital integrator, event energy calculator, event position calculator, Crystal lookup tables, energy discriminators, and raw event word stitchers.

[0025] The position signal baseline restorer, the time signal baseline restorer, the X position signal baseline restorer and the Y position signal baseline restorer are respectively connected to corresponding detectors through A / D converters.

[0026] The position signal baseline restorer is connected with the position signal...

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Abstract

The invention discloses a primitive event detection module for an all-digital processing unit, relating to the technical field of medical imaging, in particular to the field of positron emission tomography. The primitive event detection module disclosed by the invention is provided with a device, which can judge whether the position and time signal of a gamma photo-event captured by detectors belongs to a valid event by using arrival time triggering and energy discrimination, and if so, latches the position and time signal of the gamma photo-event according to the format of the primitive gamma photo-event characters and outputs the position and time signal. The invention can satisfy the demands for the all-digital processing unit in an all-digital processing positron emission tomography electronic system.

Description

technical field [0001] The invention relates to the technical field of medical imaging, in particular to the field of positron emission tomography. Background technique [0002] Positron Emission Tomography (PET) is a nuclear medicine imaging technique. It can perform real-time, non-invasive and dynamic in vivo imaging of functional information of human tissues at the molecular level, such as physiological and pathological changes, and can be used in early detection, diagnosis, grading, treatment plan formulation, curative effect evaluation and tracking of cancer, etc. , recurrence detection and other aspects have an irreplaceable role. [0003] The basic principle of PET imaging is: injecting radioactive isotopes (such as F 18 etc.) labeled drugs that reach the internal organs and tissues of the human body. Radioactive isotopes release beta particles as they decay. After the beta particle is annihilated in the human body, a pair of gamma photons with opposite directions...

Claims

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Application Information

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IPC IPC(8): A61B6/02
Inventor 居小平张辉王涛
Owner JIANGSU SINOWAYS (ZHONGHUI) MEDICAL TECH CO LTD
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