Coincidence event screening method and apparatus for full-digital PET

An all-digital and event-based technology, applied in the medical field, can solve the problems of high processing software pressure, high communication link pressure, and long processing time, achieving high calculation speed and accuracy, reducing time consumption, and low hardware maintenance costs Effect
CN107908362AInactive Publication Date: 2018-04-13RAYSOLUTION DIGITAL MEDICAL IMAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
RAYSOLUTION DIGITAL MEDICAL IMAGING CO LTD
Publication Date
2018-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is suitable for the technical field of medical treatment and provides a coincidence event screening method and apparatus for full-digital PET. The method comprises the steps of calculating energy information of events, and sorting the events according to time; performing position and time coincidence judgment on the ith and jth events, and performing energy screening on two paired events with position and time coincidence according to the energy information of the events; when the energy screening of any of the two paired events with the position and time coincidence is not met,re-determining i and j, and performing the position and time coincidence judgment on the ith and jth events; and when the energy screening of the two paired events with the position and time coincidence is met, marking coincidence information of the two paired events. The coincidence events of the full-digital PET are screened by adopting software; threshold data subjected to coincidence screeningcalculation can be adjusted according to demands or different test conditions; and feedback optimization can be performed according to a result in a specific test process.
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Description

technical field

[0001] The invention belongs to the field of medical technology, and in particular relates to a method and device for screening coincident events of all-digital PET. Background technique

[0002] Positron Emission Tomography (PET) system is an advanced molecular imaging diagnostic equipment in today's medical field. Because it uses radionuclides as tracers, it is also called nuclear medicine equipment. The PET system is currently widely used in the detection of early tumor lesions, the evaluation of the recovery effect of radiotherapy and chemotherapy, and the examination of diseases in the heart, brain and nerve systems, and has irreplaceable advantages in some diagnostic fields.

[0003] In principle, PET injects the FDG label containing positron nuclides as a tracer into the subject, and the tracer will diffuse into various tissues along with the blood and participate in the metabolic activities of the human body, and the positron nuclide will be released....

Claims

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