Tracking method based on positioning monitoring system

Abstract

The invention relates a tracking method( / b) based on positioning monitoring system in the field of measuring technology (b), comprising: a capsule inside the body, a data recorder, a radioactive ray prober, and a data processor, wherein the capsule has three radioactive markers which emit positive electrons and have annihilation radiation with peripheral negative electrons. When positive and negative electrons disappear, two Gamma (r) photons of equal energy are emitted in opposite directions. As the radioactive prober detects the two Gamma (r) photons, the radioactive prober produces respectively two timing pulses, and then transmits the two timing pulses and coincidence circuits to the data processor after storing the two timing pulses and the coincidence circuits. The data processor conducts coincidence event selection between the two Gamma (r) photons by means of a tracking algorithm in accordance with coincidence event, calculates a focal aggregation position of true coincidence and lower coincidence circuits, and locates the position of the capsule inside the body. The tracking method of the invention locates can accurately the position of a capsule inside stomach and intestine based on radioactive markers.

Description

technical field [0001] The invention relates to a method in the technical field of measurement, in particular to a tracking method based on a positioning monitoring system. Background technique [0002] Gastrointestinal disorders such as gastroparesis, constipation, irritable bowel syndrome, and functional dyspepsia affect about a third of people. How to detect gastrointestinal diseases has become a research hotspot among scholars today. At present, the clinical detection methods of gastrointestinal diseases mainly include manometry, defecation contrast, scintigraphy and so on. Manometry is to insert a catheter equipped with a miniature pressure sensor into the human gastrointestinal tract from the anus or oral cavity to measure the pressure of the gastrointestinal tract. It causes great distress to the human body and increases the chances of intestinal perforation and cross-infection. Different doctors have different judgments on the results of defecation contrast, and t...

AI Technical Summary

Problems solved by technology

However, this technology has the following disadvantages: 1) This technology uses SPECT to collect front and side images of the human abdomen, but the imaging of SPECT is not clear enough, which brings great difficulties to the later image processing and precise positioning; 2) After the remote control capsule enters the small intestine of the human body , the image is collected every 5 minutes, the collection frequency is low, and the precise positioning of the capsule cannot be realized; 3) The capsule moves forward by the peristalsis of the gastrointestinal tract. Generally, the residence time of the capsule in the human body is about ten hours, while SPECT Human body images are collected every 5 minutes, and each collection lasts for 5 seconds, so the image data of the entire digestive tract is huge, and it is impossible to realize real-time tracking and positioning of capsules

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