Nuclear magnetic resonance coil positioning method based on passive RFID

Abstract

The invention discloses a nuclear magnetic resonance coil positioning method based on passive RFID. In the invention, signal emitting sources are respectively arranged at the corners of the operationtable. A passive RFID electronic tag is mounted on the nuclear magnetic resonance coil. When the passive RFID electronic tag T enters the functional range of the reader / writer, the passive RFID electronic tag T feeds back the radio frequency signal sent by the reader / writer; and when the passive RFID electronic tag T enters the functional range of the reader / writer, the passive RFID electronic tagT feeds back the radio frequency signal sent by the reader / writer. The relationship between the intensity of signal attenuation and the propagation distance is calculated. A coordinate system is established with the signal emitter point A as the origin. The spatial coordinates of the passive RFID tag are calculated according to the triangulation algorithm. The invention locates the nuclear magnetic resonance coil through the passive RFID and ensures that the coil is connected with the nuclear magnetic resonance system in the resonance process of the nuclear magnetic resonance imaging. Avoid system failure due to the operator's negligence that the coil is not plugged into the system and prevent injury to the patient. Through the calculation of the propagation model and the application of triangular positioning algorithm, the positioning accuracy of passive RFID is improved.

Description

Technical field [0001] The invention belongs to the technical field of software development, and particularly relates to a passive RFID-based nuclear magnetic resonance coil positioning method. Background technique [0002] Magnetic resonance imaging is a relatively new medical imaging technology that has not been officially used in clinical practice until 1982. It uses static magnetic field and radio frequency magnetic field to image human tissue. In the imaging process, neither electron ionizing radiation nor contrast agent is used to obtain high-contrast clear images. It can reflect human organ abnormalities and early pathological changes from the inside of human molecules. It is superior to X-ray CT in many places. Although X-CT solves the problem of human body impact overlap, the image provided is still a spatial distribution image of tissue absorption of X-rays, and cannot provide information on the physiological state of human organs. When the absorption coefficient of ...

AI Technical Summary

Problems solved by technology

[0003] The nuclear magnetic resonance coil is an important part of the nuclear magnetic resonance system, and it usually plays the role of transmitting the pulse machine to receive the signal; in the workflow, the nuclear magnetic resonance coil needs to be connected to the system to be recognized and run normally, but due to the negligence of the operating physician, Coils are sometimes misplaced on the console without being plugged into the system, which can lead to system failure and patient injury

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