Electronic paramagnetic resonance measurement scheme of personal radiation dose

A technology of electron paramagnetic resonance and radiation dose, which is applied in the field of technical solutions, can solve problems such as failure to realize the solution, and achieve the effect of easy realization, uniform area, and uniform scanning of the magnetic field

Inactive Publication Date: 2003-05-14
RADIOLOGY INST ACAD OF MILITARY MEDICINE SCI PLA
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  • Electronic paramagnetic resonance measurement scheme of personal radiation dose
  • Electronic paramagnetic resonance measurement scheme of personal radiation dose

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[0011] Further illustrate the preferred scheme of realizing the present invention below in conjunction with accompanying drawing

[0012] The operating frequency is 9.5GHz. Detection sample resonator 1 is TE 111 type. The direction of the magnetic field is horizontal. The constant and stable magnetic induction established by the permanent magnet 2 is 0.335 Tesla. The scanning magnetic field established by the electromagnet 3 is adjustable from 0 to 0.015 Tesla. The distance between the poles of the magnet is 90mm. The diameter of the magnet pole cap 5 is 80 millimeters. During detection, the face of the human body is positioned between the two magnetic poles, so that the magnetic pole caps 5 on both sides are stuck on the outside of the face at the front of the gums. The anterior teeth are located in the geometric central area between the two magnetic poles. The in-body EPR measurement is realized on the detection hole of the resonant cavity 1 with the upper teeth.

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Abstract

The present invention relates to one kind of electronic paramagnetic resonance measurement scheme of personal radiation dose. It adopts horizontal working magnetic field and x band microwave work frequency, and during detection, magnetic poles of magnet are made to clamp the testee's face across the gum and the upper teech bite into rectangular detection hole in the front end cap of the resonant cavity. This mode ensures the relatively high detection sensitivity. The oral cavity area is held in relatively small magnet and this reaches high homogeneity of magnetic field and high working efficiency of magnetic field. The measurement method is practical.

Description

Technical field: [0001] The invention relates to a technical solution. In particular, it relates to an implementation of in vivo measurement of personnel radiation dose by electron paramagnetic resonance. [0002] Electron Paramagnetic Resonance (abbreviated as EPR or ESR) is a technique used to detect the nature and content of paramagnetic substances containing uncoupled electrons in a sample. It has been widely used in many fields such as physics, chemistry, geology, materials and biomedicine. In vitro conditions, the use of EPR to detect tooth dose has also been applied. Background technique: [0003] Radiation sickness occurs when personnel are exposed to accidental ionizing radiation doses exceeding a certain level. Effective medical treatment of this type of radiation sickness depends on the early and accurate measurement of the radiation dose received by the irradiated person. Ionizing radiation can induce paramagnetic substances such as free radicals in many tiss...

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Application Information

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IPC IPC(8): A61B6/14G01N24/10G01R33/60G01T1/16
Inventor 吴可孙存普丛建波先宏
Owner RADIOLOGY INST ACAD OF MILITARY MEDICINE SCI PLA
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