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Portable lung counting device

A lung counting, portable technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of long counting time, inability to screen the contamination degree of personnel, inability to quickly detect radiation dose, etc., and achieve light weight and portability and operation, small size effect

Inactive Publication Date: 2014-06-25
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Description
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AI Technical Summary

Problems solved by technology

These limitations make this method only suitable for measurement in fixed places, and due to the long counting time, it cannot quickly detect the radiation dose in human lungs
The above-mentioned technical problems make this lung counting method unable to quickly screen the contamination degree of personnel on the spot when a nuclear and radiation emergency occurs

Method used

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Embodiment Construction

[0020] The present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to figure 1 , a portable lung counting device, the hardware of the device is composed of a small support device, a detector, a digital multi-channel analyzer, and a communication interface. The digital gamma energy spectrum acquisition system is composed of NaI(Tl) detector, preamplifier, main amplifier, digital multi-channel analyzer and power supply. A detector, a preamplifier, a main amplifier, a digital multi-channel analyzer, and a communication interface are connected in sequence.

[0022] refer to figure 2 , the detector realizes the conversion of gamma radiation signal to electric pulse signal. Among them, the NaI(Tl) detector is composed of NaI(Tl) scintillation crystal, light guide, and photomultiplier tube to realize the conversion of current gamma radiation signal to electric pulse signal. The high-voltage p...

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Abstract

The invention discloses a portable lung counting device. The device consists of a small supporting device, a detector, a digital multi-channel analyzer, a high-voltage power supply, a low-voltage power supply, a communication interface and lung counting analysis software. The detector is a NaI(Tl) detector, so that the lung counting device has the advantages of small volume, light weight and high detecting efficiency and is convenient to carry and operate. The lung counting analysis software can be used for background rejection and committed effective dose calculation. The device can be used for quantitatively detecting the activity of gamma radioactive nuclides absorbed into the lung of a person on a nuclear and radiation emergency site and giving the committed effective dose, and provides a reliable data basis for field medical diagnosis and treatment.

Description

technical field [0001] The present invention relates to a portable lung counting device. Background technique [0002] Some radionuclides, such as americium and plutonium, will stay in the lungs for weeks, months or even years after inhalation, and are not easily detected in urine. Therefore, counters are often used to directly measure radionuclides in the lungs The method of gamma rays emitted is used to estimate the deposition of these nuclides in the lungs, and the intake and dose can be estimated accordingly. [0003] At present, the known lung counting method needs to be carried out in a detection room shielded by background steel, and the detectors mostly use high-purity germanium detectors. During the measurement, the subject is required to lie on a chair and point the detector probe at the human lungs for gamma radiation measurement. The measurement time is generally about 30 minutes. After the measurement is completed, the measurement results are obtained by analy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/161
Inventor 王磊庹先国袁勇杨国山潘洁成毅曲德成王琳肖魏峰林木唐应兵颜瑜成
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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