Design and improvement of medical radioisotope dose calibrator
10.3760/cma.j.issn.1673-4181.2009.02.007
- VernacularTitle:医用核素活度计的设计与改进
- Author:
Jian SHAN
;
Xiuliang ZHAO
;
Yuexiang TANG
- Publication Type:Journal Article
- Keywords:
Badioisotope dose calibrator;
Voltage-to-frequency converter;
Visual instrument
- From:
International Journal of Biomedical Engineering
2009;32(2):88-91
- CountryChina
- Language:Chinese
-
Abstract:
Objective To improve the hardware of a medical radioisotope dose calibration system base on LabVIEW platform.Methods Hiish performance voltage-frequency-converter VFC32 was applied to realize hardware circuit design of medical radioisotope dose calibrator,and the function of the circuit wag analyzed.The output voltage signal from the calibrator ionization chamber was processed by the designed circuit.The output frequency signal from the circuit was obtained by USB-6009 DAQ and was then processed by virtual instrument designed using LabVIEW 8.0.Results Experimental data graphs indicated that the improved system had a better linearity in the low and medium frequency band.Conclusion The redesigned radioisotope dose calibrator has advantages in improving measuring accuracy,measuring range,feeble-minded detection limit and so on.
