To analyze reasons of discarding as useless of ?-Se direct conversion digital flat panel detector
- VernacularTitle:直接转换非晶硒平板探测器报废原因分析
- Author:
Dengfa GAO
;
Hong JIA
;
Haiyan TONG
;
Na YANG
- Publication Type:Journal Article
- Keywords:
direct conversion;
?-Se;
digital flat panel detector;
damage point;
damage region;
discard as useless
- From:
Chinese Medical Equipment Journal
2003;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the reasons of discarding as useless of ?-Se direct conversion digital flat panel detector (?-Se FPD). Methods (1) E-COM DR-2000CTM chest system, with high frequency X-ray machine made by CPI company of Canada, the X-ray tube made by VARIAN company of America and Direct Ray-1000 ?-Se FPD made by DRC company of America. (2) 50 cases were collected rondomizedly, each had 4 pieces of chest image and were analyzed by two experienced radiologists and two technicians. Results After about 14 months with 30,000 times exposure efficacious, some damage lines and points appeared in the detector. After about 34 months with 70,000 times exposure efficacious, a damage region (area is 6.7in*0.95in ) existed, this reduced the images' quality and at the end the detector was discarded as useless. Conclusion The ?-Se FPD needs maintenance and monitoring working circumstance.
