Radiation Protection of Low Dose CT Scanning in Orbit
- VernacularTitle:眼眶部低剂量CT扫描的辐射防护
- Author:
Gang WANG
;
Yan BAI
;
Jiansi XIANG
;
Shuqing ZHENG
- Publication Type:Journal Article
- Keywords:
low dose;
orbit;
radiation protection;
tomography,X-ray computed
- From:
Journal of Practical Radiology
2001;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study radiation protection of low dose CT scanning in orbit. Methods 126 cases of orbital disease were scanned by original standard parameter (130 kV,100 mA) and two different low dose parameters (130 kV,50 mA and 30 mA) respectively. All the images were reconstructed by different Kernels. The image quality and difference of the CTDIw (weighted CT dose index) of each group were compared. Results CTDIw was 30% of that of the conventional scanning and least when 130 kV 30 mA,but the difference of the image quality compared with that by conventional scanning was highly statistical significance (P0.05). Conclusion Low dose CT scanning (50mA) in orbit not only can assure the image quality but also can decrease the radiation dose.
