Study of Image Quality and Radiation Dose of DynaCT on Anthropomorphic Phantom
- VernacularTitle:采用体模评价DynaCT成像质量和辐射剂量
- Author:
Mei BAI
;
Bin LIU
- Publication Type:Journal Article
- Keywords:
C-arm CT;
CT imaging technology;
multi-slice spiral CT;
radiation dose;
image quality
- From:
Chinese Medical Equipment Journal
2004;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the dose and image quality using a C-arm CT (DynaCT) system and compare the difference of image quality and radiation dose between DynaCT and Multi slice CT (MSCT). Methods Effective doses were measured from an anthropomorphic phantom with embedded thermoluminescence dosimeters (TLDs).For DynaCT,automatic exposure control (AEC) and high-quality (20 s rotation time) scans were used. For MSCT,scanning protocols for head were examined with conventional exposure conditions. Catphan phantom(Phantom Lab,USA) was used to evaluate the image quality for DynaCT and MSCT. Results For DynaCT,the effective doses from head scanning were 1.10 mSv; for MSCT,the effective doses from head scanning were 2.07 mSv,and there was a significant difference of organ dose between DynaCT and MSCT(P
