摘要
目的研究受检者在全身18F-FDG PET/CT显像中所受到的辐射有效剂量。方法选取58例全身PET/CT显像的受检者,在自动曝光技术下通过公式估算出CT和PET的全身有效剂量,并将估算结果与传统放射检查(常规CT、X线、99mTC核素显像)相比较。结果单次全身PET/CT显像受检者所接受的CT有效剂量为2.4~6.8mSv,平均(4.3±2.2)mSv,PET有效剂量为4.2~6.3 mSv,平均(5.5±1.5)mSv;PET/CT总有效剂量为6.6~13.1mSv,平均(9.8±3.3)mSv。其辐射总有效剂量与一次腹部或盆部常规CT扫描所产生的辐射剂量相当。结论单次全身PET/CT检查受检者所接受的辐射剂量是安全的。
Objective To evaluate the effective radiation dose in patients undergoing whole- body 18F_FDG PET/CT examinations. Methods Whole-body PET/CT was performed in 58 sub- jects. The effective radiation dose of PET/CT was estimated by using the conversion formula with automatic exposure control technique. The estimated results were compared with conventional ra- diography （conventional CT,X-line or 99mwc scintigraphy）. Results The mean dose was （4. 3± 2.2）mSv（range,2.4 to 6.8 mSv） in CT and （5.5±1.5）mSv（ range,4.2 to 6.3 mSv） in PET at one time. The total effective dose of PET/CT examinations was （9.8 ± 3.3）mSv （ range, 6.6 to 13.1 mSv）. Its total effective radiation dose equivalent to a conventional CT scan of belly or basin produced dose. Conclusion One-time whole-body PET/CT is safe for subjects due to the low radiation dose.
出处
《南昌大学学报（医学版）》
CAS
2013年第10期44-46,共3页
Journal of Nanchang University：Medical Sciences
