The effective dose result of 18F-FDG PET-CT paediatric patients

10th International Seminar on Medical Physics; 1st AMDI International Oncology Symposium

物理学;医药卫生

Hussin, D.^1 ; Said, M.A.^2 ; Ali, N.S.^2 ; Tajuddin, A.A.^1 ; Zainon, R.^1

Kluster Oncology Science and Radiology, Advanced Medical Dental Institute, Universiti Sains Malaysia (USM), Bertam, Penang, Malaysia^1

Department of Nuclear Medicine, National Cancer Institute, No 4 Jalan P7, Presint 7, Putrajaya, Malaysia^2

关键词: Automatic exposure controls;    CT dose reduction;    CT scanners;    Effective dose;    Fdg-pet-ct;    High exposures;    International commission on radiological protections;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/851/1/012004/pdf
DOI  :  10.1088/1742-6596/851/1/012004

学科分类：卫生学

来源: IOP

【 摘 要 】

Paediatric patient received high exposure from both CT and PET examination. Automatic Exposure Control (AEC) is important in CT dose reduction. This study aimed to compare the effective dose obtained from PET-CT scanner with and without the use of AEC function. In this study, 68 patients underwent PET-CT examination without the use of AEC function, while 25 patients used the AEC function during the examination. Patients involved in this study were between 2 to 15 years old with varies of malignancies and epilepsy diseases. The effective dose obtained from PET and CT examinations was calculated based on recommendation from International Commission on Radiological Protection (ICRP) Publication 106 and ICRP publication 102. The outcome of this study shows that the radiation dose was reduced up to 20% with the use of AEC function. The mean average of effective dose result obtained from PET and CT examinations without the use of AEC and AEC function were found to be as 6.67 mSv, 6.77 mSv, 6.03mSv and 4.96 mSv respectively. Where total effective dose result of PET-CT with non-AEC and AEC were found to be 13.44 mSv and 10.99 mSv respectively. Conclusion of this study is, the installation of AEC function in PET-CT machine does play important role in CT dose reduction especially for paediatric patient.