Purpose
The purpose of the study is to determine the cancer risk associated with radiation exposure for the patients undergoing repeat or multiple brain CT scan studies
Methods and materials
Study design and setting
Design: cross-sectional retrospective study.
Setting: Medical Diagnostic Imaging department, university hospital, Sharjah, UAE
Data collected for patients who visit the hospital between 2013-2018. The CT machine is 128-multislice CT (MSCT) scanner from Siemens “SOMATOM Definition AS”. Research approval was obtained from the hospital research ethics committee, and the consent waived for retrospective medical records review.
Patient selection
Patients underwent multiple CT head imaging, both genders with age under 60-year-old and a history of head trauma or brain injuries were included in...
Results
12 patients underwent multiple brain CT scan during the study period. Patients in this study were 8 males and 4 females within a median age of 26.5(IQR 9.8-37.3). The minimum age of patients was one year, and the maximum is 50 years. The indications/diagnosis of CT request varied between fractures (3 patients), chronic/post-traumatic (3 patients), intracranial haemorrhage (1 patient), stroke/ infarction (3 patients), and cranial lesion (2 patients), Table 1.
The number of CT scans and slice thickness done among the studied patients subjected to...
Conclusion
The median of the effective dose in this study was 3.93 mSv. An average of 0.056 mSv effective dose can lead to a risk of developing cancer during a patient life
The research results demonstrate that cancer risk positively correlates with the number of CT scans, total mAs, CTDIvol and DLP. Using high values of mAs, CTDIvol and DLP will result in high risk of developing cancer despite the age. Moreover, when the patient undergoes more than two CT scans the cancer risk will increase...
Personal information and conflict of interest
M. M. Abuzaid; Sharjah/AE - Author at University of Sharjah W. Elshami; Sharjah/AE - Advisory Board at University of Sharjah Z. Noorajan; Sharjah/AE - nothing to disclose B. Bukamal; Sharjah/AE - nothing to disclose L. Alawnih; Sharjah/AE - nothing to disclose W. Sabeel; Manama/BH - nothing to disclose
References
Li X, Samei E, Segars WP, Sturgeon GM, Colsher JG, Toncheva G, et al. Patient-specific radiation dose and cancer risk estimation in CT: Part II. Application to patients. Med Phys. 2011;38(1):408–19.
Sodickson A, Baeyens PF, Andriole KP, Prevedello LM, Nawfel RD, Hanson R, et al. Recurrent CT, Cumulative Radiation Exposure, and Associated Radiation-induced Cancer Risks from CT of Adults. Radiology. 2009;251(1):175–84.
McKenney S, Gingold E, Zaidi H. Gonadal shielding should be discontinued for most diagnostic imaging exams. Med Phys. 2019;46(3):1111–4.
Mohamed M abuzaid, Wiam Elshami...