Medical Imaging Technology
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Browsing Medical Imaging Technology by Author "Reema Abduallah Ahmad Za'roor"
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- ItemRadiation Doses and Cancer Risk Assessment for Patients Undergoing Computed Tomography Angiography Procedures in Palestine(Al-Quds University, 2022-07-25) Reema Abduallah Ahmad Za'roor; ريما عبدالله أحمد زعرورCT procedures may cause radiogenic risk because of the high radiation dose used in image acquisition, comparing to other diagnostic imaging modalities. In global studies, there was a large variation in the Effective Dose (ED) values duringcomputed tomography angiogram (CTA)procedures(2.2-24.4) mSv.The increasing use of CT scans in Palestine has spurredresearchers to do dose assessments and cancer risk studies. However, there is no previous study conducted in Palestine about estimation of radiation dose of CTA scans. Therefore, a dose assessment for CTA patients is highly recommended in Palestine. The main objective of this study is to estimate the radiation effective dose and cancer risk to adult patients (>18years old) CTA procedures, including: lower limp angiogram (LLA), pulmonary embolism angiogram (PEA), head and neck angiogram (HNA) in the selected governmental hospitals in the Palestine. A quantitative cohort retrospective design was used to conduct this study. All adult patients (>18 years old)underwent the selected CTA examinations in the chosen three governmental hospitals. Data collection was through PACS system during two months. The average effective dose was estimated by CT-EXPO softwarefor LLA, PEA and HNA was 7.2±2.9, 5.2±2 and 4.18±2 mSv, respectively, for the total study populationof the three scans ranged between 3 mSv - 11.3 mSv, which was lower than the international studies. Based on hospitals in LLA protocol, the largest value of ED was in Beit Jala Hospital (B.J.H) with 11.3±1mSv in arterial phase and 10.6 in venous phase, Palestine medical complex Hospital (P.M.C) had done only arterial phase with 7±2 mSv then Rafedia surgical Hospital (R.S.H) with 4.79 ± 1 mSv in arterial phase and 4.68±1.1 in venous phase. In PEA protocol, the highest value of ED was also in Beit Jala Hospital (B.J.H) with 7.9±0.9 mSv, Rafedia surgical Hospital (R.S.H) with 4.54±1 mSv then Palestine medical complex Hospital (P.M.C) with 4±1.9 mSv. While in HNA protocol, the largest value of ED in arterial phase was R.S.H with 5.5±1.5 mSv, B.J.H with 4.5±3 mSv then P.M.C with 3.3 ± 0.3 mSv.The overall cancer risk per 100000 procedures for all CTA scans included in the study was 39.7±15.9 for LLA, 28±11.5 for PEA and 23±11.6 for HNA.These values are considered as a low-dose risk estimates due to results derived from Hiroshima atomic bomb data that stated, effective doses ranging between 5 to 50 mSv are associated with higher chances to increase risk of cancer mortality.