Assessment of patient radiation dose in dual-phase abdominopelvic computed tomography

Background: computed tomography (ct) is a highly effective imaging technique for abdominopelvic pathologies. nonetheless, radiation concerns arise due to patients receiving a significant effective dose (ed). thus, patient dose evaluation is critical to ensure that benefits compensate for the projected cancer risk. the current study aimed to assess abdominopelvic ct radiation exposure. material and methods: a cross-sectional analytical design was conducted for 130 abdominopelvic ct procedures. the waza-ari version 2 ct dosimetry system, which is web-based, open monte carlo simulation software for ct dose computations was used to calculate organ doses. lifetime attributable risk (lar) of cancer induction was calculated for dual-phase abdominopelvic ct through the website “xrayrisk.com”. results: results revealed that the mean ed was slightly lower in females compared to males (13.9±2.9 msv vs. 15.5±2.7 msv). the mean eds for male patients in the arterial and venous phases were 6.2±1.08 msv and 9.3±1.62, respectively, while the corresponding mean eds for female patients were 5.56±1.16 msv and 8.34±1.74. the highest organ equivalent doses for both genders and among all exams were gonads (males 32.55, females 28.76 msv); small intestine (males 30.26, females 26.66 msv); colon (males 29.79, females 26.33 msv), and stomach (males 28.55, females 25.23 msv). conclusion: variations among organ doses and assumptions regarding negligible risk of malignancy inform current hospital policy. our findings suggest that achieving the balance between diagnostic benefits and radiation risk requires careful attention.