Assessment of Radiation Dose Received By Patient During CT urography

Abstract

Radiography has major role of diagnostic method in medical field. Urography provides the radiologist with useful detailed information. However, it is the responsibility of radiologist and technologist to determine scanning technique factor that provide balance between image quality and radiation dose and share in keeping patient radiation exposure at lowest as possible. The objective of this study to assess radiation dose from CT and estimate radiation risk for patient during CTU.The patient radiation dose value from this study 3647.81±950.34mGy/cm (DLP), 69.47±14.81mGy(CTDIvol), Effective dose54.72±14.26mSv and cancer probability per million(28.03) ureters and (27.05)for testiles. Radiation dose can vary considerably between scanner and between institutions. Clinical dose are reported as the dose to standard dosimetry phantom. However due to large variation in patient size these dose may not estimate accurately the deliver to patient during a particular exam.In this study the radiation dose isconsidered high compared with previous studies, this may be due to scanner, or protocol used. A patient radiation risk for particular exam is proportional to the dose delivered during exam.