Consistency of CT KUB radiation dose and exposure parameters in King Abdulaziz Medical City in Jeddah : quality assessment

Abstract EN

Computed Tomography (CT) is a type of Medical Imaging that uses X-ray to generate cross-sectional images of the body with an effective dose that is higher than the dose of conventional radiography.

For instance, the radiation dose for Kidney, Ureter, and Bladder (KUB) in conventional radiography is 0.7mSv, whereas, in the CT scan is 10mSv.

Therefore, this study aimed to evaluate the patient radiation dose delivered in unenhanced CT-KUB examinations using two CT machines in compliance with the American College of Radiology (ACR) standards.

This was a retrospective, cross-sectional study of all patients who had unenhanced CT-KUB examinations in King Abdulaziz Medical City in Jeddah between January 1st and June 30th, 2018.

A total of 264 patients were included in the study.

The mean CTDIvol, DLP, Time (s), pitch and effective dose were significantly different in the CT machines with a p-value between 0.004-<0.001.

Both CT machines were within the ACR standards range of 10mSv.

There was a positive strong correlation between the BMI (29.6 kg/m2) and the effective dose with p-value=<001.

The study further revealed that radiation doses delivered by the two CT scanners are compliant with the ACR standards.-