A Review on Diagnostic Reference Levels for Adult Patients Undergoing Chest (Coronary Angiography) Computed Tomography Scan in North-East India

Abstract

In the radiological department, the computed tomography (CT) scan process has become a greater radiation dosage that contributes to all medical X-ray treatments. Many studies throughout the world have found that CT accounts for just 5% of all operations conducted yet accounts for 34% of yearly radiation exposures in all medical X-ray treatments. Similarly, other studies have found that CT accounts for 17% of all operations conducted worldwide but accounts for 49% of total yearly doses in all medical X-ray treatments. Because diagnostic reference levels (DRLs) are one of the ways of optimizing a dose in a CT procedure, the goal of this review is to provide a DRLs for adults who undergo chest and abdomen CT scan examinations in northern India, based on research for this region and comparing with international values to see if better optimization protocol is being practiced. DRLs for the chest are 18.35mGy for CT dose index volume (CTDIvol) and 765 mGy.cm for dose length product (DLP), according to this review, while DRLs for the abdomen are 18.25 mGy and 1870.75 mGy.cm for CTDI (vol) and DLP, respectively. As a result, all of the DRLs examined had greater values than the international values compared, with the exception of CTDI (vol) of International Commission on Radiological Protection 2007 publications. CT technology is in desperate need of an update. In the northern region, optimizing methods, including exposure and technical parameter selection, should reduce dose fluctuations.