Evaluasi Nilai Diagnostic Reference Level (DRL) pada Pemeriksaan CT Scan Abdomen 3 Fase di Rumah Sakit Umum Pusat Persahabatan

Abstract

Background: Diagnostic Reference Levels (DRL) are stated in CTDI and DLP hence due to an accurate

parameter selection, good control practices and the use of appropriate DRL, they will significantly reduce

the radiation dose to the patient by more than 50%. In addition to DRL, the value of estimated effective

dose and estimated cancer risk is as additional information to assist in several aspects of justification and

optimization as well as to become an educational device that increases the awareness of the risk of cancer.

This research also aims to obtain DRL value for a 3-phase abdominal CT scan because Indonesia does not

yet have a DRL for a 3-phase abdominal CT scan.

Methods: This research uses an observational approach with descriptive quantitative methods using

secondary data. As for the data analyzed herein, they involve the patient information and the radiation dose

received during a 3-phase abdominal CT scan obtained from the dose report on the CT Scan machine

workstation. Meanwhile, the research population included all the patients who underwent a 3-phase

abdominal CT scan undertaken at Radiology Installation of Persahabatan Central General Hospital starting

from January up to March 2024 with a total population of 40 patients. The number of samples used was 30

samples. The collected data are processed and analyzed using a descriptive frequency test and then

compared with DRLs from the other countries and Abdominal I-DRL, AbdoPelvis and Whole Abdomen.

Furthermore, it is then calculated to obtain the estimated effective dose and cancer risk which is presented

in tabular form.

Results The results of this research suggests that DRL value at CTDI Persahabatan Central General

Hospital is lower than that in the other countries and below Abdominal I-DRL, AbdoPelvis and Whole

Abdomen, and DLP value is much higher than that in the other countries and above Abdominal I-DRL

DLP, AbdoPelvis and Whole Abdomen.