DOI : https://doi.org/10.18517/ijaseit.15.3.20630

Evaluation of the Typical Dose Values in Patients Undergoing CT Scan Examinations at Andalas University Hospital

Ramacos Fardela (1), Rani Delvihardini (2), Ida Bagus Gede Putra Pratama (3), Dian Milvita (4), Amel Oktavia (5)
(1) Department of Physics, Faculty of Mathematics and Natural Sciences, Andalas University, Padang, Indonesia
(2) Department of Physics, Faculty of Mathematics and Natural Sciences, Andalas University, Padang, Indonesia
(3) Nuclear Energy Regulatory Agency, Jakarta, Indonesia
(4) Department of Physics, Faculty of Mathematics and Natural Sciences, Andalas University, Padang, Indonesia
(5) Radiology Installation of Andalas University Hospital, Padang, Indonesia
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[1]
R. Fardela, R. Delvihardini, I. B. G. P. Pratama, D. Milvita, and A. Oktavia, “Evaluation of the Typical Dose Values in Patients Undergoing CT Scan Examinations at Andalas University Hospital”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 15, no. 3, pp. 693–700, Jun. 2025.
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In the medical field, X-rays are used in diagnostic radiology and radiotherapy. The Computed Tomography Scanner (CT scan) is a diagnostic radiology modality that employs X-rays. It is crucial to protect patients from excessive radiation exposure by optimizing measures, as CT scans deliver higher doses than other modalities. This study aims to determine, compare, and evaluate typical dose values at Andalas University (Unand) Hospital with Sumatra Regional, National, and several other countries' Diagnostic Reference Levels (DRLs). It also examines the correlation between Dose Length Product (DLP) and Computed Tomography Dose Index Volume (CTDIVol) concerning exposure parameters (mAs). Data from 225 adult patients undergoing non-contrast CT scans of the head, chest, abdomen, and contrast-enhanced abdomen at Unand Hospital were used to determine typical dose values from the median (Q2). The findings indicate that non-contrast head CT scans at Unand Hospital yielded the highest CTDIVol and DLP values. The non-contrast abdominal CT scan had the lowest DLP value, while the contrast-enhanced abdominal CT scan had the lowest CTDIVol value. The non-contrast head and contrast-enhanced abdominal CT scans exceeded Sumatra Regional and National DRLs, while the typical dose value for non-contrast abdominal CT scans at Unand Hospital did not exceed these DRLs. The hospital's typical CTDIVol value is relatively lower, whereas the DLP is relatively higher compared to DRL values of several countries. The study shows a strong correlation between CTDIVol and DLP values with tube current.

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