Page 61 - ARNM-2-2

Advances in Radiotherapy &

Nuclear Medicine

ORIGINAL RESEARCH ARTICLE
Investigation of the optimal tube voltage

kV exposure parameters for general X-ray of
dental cone-beam computed tomography: A

cephalometric view

2,3
2
James Anthony Rabba * , Godwin Irinam Efenji , Felix Omachoko Uloko ,
1,2
1
4,5
1
Dauda Biodun Amuda , Hanis Arina Jaafar , Fatanah Mohamad Suhaimi ,
and Noor Diyana Osman 1
1 Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@Bertam, Kepala Batas,
Penang, Malaysia
2 Department of Physics, Federal University Lokoja, PMB Lokoja, Kogi State, Nigeria
3 School of Physics, Universiti Sains Malaysia, Penang, Malaysia
4 Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Ogbomoso,
Oyo State, Nigeria
5 Department of Radiology, Ladoke Akintola University of Technology Teaching Hospital, Ogbomoso,
Oyo State, Nigeria

Abstract

This study aims to investigate and optimize the effect of different exposure parameters
*Corresponding author: on the reduction of noise and radiation dose and to find the optimal balance among tube
James Anthony Rabba voltage, tube current, and exposure time for the latest-generation cone-beam computed
(james.rabba@fulokoja.edu.ng)
tomography system (CBCT) at Advanced Medical and Dental Institute, Universiti Sains
Citation: Rabba JA, Efenji GI, Malaysia, using the dose area product (DAP) meter. The DAP meter was attached to the
Uloko FO, et al. Investigation of the X-ray detector of the CBCT device to cover the entire irradiated area and then connected
optimal tube voltage kV exposure
parameters for general X-ray to a Raysafe electrometer. The DAP meter was scanned with the following exposure
of dental cone-beam computed parameter: constant tube voltage of 70 kV with a varying tube current ranging from
tomography: A cephalometric 5 mA – 16 mA and then at a constant tube current of 10mA and a varying tube voltage
view. Adv Radiother Nucl Med.
2024;2(2):2972. ranging from 60 kV – 80 kV. For each scanning protocol, the noise was determined. At
doi: 10.36922/arnm.2972 constant tube voltage and varying tube current, the noise level ranged from 41.99 – 82.16,
Received: February 20, 2024 while at constant tube current and varying tube voltage, the noise level ranged from
50.66 – 60.76 with equal exposure time. A 0.09% increase in noise was observed when
Accepted: May 30, 2024
the tube voltage was varied. Therefore, low noise protocols should consist of a reduction
Published Online: June 19, 2024 in the tube current setting rather than a reduction in peak voltage (kVp), as this would
Copyright: © 2024 Author(s). result in a smaller level of noise and consequently less quality degradation in the image.
This is an Open-Access article
distributed under the terms of the
Creative Commons Attribution Keywords: Noise; Dose area product; Cone-beam computed tomography; Image quality;
License, permitting distribution, X-ray; Cephalometry
and reproduction in any medium,
provided the original work is
properly cited.
Publisher’s Note: AccScience
Publishing remains neutral with 1. Introduction
regard to jurisdictional claims in
published maps and institutional Sir Wilhelm Conrad Roentgen’s discovery of X-rays in 1895 marked a turning point
affiliations. in medical history. However, digital imaging has largely replaced the use of X-rays in

Volume 2 Issue 2 (2024) 1 doi: 10.36922/arnm.2972