Published November 2021 | Version v1
Journal article Metadata-only

Comparison of radiation dose and image quality in head CT scans among multidetector CT scanners

Creators

  • 1. Medical Diagnostic Imaging Department, College of Health Sciences, University of Sharjah, Sharjah (United Arab Emirates)
  • 2. Radiology and Medical Imaging Department, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Alkharj (Saudi Arabia)
  • 3. Department of Physics, University of Surery, Guildford, Surrey GU2 7XH (United Kingdom)
  • 4. Sunway University, Centre for Applied Physics and Radiation Technologies, Jalan Universiti, 46150 PJ (Malaysia)

Description

The present study compares three different multidetector CT (MDCT) scanners for routine brain imaging in terms of image quality and radiation doses. The volume CT dose index (CTDIvol), dose-length product (DLP), and effective dose (E) were calculated. Subjective image assessment was obtained based on a scale ranging from 1 (unacceptable) to 5 (optimum). All images scored 3.5 or over, with the 160-slice MDCT images being favoured. For the 4-, 16- and 160-slice MDCT scanners, the respective median values for CTDIvol were 57 mGy, 41 mGy, and 28 mGy; DLP values were 901 mGy.cm, 680 mGy.cm, and 551 mGy.cm; and effective doses were 2 mSv, 1.5 mSv, and 1 mSv, respectively. Compared to the 160-slice MDCT, the dose values for the 4- and 16-slice units were significantly greater. In practice, the CT modality used must be carefully selected to avoid elevated radiation doses and maintain image quality. (authors)

Availability note (English)

Available from doi: http://dx.doi.org/10.1093/rpd/ncab125

Additional details

Identifiers

DOI
10.1093/rpd/ncab125;

Publishing Information

Journal Title
Radiation Protection Dosimetry
Journal Volume
196
Journal Issue
1-2
Journal Page Range
p. 10-16
ISSN
0144-8420

INIS

Country of Publication
United Kingdom
Country of Input or Organization
France
INIS RN
53001934
Subject category
S62: RADIOLOGY AND NUCLEAR MEDICINE;
Descriptors DEI
BRAIN; COMPUTERIZED TOMOGRAPHY; EFFECTIVE RADIATION DOSES; IMAGE PROCESSING; IMAGES
Descriptors DEC
BODY; CENTRAL NERVOUS SYSTEM; DIAGNOSTIC TECHNIQUES; DOSES; NERVOUS SYSTEM; ORGANS; PROCESSING; RADIATION DOSES; TOMOGRAPHY

Optional Information

Notes
35 refs.