PMID- 36928986
OWN - NLM
STAT- MEDLINE
DCOM- 20230508
LR  - 20230508
IS  - 1742-3406 (Electronic)
IS  - 0144-8420 (Linking)
VI  - 199
IP  - 7
DP  - 2023 May 3
TI  - FACTORS INFLUENCING SIZE-SPECIFIC DOSE ESTIMATES OF SELECTED COMPUTED TOMOGRAPHY 
      PROTOCOLS AT TWO CLINICAL PRACTICES IN SOUTH AFRICA.
PG  - 588-602
LID - 10.1093/rpd/ncad059 [doi]
AB  - The study aimed to determine the factors that impact the size-specific dose 
      estimate (SSDE) for computed tomography (CT) examinations of the 
      chest-abdomen-pelvis and abdomen-pelvis protocols in two clinical radiology 
      practices and evaluate the image quality of these protocols. Imaging parameters, 
      protocols, dose metrics from the CT units and size-related parameters to 
      calculate the SSDE were documented. The image quality of the CT images was 
      assessed using an image subtraction algorithm. The SSDE increased as the 
      volumetric CT dose index (CTDIvol), and the patient's body mass index increased, 
      respectively. Significant differences (p < 0.001) occurred between the two 
      hospitals regarding image quality. However, these differences were not indicative 
      of differences in the diagnostic performances for task-based imaging protocols. 
      Different clinical protocols should be reviewed to optimise dose. The inclusion 
      of the pre-monitoring sequence, age of the machine and the scan requisition 
      parameters impacted the SSDEs. Image quality should be assessed to evaluate the 
      consistency of image quality between protocols applied by different CT units when 
      assessing SSDEs.
CI  - (c) The Author(s) 2023. Published by Oxford University Press. All rights reserved. 
      For Permissions, please email: journals.permissions@oup.com.
FAU - Sebelego, Ida-Keshia
AU  - Sebelego IK
AUID- ORCID: 0000-0002-4362-1216
AD  - Department of Clinical Sciences, Faculty of Health and Environmental Sciences, 
      Central University of Technology, Bloemfontein, 9301, South Africa.
FAU - Acho, Sussan
AU  - Acho S
AD  - Department of Medical Physics, Faculty of Health Sciences, University of the Free 
      State, Bloemfontein, 9300, South Africa.
FAU - van der Merwe, Belinda
AU  - van der Merwe B
AD  - Department of Clinical Sciences, Faculty of Health and Environmental Sciences, 
      Central University of Technology, Bloemfontein, 9301, South Africa.
FAU - Rae, William I D
AU  - Rae WID
AD  - Department of Medical Physics, Faculty of Health Sciences, University of the Free 
      State, Bloemfontein, 9300, South Africa.
AD  - Medical Imaging Department, Prince of Wales Hospital, Randwick, 2133, Australia.
LA  - eng
GR  - 121950/National Research Foundation/
GR  - Department of Higher Education and Training/
GR  - joint collaboration project Radiation Protection Improvement in South Africa/
GR  - Central University of Technology Free State/
PT  - Journal Article
PL  - England
TA  - Radiat Prot Dosimetry
JT  - Radiation protection dosimetry
JID - 8109958
SB  - IM
MH  - Humans
MH  - Radiation Dosage
MH  - South Africa
MH  - Retrospective Studies
MH  - *Tomography, X-Ray Computed/methods
MH  - *Algorithms
EDAT- 2023/03/18 06:00
MHDA- 2023/05/08 10:17
CRDT- 2023/03/17 09:39
PHST- 2022/03/14 00:00 [received]
PHST- 2023/01/19 00:00 [revised]
PHST- 2023/01/29 00:00 [accepted]
PHST- 2023/05/08 10:17 [medline]
PHST- 2023/03/18 06:00 [pubmed]
PHST- 2023/03/17 09:39 [entrez]
AID - 7078812 [pii]
AID - 10.1093/rpd/ncad059 [doi]
PST - ppublish
SO  - Radiat Prot Dosimetry. 2023 May 3;199(7):588-602. doi: 10.1093/rpd/ncad059.