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Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin

Computed Radiography (CR) system has the ability to reduce patient radiation dose compared to the conventional screen film system. However, if it is not properly handled, it may result in higher radiation dose to the patient. The objectives of this study are to compare the kVp usage and the exposure...

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Main Author: Mohamad Zin @ Jin, Mohamad Zamri
Format: Thesis
Language:English
Published: 2017
Subjects:
L Education (General)
Online Access:https://ir.uitm.edu.my/id/eprint/99026/1/99026.pdf
https://ir.uitm.edu.my/id/eprint/99026/
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spelling my.uitm.ir.990262024-09-12T16:21:15Z https://ir.uitm.edu.my/id/eprint/99026/ Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin Mohamad Zin @ Jin, Mohamad Zamri L Education (General) Computed Radiography (CR) system has the ability to reduce patient radiation dose compared to the conventional screen film system. However, if it is not properly handled, it may result in higher radiation dose to the patient. The objectives of this study are to compare the kVp usage and the exposure indicators recommended by the manufacturer for abdominal CR in selected hospitals with the optimum quality image produced using standard abdominal phantom. In medical imaging laboratory, abdominal phantom images are produced using several X-ray exposure parameters setting. All images are studied for noise level, contrast, resolution and the Entrance Skin Dose (ESD). The best image with high quality and lowest ESD was identified and the mean exposure parameters involved become the references value. In clinical practice, exposure parameters used for abdominal radiography were collected and analysed in three hospitals. The mean for kVp, mAs, exposure indicator and ESD were compared between hospitals and laboratory results. The use of exposure indicators were analysed and compared with the machine Manufacturer Recommended Range (MRR). The result showed that, the mean for exposure parameters to produce the best standard abdominal image quality using phantom was 75 kVp and 46.5 mAs with ESD 5.71 mGy. In clinical practices showed that variation of exposure parameters used in clinical practice was between 60 to 80 kVp and 16 to 50 mAs. The median kVp for centre A, B and C is 75, 70 and 73 with 32, 31 and 24 mAs respectively meanwhile the median ESD for centre A, B and C is 3.77, 2.71 and 2.65 mGy. More than 60% of the exposure indicators for those centres were beyond the manufacturer recommended range (MRR) value. Each hospital practices the same standard of exposure parameters but most of them used lower setting compared to the reference value. Most of radiographers used exposure parameters beyond the MRR. The different ESD in clinical practice with the reference value is due to multiple X-ray machine used which each of them has dedicated output factors. 2017 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/99026/1/99026.pdf Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin. (2017) Masters thesis, thesis, Universiti Teknologi MARA (UiTM). <http://terminalib.uitm.edu.my/99026.pdf>
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic L Education (General)
spellingShingle L Education (General)
Mohamad Zin @ Jin, Mohamad Zamri
Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin
description Computed Radiography (CR) system has the ability to reduce patient radiation dose compared to the conventional screen film system. However, if it is not properly handled, it may result in higher radiation dose to the patient. The objectives of this study are to compare the kVp usage and the exposure indicators recommended by the manufacturer for abdominal CR in selected hospitals with the optimum quality image produced using standard abdominal phantom. In medical imaging laboratory, abdominal phantom images are produced using several X-ray exposure parameters setting. All images are studied for noise level, contrast, resolution and the Entrance Skin Dose (ESD). The best image with high quality and lowest ESD was identified and the mean exposure parameters involved become the references value. In clinical practice, exposure parameters used for abdominal radiography were collected and analysed in three hospitals. The mean for kVp, mAs, exposure indicator and ESD were compared between hospitals and laboratory results. The use of exposure indicators were analysed and compared with the machine Manufacturer Recommended Range (MRR). The result showed that, the mean for exposure parameters to produce the best standard abdominal image quality using phantom was 75 kVp and 46.5 mAs with ESD 5.71 mGy. In clinical practices showed that variation of exposure parameters used in clinical practice was between 60 to 80 kVp and 16 to 50 mAs. The median kVp for centre A, B and C is 75, 70 and 73 with 32, 31 and 24 mAs respectively meanwhile the median ESD for centre A, B and C is 3.77, 2.71 and 2.65 mGy. More than 60% of the exposure indicators for those centres were beyond the manufacturer recommended range (MRR) value. Each hospital practices the same standard of exposure parameters but most of them used lower setting compared to the reference value. Most of radiographers used exposure parameters beyond the MRR. The different ESD in clinical practice with the reference value is due to multiple X-ray machine used which each of them has dedicated output factors.
format Thesis
author Mohamad Zin @ Jin, Mohamad Zamri
author_facet Mohamad Zin @ Jin, Mohamad Zamri
author_sort Mohamad Zin @ Jin, Mohamad Zamri
title Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin
title_short Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin
title_full Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin
title_fullStr Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin
title_full_unstemmed Evaluation of abdominal computed radiography (CR) exposure parameters at selected hospitals in Klang Valley of Malaysia / Mohamad Zamri Mohamad Zin @ Jin
title_sort evaluation of abdominal computed radiography (cr) exposure parameters at selected hospitals in klang valley of malaysia / mohamad zamri mohamad zin @ jin
publishDate 2017
url https://ir.uitm.edu.my/id/eprint/99026/1/99026.pdf
https://ir.uitm.edu.my/id/eprint/99026/
_version_ 1811598107386839040
score 13.211869

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