Radiation dose comparisons in CT thorax, CT abdomen and CT thorax-abdomen-pelvis (TAP) between 640-and 160-slice computed tomography (CT) scanners

Authors

  • Ying Shen Gan Diagnostic Imaging & Radiotherapy Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia
  • Akmal Sabarudin Diagnostic Imaging & Radiotherapy Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia
  • Khadijah Mohamad Nasser Diagnostic Imaging & Radiotherapy Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia
  • Hamzaini Abdul Hamid Radiology Department, Faculty of Medicine, UKM Medical Center, Universiti Kebangsaan Malaysia
  • Mazli Mohamad Zain Radiology Department, Faculty of Medicine, UKM Medical Center, Universiti Kebangsaan Malaysia
  • Muhammad Khalis Abdul Karim Department of Physics, Faculty of Sciences, Universiti Putra Malaysia,

Keywords:

Computed Tomography, radiation dose, gender, 160-slices CT scanner, 640-slices CT scanner

Abstract

This study was carried out to compare the effective dose, size specific dose estimation (SSDE) and scan length between genders and between CT scanner with different slice number. A total of 245 set data of radiation dose and scan length for CT scanning procedure involving thorax, abdomen and pelvis regions were obtained retrospectively for comparisons. 111 patients (60 males and 51 females) were scanned using 160-slices CT scanner while 134 patients (71 males and 63 females) were scanned using 640-slices CT scanner. Generally, there were no significant differences in the radiation dose and scan length among genders. However, differences for SSDE in CT thorax and CT thorax-abdomen-pelvis (TAP) protocols exist whereby in CT thorax protocol, 640-slices CT scanner had a significantly higher value of SSDE (9.06±2.67 mGy) than that in 160-slices CT scanner (7.82±1.33 mGy). Similarly to the CT TAP protocol, whereby 640-slices CT scanner had a significantly lower value in SSDE (9.17±1.59 mGy) than that in 160-slices CT scanner (10.76±3.72 mGy).In conclusion, there was no significant difference in the radiation dose and scan length between genders but significant difference was only observed in SSDE due to the presence of body size variation among the study population especially in different CT scanners.DOI : http://dx.doi.org/10.17576/JSKM-2020-1801-05

Downloads

Additional Files

Published

2020-03-12

Issue

Vol. 18 No. 1 (2020)

Section

Medical Imaging and Radiation Therapy

License

It is a condition of publication in the Journal that authors assign copyright to the Penerbit, Universiti Kebangsaan Malaysia, using the form available on the Copyright Assignment Form page. This ensures that requests from third parties to reproduce articles are handled efficiently and consistently and will also allow the article to be as widely disseminated as possible. In assigning copyright, authors may use their own material in other publications provided that the Journal is acknowledged as the original place of publication, and Penerbit Universiti Kebangsaan Malaysia is notified in writing and in advance.

Our journal offers an open access articles, which is under the Creative Common license type : Attribution-NonCommercial-ShareAlike (CC BY-NC-SA)