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Practical Approach to Reducing Patients' Radiation Dose in Multidetector Computed Tomography-128 Using Modification of Scan Parameters Publisher



Choopani MR1 ; Abedi I2 ; Mahmoodi M2 ; Bagheri J3
Authors
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Authors Affiliations
  1. 1. Department of Radiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Department of Radiology, Alzahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Journal of Isfahan Medical School Published:2020


Abstract

Background: There is a close relationship between the radiation dose and the image quality; so that increasing the radiation dose leads to an increase in the image quality. Methods: In this study, images of different thicknesses and filters were obtained by using Multidetector Computed Tomography (CT)-128 and Body mass measurement device-7 (BMMD-7) phantom scanner. The parameters of radiation dose, noise, spatial, and contrast resolution were monitored by the observers as well. Findings: As the slice thickness increased, the amount of spatial resolution at different radiation doses was not significantly different from that of the standard image. In addition, by changing the reconstruction filter, a similar behavior was observed for spatial resolution (P < 0.05). Conclusion: CT operators have the task of selecting the appropriate slice thickness and reconstruction filter for each medical application. Therefore, the radiation dose can be reduced to a higher degree according to the image quality required for diagnosis. © 2020 Isfahan University of Medical Sciences(IUMS). All rights reserved.
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