Title: Publication Preview Source Radiation Dose Associated with Multi-Detector 64-Slice Computed Tomography Brain Examinations in Khartoum State, Sudan
Abstract:Radiation exposure due to computed tomography (CT) has become an important issue, as the
number of CT examinations has been increasing worldwide. Radiation doses associated with CT are
higher in com...Radiation exposure due to computed tomography (CT) has become an important issue, as the
number of CT examinations has been increasing worldwide. Radiation doses associated with CT are
higher in comparison to other imaging procedures. CT-related radiation doses should be monitored
and controlled in order to ensure reduction of radiation exposure and optimization of image quality.
The aim of this study was to evaluate radiation doses in adult patient who underwent routine CT
brain examinations, and to assess how CT scanning protocols affect patient doses in practice.
Material/Methods: A total of 118 patients underwent brain CT at two radiology departments equipped with 64-slice
CT scanners, Khartoum, Sudan. Patient doses regarding weighted CT dose index (CTDIw) and dose
length product (DLP) values were recorded. Quality control tests were performed for both scanners.
Results: The mean CTDIw values ranged from 62.9 to 65.8 mGy, DLP values ranged from 1003.7 to
1192.5 mGy, and the effective dose varied from 2.4 to 3.7 mSv.
Conclusions: Patient doses in this study was higher compared to previous research, suggesting that patients
exposed to unnecessary radiation. Therefore, optimization of radiation doses with the use of
specified imaging protocols, well-documented indications for CT, training of technicians, and
quality control programs will reduce the necessary radiation doses. Establishment of the diagnostic
reference level is recommended for further dose reduction.Read More
Publication Year: 2017
Publication Date: 2017-01-01
Language: en
Type: article
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