Review of Public Safety in Some Non Governmental Medical Radiation Facilities in Bangladesh
Abstract
The use of ionizing radiations is being greatly extended especially in medical diagnostic radiological facilities in Bangladesh. Diagnostic Radiology is the use of x-rays to investigate the structure and function of the human body. The underlying aim in radiology is to obtain the best possible diagnostic image with the least radiation exposure to concerned people. In order to ensure radiation safety of the public adequate shielding is required during operation of the x-ray machine. Therefore, to find out the adequacy of shielding of an x-ray room shielding calculation is performed by the application of National Radiological Council and Measurements (NCRP 49 & 147) concepts incorporating real data at applicable points. To perform the work thirty facilities were randomly chosen in Narayanganj district of Bangladesh. A data collection checklist was utilized during investigation of the facilities in order to accumulate the shielding calculation information. In the chosen facilities, mostly lead and brick have been found as the shielding materials for the entrance door and walls of the x-ray room respectively. The average thickness of lead used in the entrance door of x-ray facilities have been calculated 1.04 and 0.51 mm respectively based on NCRP 49 and 147 approaches. In most of the facilities, the existing thicknesses of the shielding material are found higher than the calculated values. Besides, radiation dose was measured across the existing shielding thicknesses to examine…
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