Study and Analysis of Radiation Level at Different Hospitals in Nepal.

摘要

In Nepal, diagnostic use of radiation has been practiced for a long time. We have no radiation regulatory board, which controls the radiation protection activities. This study was done to develop radiation safety culture to benefit Nepalese People, to create awareness on radiation, to make the radiation workers aware on possible radiation health hazard and to know their view on radiation protection, to make inventory of availability of equipment of the surveying hospitals and to initiate steps towards establishment of Nepalese code of radiological Practice. The following activities were carried out to assess the status of radiation protection at different radiological centers, questionnaire for radiation workers, radiation dose level measurement and made an inventory of availability of radiation producing equipment of surveyed hospitals. The dose level were measured by Roentgen Gamma Ray Dosimeter (RGD27091) and FAGFH40F1. To calculate equivalent dose level H (mSv/week) we measure dose rate level in each area D (mSv/min) in an exposition at higher kV, mAm and minm H(mSv/week)= D(mSv/min)·Workload(mA.min/week) Altogether 15 Hospitals were monitored, and 86 radiation workers entertained the questionnaire. Some radiation workers are not qualified and do not have knowledge on radiation but doing X-ray procedure. Most of the general X-ray and CT working areas are safe but some need more protection, in the patient entering door and control console area. In Fluoroscopy some exceeds the dose limit noted by International Commission on Radiological Protection (1CRP). None of the surveyed hospitals have Personnel monitoring system. Most of the radiation workers are aware of radiation hazard and wanted TLD for personnel monitoring, radiation regulatory board and radiation act. The interesting thing we found during our survey is that some unqualified personnel are exposing the patients.