The radiation protection programme is aimed at safe usage of radiation at workplace, ensuring minimum possible dose to radiation workers, patients and members of the public. Verification of the adequacy of protective measures in actual workplace is important, especially for diagnostic radiology facilities, as a substantial number of suspected overexposures are reported from these facilities. To address this issue, a study was conducted for mapping workplace radiation field at various locations in nine Diagnostic Radiology Facilities of two hospitals in India. The cumulative doses were measured for a period of 1–3 months, using personnel monitoring TLD badges. The dosemeters were placed at positions representative of two exposure situations: (1) probable locations of workers during procedures, leading to genuine exposure and (2) inappropriate storage locations of personal dosemeters at user end for probing claims of nongenuine exposures. The results indicate that the measured doses at locations (1) were just a fraction of the permissible dose, provided all safety practices are adhered to. However, the measured doses at certain locations (2) exceeded the investigation levels and indicate that any inadvertent storage of the dosemeters at such locations could lead to reporting of the overexposure from these radiology facilities. The outcome of the study will be useful for the investigation of such exposures and better understanding of the readout patterns of TLD badges in radiology workplaces.

中文翻译：

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使用人员监测 TLD 徽章在放射诊断设施中绘制工作场所辐射场图

辐射防护计划的目的是在工作场所安全使用辐射，确保辐射工作人员、患者和公众受到尽可能低的剂量。在实际工作场所验证防护措施的充分性非常重要，尤其是对于诊断放射学设施，因为这些设施报告了大量疑似过度暴露的情况。为了解决这个问题，在印度两家医院的九个放射诊断设施的不同地点进行了一项研究，以绘制工作场所辐射场。使用人员监控 TLD 徽章测量了 1-3 个月的累积剂量。剂量计放置在代表两种暴露情况的位置：(1) 操作过程中工人的可能位置，导致真正的暴露和 (2) 个人剂量计在用户端的不适当的存储位置，用于探测非真正暴露的声明。结果表明，只要遵守所有安全措施，在位置 (1) 测得的剂量只是允许剂量的一小部分。然而，在某些位置 (2) 测得的剂量超过了调查水平，表明在这些位置不慎存放剂量计可能会导致报告这些放射设施的过度照射。该研究的结果将有助于调查此类暴露并更好地了解放射工作场所中 TLD 徽章的读出模式。结果表明，只要遵守所有安全措施，在位置 (1) 测得的剂量只是允许剂量的一小部分。然而，在某些位置 (2) 测得的剂量超过了调查水平，表明在这些位置不慎存放剂量计可能会导致报告这些放射设施的过度照射。该研究的结果将有助于调查此类暴露并更好地了解放射工作场所中 TLD 徽章的读出模式。结果表明，只要遵守所有安全措施，在位置 (1) 测得的剂量只是允许剂量的一小部分。然而，在某些位置 (2) 测得的剂量超过了调查水平，表明在这些位置不慎存放剂量计可能会导致报告这些放射设施的过度照射。该研究的结果将有助于调查此类暴露并更好地了解放射工作场所中 TLD 徽章的读出模式。在某些地点 (2) 测得的剂量超过了调查水平，并表明在这些地点无意存放剂量计可能导致报告这些放射设施的过度照射。该研究的结果将有助于调查此类暴露并更好地了解放射工作场所中 TLD 徽章的读出模式。在某些地点 (2) 测得的剂量超过了调查水平，并表明在这些地点无意存放剂量计可能导致报告这些放射设施的过度照射。该研究的结果将有助于调查此类暴露并更好地了解放射工作场所中 TLD 徽章的读出模式。