The aimed of this study is to evaluate patient dosimetry received from Posterior Anterior Chest X-ray (PA-CXR) examination performed at community clinics in Perak using a nanodot Al2O3:C Optically Stimulated Luminescence dosimeter (OSLD). Four clinics were involved in this research namely Simpang Health Clinic, Buntong Health Clinic, Teluk Intan Health Clinic and Pengkalan Hulu Health Clinic. The ESD was measured by placing the OSLD on polymethylmethacrylate (PMMA) slabs that resembling a human body specifically lung. These clinics were selected as they were excluded from the first and second national dose survey conducted in Malaysia since 1993-1995 and 2005-2009 respectively. Previously, the recommended guidance level for PA-CXR entrance surface dose (ESD) was set at 0.9 mGy. We compare the ESD measured with OSL and guidance level set under the second national dose survey which utilized LiF:Mg, Ti thermoluminescence dosimeter (TLD). The results indicated that the 3rd quartile ESD measured using OSLD were ranged 0.271 mGy – 0.368 mGy which 30% lesser than the recommended guidance level.

This study aims to compare entrance surface dose (ESD) values measured with nanoDot Al 2 O 3 :C optically-stimulated luminescence dosimeter (OSLD) and guidance level set under the second national dose survey which utilized old-version LiF:Mg,Ti thermoluminescence dosimeter (TLD). In this study, we conducted a dosimetric assessment for posteroanterior chest X-ray (PA-CXR) examinations performed at various community clinics in Perak, Malaysia. These clinics were selected as they were excluded from the first and second national dose survey conducted in Malaysia in 1993-1995 and 2005-2009, respectively. The ESD is obtained by mounting the OSLD on the surface of polymethyl methacrylate (PMMA) slabs. The PMMA slabs were then exposed to X-ray based on the current practice of respective clinics. The results show that the 3 rd quartile of ESDs ranged from 0.180 mGy to 0.229 mGy which is less than the recommended guidance level of the second national dose survey by 77 %. ESD measured using OSLD was found to be lower than the guidance values recommended from the second national dose survey. The finding showed a good competency of the radiographer to optimize radiological practice specifically in routine X-ray examination.