TLD environmental monitoring of new scanner facilities at the Nuclear Medicine Department of the Taiwan Medical University Hospital

doi:10.3233/THC-209015

中山醫學大學機構典藏 CSMUIR > 中山醫學大學研究成果 > 期刊論文 > Item 310902500/24398

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/24398

Title:	TLD environmental monitoring of new scanner facilities at the Nuclear Medicine Department of the Taiwan Medical University Hospital
Authors:	Le, YY;Weng, JH;Lee, TM;Lee, YC;Kao, PF;Pan, LK;Chen, CY
Keywords:	Environmental radiation rates;thermoluminescence dosimeter;SPECT;DXA;Nuclear Medicine Department;minimum detectable dose
Date:	2020
Issue Date:	2022-08-09T08:01:39Z (UTC)
Publisher:	IOS PRESS
ISSN:	0928-7329
Abstract:	OBJECTIVE: Single-photon emission computed tomography (SPECT) as well as dual energy X-ray absorptiometry (DXA) scanners were designed in July 2018 at the Nuclear Medicine Department (NM), of the Taiwan Medical University Hospital. These scanners emit substantial X-rays from the target, which are tungsten, iron. Therefore, patients undergoing SPECT and DXA diagnosis, in addition to medical personnel, are exposed to undesirable photon leakage. METHODS: Following administration of radiopharmaceuticals, patients become radioactive sources; thus, it is necessary to evaluate a possible increase in the environmental gamma exposure rates in the NM as a result of the operation of the new scanners. A three month evaluation of environmental radiation in the NM was performed using the accurate and sensitive TLD-100H approach, which gives an error rate less than 10%. RESULTS: Detected exposure radiation rates in the NM ranged from 0.12 +/- 0.02 to 1.00 +/- 0.15 mSv per month, indicating that the imaging room had significantly different radiation rates. The results were compared with previous results, and no significant contribution to the enhancement of environmental gamma radiation was detected, which remained far below the occupational dose recommended by ICRP 60. The minimum detectable dose (MDD) for environmental radiation is also discussed herein to demonstrate the reliability of TLD-100H. CONCLUSION: Recommendations were sent to the authorities of AEC-ROC to implement actions that could reduce doses at these high-dose locations to meet the ALARA principle.
URI:	http://dx.doi.org/10.3233/THC-209015 https://www.webofscience.com/wos/woscc/full-record/WOS:000541700200015 https://ir.csmu.edu.tw:8080/handle/310902500/24398
Relation:	TECHNOLOGY AND HEALTH CARE ,2020 ,v28 S151-S160
Appears in Collections:	[中山醫學大學研究成果] 期刊論文

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