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  • 1 Nuclear Medicine Department, Lin Shin Hospital, 40867 Taichung, Taiwan, ROC
  • | 2 School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, 40201 Taichung, Taiwan, ROC
  • | 3 Department of Medical Image, Chung Shan Medical University Hospital, Chung Shan Medical University, 40201 Taichung, Taiwan, ROC
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Abstract  

This work is the first evaluation of environmental gamma exposure rates by the Nuclear Medicine Department at Lin Shin Hospital (LSH) in Taichung with Thermoluminescent dosimeter (TLD-100H) during the Fukushima Nuclear Power Plant (FNPP) accident. After the 9.0 MW strong earthquake hit northern Japan on March 11, 2011, a TLD-100H was used to monitor environmental kerma rate at Taichung (2,500 km away from northern Japan) from Mar-08 to Apr-09, 2011 and evaluated kerma rate due to global fallout of the sever FNPP accidents. Exposure rates varied widely among positions close to the PET/CT facility. Observed kerma rates of up to 4.12 ± 0.62 mSv mo−1 indicated an explicit, heavy leakage of photon through the PET/CT facility. No significant contributions were detected at Taichung, Taiwan. Hence, the health effect cause by the “extra radiation” from FNPP accidents is negligible. As this was a rare case of environmental monitoring during a nuclear power plant accident, its findings are of considerable significance.