EuroSafe Imaging 2020
Performed at one institution, Experimental, Prospective, Dosimetric comparison, Dosimetry, CT, Radioprotection / Radiation dose, Radiographers, Head and neck, Head and Neck
T. Oku, T. Masuda, T. Yoshiura, Y. Matsumoto, Y. yamashita, M. yoshida
Japanese have more than 26 million CT scans every year. And these are approximately one in four of all Japanese in the examination. And this predicts the possibility that an estimated 29,000 Japanese will be diagnosed with cancer each and every year 1) 2).
The computed tomography dose index volume (CTDIvol) of exposure dose defined by diagnostic reference level (DRL) in each country is much higher for head CT 60 to 85 mGy than for the chest and abdomen CT 15 to 35 mGy 3-5). In addition, head CT is performed by everyone from babies to the elderly, regardless of gender. Therefore, it is necessary to optimize radiation protection based on the ALARA principle to minimize the radiation dose to patients for outside radiation of the scanning range 6). However, outside radiation dose has not been discussed.
In recent years, many manufacturers have provided for radiation protection products, and one of them is a radiation protection shield (RPS). Therefore the purpose of this study was to compare the outside radiation dose between “the with” or “the without” RPS in head CT examination.