During fetal computed tomography (CT) imaging, because of differences in the pregnancy period and scanning conditions, different doses of radiation are absorbed by the fetus. We propose a correction coefficient for determining the fetal...
Physical and Engineering Sciences in Medicine 2020年9月
<title>Abstract</title>
Organ-effective modulation (OEM) is a computed tomography scanning technique that reduces the exposure dose to organs at risk. Ultrasonography is commonly used for prenatal imaging, but its reliability is reported to be lim...
<title>Abstract</title>
The aim of this study was to investigate differences in volume computed tomography dose index (CTDIvol) and dose-length product (DLP) values according to facility size in Japan. A questionnaire survey was sent to 3000 faci...
J. Yamada   M. Oka   M. Shimo   K. Minami   S. Minato   M. Sugino   M. Hosoda   M. Fukushi   
NATURAL RADIATION ENVIRONMENT 1034 498-+ 2008年
The gamma-ray dose rates were measured in Gifu and Tokushima Prefectures in Japan. Measurements were carried out by the car-borne survey method. The dose rate in basaltic terrain in Tokushima prefecture was almost same as average of basaltic terra...