Yasunori Ohta,Naoyuki Nishino,Haruyasu Nakatsugawa,Yutaka Yoshida
申请号：
US12975385
公开号：
US08744043B2
申请日:
2010.12.22
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A radiation image capturing device includes a radiation image capturing unit, a diaphragm unit, and a control unit. The radiation image capturing unit captures a radiation image based on radiation transmitted through a subject. The diaphragm unit has an opening region that is configured to transmit a part of the radiation emitted from a radiation source and an area thereof is changeable, and the diaphragm unit is configured such that a transmission dose of the radiation decreases as a distance from a circumferential part of the opening region increases. The control unit controls the diaphragm unit such that direct rays of the radiation are irradiated onto a predetermined region of the subject.
