US 8,077,828 B2 · Radiation imaging device and radiation imaging method

Abstract

When the same subject is to be imaged consecutively plural times, a radiation imaging device is controlled so as to change an imaging time interval between respective imagings according to a set imaging region of the subject. When a chest portion of a subject is to be imaged, a control section designates an image obtained at a second imaging as an image for diagnosis, image quality correction processing is not performed at a first imaging, and an imaging time interval is greatly reduced compared to when other regions are imaged, thereby reducing motion artifacts of an energy subtraction image. When regions other than a chest region are imaged, the control section designates an image obtained at a first imaging as an image for diagnosis, performs image quality correction processing at the first imaging, and an imaging time interval is increased compared to when the chest region is imaged.

Claims16

Dependent claims

A radiation imaging device, comprising:

a radiation ray generation unit that generates radiation rays;
an image detection unit that detects as an image radiation rays that are emitted by the radiation ray generation unit and pass through a subject;
a subtraction image forming unit that forms a subtraction image by using detected images;
and
a control unit that, when the same subject is to be imaged consecutively plural times, changes an imaging time interval between imagings according to a set imaging region of the subject;
wherein
when the same subject is to be imaged consecutively plural times, the control unit controls the radiation ray generation unit so that a radiation ray tube voltage at each imaging increases monotonically, regardless of the set imaging region of the subject;
and wherein
the control unit determines which is output between an image obtained at a first imaging or an image obtained at a second imaging, according to the set imaging region of the subject.

6 more elements

Dependencies are inferred from the claim text.

Radiation imaging device and radiation imaging method

Life of this patent

Radiation imaging device and radiation imaging method

Life of this patent

Abstract

Claims16