US 2003/0118155 A1 · Radiological imaging apparatus

Abstract

An imaging apparatus of a radiological imaging apparatus is provided with a first and a second radiation detectors disposed around a hole portion into which a bed is inserted. The first radiation detector includes a detecting portion formed of GaAs of a square having a side of 5 mm and having a thickness of 2 mm. The second radiation detector includes a detecting portion formed of CdTe of a cube having a side of 5 mm. The first radiation detector detects X-rays emitted from an X-ray source and transmitted through an examinee and does not detect γ-rays emitted from the examinee. The second radiation detector detects above X-rays and γ-rays. An X-ray signal processing apparatus processes an X-ray image signal from the first radiation detector and outputs intensity information thereof. A signal discriminating apparatus processes a γ-ray image signal from the second radiation detector and outputs a pulse signal. Thus, the radiological imaging apparatus capable of carrying out radiation examination of the subject by using X-rays and γ-rays can be simplified.

Claims13

Dependent claims

A radiological imaging apparatus comprising:

a bed on which a subject is laid;
an image pickup apparatus;
the image pickup apparatus comprising:
an X-ray source which is used to irradiate the subject with X-rays;
an X-ray source moving apparatus for moving the X-ray source in a circumferential direction of a hole portion into which the bed is inserted;
a plurality of first radiation detectors, disposed around the hole portion, for not substantially detecting γ-rays from the subject but detecting X-rays, and outputting a first detecting signal which is a detecting signal of X-rays;
and
a second radiation detector, disposed around the hole portion, for detecting γ-rays and X-rays from the subject and outputting both the first detecting signal and a second detecting signal which is a detecting signal of γ-rays;
a first signal processing apparatus for processing the first detecting signal outputted from the first radiation detector;
and
a second signal processing apparatus for processing the second detecting signal outputted from the second radiation detector.

8 more elements

A radiological imaging apparatus comprising:

a bed on which a subject is laid;
an image pickup apparatus;
the image pickup apparatus comprising:
an X-ray source which irradiates the subject with X-rays;
an X-ray source moving apparatus for moving the X-ray source in a circumferential direction of a hole portion into which the bed is inserted;
a plurality of first radiation detectors, disposed around the hole portion, for detecting γ-rays and X-rays from the subject and outputting both a first detecting signal which is a detecting signal of X-rays and a second detecting signal which is a detecting signal of γ-rays;
and
a second radiation detector, disposed around the hole portion, for detecting γ-rays and X-rays from the subject and outputting both the first detecting signal and the second detecting signal;
a first signal processing apparatus for processing the first detecting signal outputted from the first radiation detector;
and
a second signal processing apparatus for processing the second detecting signal outputted from the second radiation detector.

8 more elements

Dependencies are inferred from the claim text.

Radiological imaging apparatus

Life of this patent

Radiological imaging apparatus

Life of this patent

Abstract

Claims13