Radiation diagnostic apparatus and control method

Patent metadata

Field	Value
Publication number	US-9014330-B2
Application number	US-201213612091-A
Country	US
Kind code	B2
Filing date	Sep 12, 2012
Priority date	Aug 4, 2010
Publication date	Apr 21, 2015
Grant date	Apr 21, 2015

Abstract

A radiation diagnostic apparatus includes a CT gantry apparatus, a PET gantry apparatus and a controller. The CT gantry apparatus includes an X-ray tube and an X-ray detector for reconstructing an X-ray CT image. The PET gantry apparatus includes a plurality of photodetectors for reconstructing nuclear medicine images and an FE circuit that is connected to the back of the photodetectors. The controller exerts control such that, when X-rays are radiated from the X-ray tube, the output from the photodetectors to the FE circuit is stopped or reduced.

First claim

The invention claimed is:

1. A radiation diagnostic apparatus comprising:
a first gantry including an X-ray tube and an X-ray detector for reconstructing an X-ray computed tomography (CT) image;
a second gantry including a plurality of photodetectors for reconstructing nuclear medicine images and a circuit connected to a back of the plurality of photodetectors; and
a controller configured to exert a control such that, when X-rays are radiated from the X-ray tube, output of the plurality of photodetectors to the circuit is stopped or reduced.

2. The radiation diagnostic apparatus according to claim 1 , wherein the controller exerts the control such that, when the X-rays are radiated from the X-ray tube, the output of the plurality of photodetectors is grounded.

3. The radiation diagnostic apparatus according to claim 1 , wherein the controller exerts the control such that, when the X-rays are radiated from the X-ray tube, the output of a part of the plurality of photodetectors is grounded.

4. The radiation diagnostic apparatus according to claim 3 , wherein the controller exerts the control such that, when the X-rays are radiated from the X-ray tube, the output of plurality of photodetectors adjacent to the first gantry out of the plurality of photodetectors is grounded.

5. The radiation diagnostic apparatus according to claim 1 , wherein the controller exerts the control such that, when the X-rays are radiated from the X-ray tube, a power supply to the circuit is stopped.

6. A control method comprising:
exerting, by a controller, a control such that, when X-rays are radiated from an X-ray tube, output of a plurality of photodetectors for reconstructing a nuclear medicine image to a circuit that is connected to a back of the plurality of photodetectors is stopped or reduced.

Assignees

• Takayama Takuzo
• Toshiba Kk
• Toshiba Medical Sys Corp

Inventors

• Takayama Takuzo

Classifications

• A61B6/037 Primary

  Emission tomography · CPC title

• G01T1/1612

  with scintillation detectors (G01T1/20 takes precedence) · CPC title

• A61B6/032

  Transmission computed tomography [CT] · CPC title

• A61B6/4417

  related to combined acquisition of different diagnostic modalities · CPC title

• A61B6/54

  Control of apparatus or devices for radiation diagnosis · CPC title