X-ray diagnostic apparatus

Patent metadata

Field	Value
Publication number	US-2016007949-A1
Application number	US-201514794161-A
Country	US
Kind code	A1
Filing date	Jul 8, 2015
Priority date	Jul 9, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube holding device, an X-ray detector, a rotator, an arm, and a tubular body. The X-ray tube holding device generates X-rays. The X-ray detector detects the X-rays. The rotator holds the X-ray tube holding device so as to be rotatable about a first rotation axis obtained by setting an irradiation direction of the X-rays as an axis. The arm holds the rotator and the X-ray detector and is rotatable about a second rotation axis different from the first rotation axis. The tubular body connects the X-ray tube holding device and a device away from the arm. The arm holds the rotator so as to be rotatable about the first rotation axis in a direction in which torsion of the tubular body is reduced.

First claim

1 . An X-ray diagnostic apparatus comprising:
an X-ray tube holding device configured to generate X-rays; an X-ray detector configured to detect the X-rays; a rotator configured to hold the X-ray tube holding device so as to be rotatable about a first rotation axis obtained by setting an irradiation direction of the X-rays as an axis; an arm configured to hold the rotator and the X-ray detector and rotatable about a second rotation axis different from the first rotation axis; and a tubular body configured to connect the X-ray tube holding device and a device away from the arm, wherein the arm holds the rotator so as to be rotatable about the first rotation axis in a direction in which torsion of the tubular body is reduced.

2 . The apparatus of claim 1 , further comprising:
a control circuitry configured to control to rotate the rotator about the first rotation axis in the direction in which the torsion of the tubular body caused by the rotation of the arm is reduced, in accordance with the rotation of the arm about the second rotation axis.

3 . The apparatus of claim 2 , further comprising:
a holding mechanism configured to hold the arm so as to be rotatable about the second rotation axis, wherein the tubular body passes through the holding mechanism.

4 . The apparatus of claim 3 , wherein the second rotation axis is an axis passing through the holding mechanism and perpendicular to the first rotation axis when the arm is at an initial position.

5 . The apparatus of claim 3 , wherein the control circuitry controls to rotate the arm about the second rotation axis by not less than 360°.

6 . The apparatus of claim 5 , further comprising:
an image generation circuitry configured to generate a reconstruction image based on X-ray data at each angle, which has been detected by the X-ray detector during the rotation of the arm about the second rotation axis.

7 . The apparatus of claim 5 , further comprising:
an image generation circuitry configured to continuously generate fluoroscopic images based on a plurality of continuous X-ray data which have been detected by the X-ray detector during the rotation of the arm about the second rotation axis; and a display configured to continuously displays the fluoroscopic images.

8 . The apparatus of claim 1 , wherein
the device is a high-voltage generator configured to generate a voltage to be applied to the X-ray tube holding device, and the tubular body is a high-voltage cable configured to connect the high-voltage generator and the X-ray tube holding device.

9 . The apparatus of claim 1 , wherein
the X-ray tube holding device includes an X-ray tube configured to generate X-rays and a housing configured to store the X-ray tube, the device is a cooling device configured to circulate, in the housing, a medium for cooling the X-ray tube, and the tubular body is a hose configured to connect the cooling apparatus and the housing.

10 . The apparatus of claim 2 , wherein the control circuitry controls to rotate the rotator about the first rotation axis in synchronism with the arm while the arm rotates about the second rotation axis.

11 . The apparatus of claim 1 , further comprising:
a top on which an object is to be placed; and a bed configured to support the top so as to be slidable in a longitudinal direction, wherein the bed moves along a body axis direction of the object while the arm continuously rotates about the second rotation axis by not less than 360°.

12 . The apparatus of claim 2 , wherein
the X-ray detector includes a first detector and a second detector movably provided near the first detector, and the control circuitry controls to rotate the arm about the second rotation axis, and controls to move the second detector in accordance with the rotation.

13 . The apparatus of claim 12 , wherein
the second detector is a photon counting detector, and the control circuitry controls to move the second detector in a direction substantially parallel to a detection surface of the first detector in front of the detection surface.

14 . The apparatus of claim 1 , further comprising:
a torsional relaxation mechanism provided between the X-ray tube holding device and the device and configured to relax torsion caused by the rotation of the tubular body by performing rotation in synchronism with the rotation of the X-ray tube holding device.

Assignees

• Toshiba Kk
• Toshiba Medical Sys Corp

Inventors

• Kobayashi Yoshimasa
• Ohashi Shumpei

Classifications

• A61B6/4482

  involving power assist circuits · CPC title

• A61B6/4441

  the rigid structure being a C-arm or U-arm · CPC title

• A61B6/54 Primary

  Control of apparatus or devices for radiation diagnosis · CPC title

• A61B6/582

  Calibration · CPC title

• H01J2235/1216

  of the vessel · CPC title