US 12,121,383 B2
X-ray diagnostic apparatus and control method
Shingo Abe, Nasushiobara (JP); Hisato Takemoto, Nasushiobara (JP); Kazuhiro Taniyama, Otawara (JP); and Hidenori Yamaguchi, Nasushiobara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed by Toshiba Medical Systems Corporation, Otawara (JP)
Filed on Jun. 29, 2017, as Appl. No. 15/637,331.
Claims priority of application No. 2016-129150 (JP), filed on Jun. 29, 2016.
Prior Publication US 2018/0000438 A1, Jan. 4, 2018
Int. Cl. A61B 6/00 (2024.01); A61B 6/02 (2006.01); A61B 6/12 (2006.01); H04N 5/32 (2023.01)
CPC A61B 6/487 (2013.01) [A61B 6/12 (2013.01); A61B 6/544 (2013.01); H04N 5/32 (2013.01); A61B 6/022 (2013.01); A61B 6/4441 (2013.01); A61B 6/485 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An X-ray diagnosis apparatus, comprising:
an X-ray tube configured to radiate X-rays;
an X-ray detector configured to detect the X-rays;
an arm holding the X-ray tube; and
processing circuitry configured to;
obtain two acquisition conditions for X-ray images acquired from two acquisition directions with different body thicknesses,
compare sizes of the two body thicknesses corresponding to the two acquisition conditions to determine whether a direction at a start of acquisition of a plurality of X-ray images corresponds to a thicker one or a thinner one of the two body thicknesses,
set, based on the two acquisition conditions and the determined one of the two body thicknesses corresponding to the direction at the start of acquisition, a start condition corresponding to the start of acquisition of the plurality of X-ray images,
begin acquiring of the plurality of X-ray images with the start condition, and
acquire the plurality of X-ray images sequentially by rotating the arm around one part of a circumference of a subject while iteratively setting acquisition conditions for acquiring of the plurality of X-ray images by feedback control, the feedback control comprising sequentially adjusting the acquisition conditions based on a comparison result between a threshold and a pixel value in one of the plurality of X-ray images sequentially acquired by rotating the arm, wherein
the processing circuitry is configured to set the start condition corresponding to the start of acquisition of the plurality of X-ray images for keeping a change in pulse width within a preset pulse width range, the pulse width being iteratively set by the feedback control.