公开(公告)号：US20180280727A1

公开(公告)日：2018-10-04

申请号：US15473708

申请日：2017-03-30

Applicant: SHIMADZU CORPORATION

Inventor： WATARU TAKAHASHI ,  Shinichiro MORI

IPC: A61N5/10 ,  A61B6/03 ,  G06T7/00 ,  G06T11/00

CPC classification number: A61N5/1049 ,  A61B6/032 ,  A61B6/035 ,  A61B6/04 ,  A61B6/52 ,  A61B6/5205 ,  A61B6/5211 ,  A61N2005/1061 ,  A61N2005/1062 ,  G06T7/0012 ,  G06T7/73 ,  G06T11/005 ,  G06T2207/10121 ,  G06T2207/10124 ,  G06T2207/20068

Abstract: A positioning apparatus automatically performs a patient positioning calculation at high speed and a positioning method. A positioning apparatus 40 has, as functional components, a DRR image generation element 41 that generates the DRR image based on the CT image data, an optimization element 43 that calculates the positional gap of the patient 57 by optimizing the fluoroscopic projection parameters; and an initial parameter adjustment element 42 that changes the initial position of the fluoroscopic projection parameters prior to optimization of fluoroscopic projection parameters with regard to the rotatable and translation of the CT image data relative to the optimization element 43.

公开(公告)号：US20180154180A1

公开(公告)日：2018-06-07

申请号：US15497263

申请日：2017-04-26

Applicant: SHIMADZU CORPORATION

Inventor： Shinichiro MORI ,  Wataru TAKAHASHI

IPC: A61N5/10 ,  A61B6/00 ,  G21K4/00

CPC classification number: A61N5/1049 ,  A61B6/4266 ,  A61B6/487 ,  A61N5/1068 ,  A61N2005/1061 ,  A61N2005/1062 ,  G21K4/00

Abstract: An X-ray fluoroscopic apparatus is capable of irradiating exactly a therapeutic beam considering a specific-regional area, and in addition is able to perform an easy confirmation of the specific region even when the specific region is difficult to visually recognize by a user. A control element 30 has a DRR image generation element 31, an X-ray fluoroscopic radiograph generation element 32, a template area selection element 33, a template generation element 34, a position detection element 35, a radiation area projection element 36, a specific region projection element 37, a superimposition element 38, an image display element 39, a gating element 40 and a memory storing element 41 that stores a variety of data including image data.

公开(公告)号：US20200069967A1

公开(公告)日：2020-03-05

申请号：US16347048

申请日：2017-07-20

Applicant: Shimadzu Corporation

Inventor： Shinichiro MORI ,  Wataru TAKAHASHI

IPC: A61N5/10 ,  A61N5/01 ,  G06T7/00 ,  A61B6/00

Abstract: A control unit 30 includes: an image storage unit 31 constituted by a first image storage unit 32 that stores multiple templates created on the basis of an image including a specific site of a subject and a second image storage unit 33 that stores multiple positive images created on the basis of an image including the specific site of the subject; a learning unit 34 that, on the basis of the multiple positive images, creates a discriminator by machine learning; a position selection unit 35 that, with use of multiple images obtained by collecting an image including the specific site of the subject at a predetermined frame rate, selects a region including the specific site by machine learning using the discriminator; and a position detection unit 36 that detects the position of the specific site by performing template matching using the multiple templates on the region including the specific site selected by the position selection unit 35.

公开(公告)号：US20190060672A1

公开(公告)日：2019-02-28

申请号：US16107368

申请日：2018-08-21

Applicant: SHIMADZU CORPORATION

Inventor： Wataru TAKAHASHI ,  Michel DARGIS ,  Shinichiro MORI

IPC: A61N5/10 ,  A61B6/12 ,  A61B6/00

Abstract: A radiotherapy tracking apparatus for tracking a position of a specific region with markerless tracking even when visual recognition of the specific region of the subject is poor and for eliminating preliminary work such as preparation of a template. A control element comprises a DRR image generation element, a phase-based position calculation element, an X-ray fluoroscopic image obtaining element, a phase adjuster, a frame-based position calculation element, a gating element and a memory storage. The frame-based position calculation element calculates the position of the specific region of the subject in the X-ray fluoroscopic image having the plurality of frames frame-by-frame based on the DRR image adjusted with the X-ray fluoroscopic image in the phase adjustment element and the position of the specific region calculated by the phase-based position calculation element.

公开(公告)号：US20180276851A1

公开(公告)日：2018-09-27

申请号：US15467510

申请日：2017-03-23

Applicant: SHIMADZU CORPORATION

Inventor： Wataru TAKAHASHI ,  Shinichiro MORI

IPC: G06T11/00 ,  A61B6/03 ,  A61B6/00 ,  A61N5/10

CPC classification number: G06T11/003 ,  A61B6/032 ,  A61B6/461 ,  A61B6/487 ,  A61B6/5205 ,  A61B6/5258 ,  A61B6/54 ,  A61N5/1077 ,  G06T2210/41

Abstract: A DRR image generation method and a DRR image generation apparatus provide the equivalent image-quality to the X-ray radiograph and includes an image processing element 80, a calculation point setting element 81 that sets a ray connecting an X-ray tube relative to the geometrical arrangement of the X-ray radiography system reconstructed on a computer and each pixel of the X-ray CT data, and in addition, sets a plurality of calculation points on the ray; a CT value correction element 82 that compensates the CT value of each calculation point set by the calculation point setting element 81 based on the cumulative CT value from the X-ray tube to the calculation point; a CT value cumulation element 83 that cumulates the CT value of the calculation point located on the ray using the CT value of each calculation point after corrected by the CT value correction element 82; and a DRR image generation element 84 that that generates the DRR image based on the CT value cumulated by the CT value cumulation element 83.