公开(公告)号：US10186055B2

公开(公告)日：2019-01-22

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

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.

公开(公告)号：US10262443B2

公开(公告)日：2019-04-16

申请号：US16021102

申请日：2018-06-28

Applicant: SHIMADZU CORPORATION

Inventor： Wataru Takahashi ,  Shinichiro Mori

IPC: G06T5/00 ,  G06T11/00 ,  G06T3/40 ,  H04N5/32 ,  H04N5/365

Abstract: A radiation imaging apparatus includes an irradiation element that irradiates a radiation, a radiation detection, an image generation element that generates a radiation image, a memory element that stores a principal component and a location detection element that detects and extracts a specific region from the radiation image by a matching using each contribution rate relative to each template image and each radiation image.

公开(公告)号：US11045663B2

公开(公告)日：2021-06-29

申请号：US16347048

申请日：2017-07-20

Applicant: Shimadzu Corporation

Inventor： Shinichiro Mori ,  Wataru Takahashi

IPC: G06K9/00 ,  A61N5/10 ,  A61B6/00 ,  A61N5/01 ,  G06T7/00

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：US10434335B2

公开(公告)日：2019-10-08

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 ,  A61B6/00 ,  A61B6/04 ,  G06T7/73 ,  G06T11/00

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：US20190012816A1

公开(公告)日：2019-01-10

申请号：US16021102

申请日：2018-06-28

Applicant: SHIMADZU CORPORATION

Inventor： WATARU TAKAHASHI ,  Shinichiro Mori

IPC: G06T11/00 ,  G06T3/40 ,  G06T5/00 ,  H04N5/365

Abstract: A radiation imaging apparatus includes an irradiation element that irradiates a radiation, a radiation detection, an image generation element that generates a radiation image, a memory element that stores a principal component and a location detection element that detects and extracts a specific region from the radiation image by a matching using each contribution rate relative to each template image and each radiation image.

公开(公告)号：US09956427B2

公开(公告)日：2018-05-01

申请号：US15646164

申请日：2017-07-11

Applicant: SHIMADZU CORPORATION

Inventor： Shinichiro Mori ,  Yoshiyuki Yamagishi ,  Yui Torigoe

IPC: A61N5/10 ,  A61B6/03

CPC classification number: A61N5/1037 ,  A61B6/032 ,  A61N5/1039 ,  A61N5/1049 ,  A61N5/1077 ,  A61N2005/1061

Abstract: A radiation therapy apparatus includes a radiation irradiation unit 35, an X-ray imaging unit 36, a CT imaging device 37, a treatment planning device 38, and a controller 10. The controller 10 includes a CT image deformation amount calculation unit 11, a shape calculation unit 12, an irradiation region determining unit 13, an X-ray image deformation amount calculation unit 14, a position calculation unit 15, a template matching unit 16, a comparison unit 17, a correction unit 18, and an image processing unit 19, and by comparing the positions of a treatment target locus in respective breathing phases and the positions of the treatment target locus in corresponding ones of the respective breathing phases identified by the template matching unit 16, identifies the error values between the positions and the positions identified by the template matching unit 16 for each of parameters.

公开(公告)号：US09724540B2

公开(公告)日：2017-08-08

申请号：US15118614

申请日：2015-02-03

Applicant: SHIMADZU CORPORATION ,  NATIONAL INSTITUTES FOR QUANTUM AND RADIOLOGICAL SCIENCE AND TECHNOLGY

Inventor： Shinichiro Mori ,  Yoshiyuki Yamagishi ,  Yui Torigoe

IPC: A61N5/10

CPC classification number: A61N5/1037 ,  A61B6/032 ,  A61N5/1039 ,  A61N5/1049 ,  A61N5/1077 ,  A61N2005/1061

Abstract: A radiation therapy apparatus includes a radiation irradiation unit 35, an X-ray imaging unit 36, a CT imaging device 37, a treatment planning device 38, and a controller 10. The controller 10 includes a CT image deformation amount calculation unit 11, a shape calculation unit 12, an irradiation region determining unit 13, an X-ray image deformation amount calculation unit 14, a position calculation unit 15, a template matching unit 16, a comparison unit 17, a correction unit 18, and an image processing unit 19, and by comparing the positions of a treatment target locus in respective breathing phases and the positions of the treatment target locus in corresponding ones of the respective breathing phases identified by the template matching unit 16, identifies the error values between the positions and the positions identified by the template matching unit 16 for each of parameters.

公开(公告)号：US10702713B2

公开(公告)日：2020-07-07

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

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.