公开(公告)号：US09633480B2

公开(公告)日：2017-04-25

申请号：US14855540

申请日：2015-09-16

Applicant: FUJIFILM Corporation

Inventor： Jun Enomoto ,  Yasufumi Oda ,  Takashi Tajima ,  Takeshi Kuwabara ,  Daiki Harada ,  Yuichi Hosoi ,  Haruyasu Nakatsugawa

IPC: G06T7/60 ,  A61B6/00 ,  G06T19/00 ,  G06T11/60

CPC classification number: G06T19/006 ,  A61B6/5211 ,  A61B6/5282 ,  G06T7/62 ,  G06T11/008 ,  G06T11/60 ,  G06T2207/10116 ,  G06T2207/30061

Abstract: An image obtaining unit obtains a subject image, a body thickness distribution modifying unit receives input of a virtual model having an estimated body thickness distribution and modifies the estimated body thickness distribution of the virtual model to output the modified estimated body thickness distribution, and a body thickness distribution determining unit determines the outputted estimated body thickness distribution to be used as the body thickness distribution of the subject. The body thickness distribution determining unit includes a judging unit for switching, according to a judgment condition, between a first control under which the body thickness distribution modifying process is iteratively executed until a first termination condition is satisfied and a second control under which the body thickness distribution modifying process is iteratively executed until a second termination condition that is different from the first termination condition is satisfied so that the first control or the second control is executed.

公开(公告)号：US09282939B2

公开(公告)日：2016-03-15

申请号：US14728300

申请日：2015-06-02

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima ,  Yusuke Kitagawa

IPC: G01D18/00 ,  G21K1/00 ,  A61B6/00

CPC classification number: A61B6/4283 ,  A61B6/542 ,  A61B6/56 ,  G01D18/00

Abstract: A cassette holder of an imaging stand is provided with first and second catch members for catching and holding an electronic cassette from above and below. The first catch member has a multi connector connected to a multi terminal of the electronic cassette. The multi connector is offset with respect to a center line of an imaging surface of the cassette holder. The multi terminal is offset with respect to a center line of an irradiation surface of the electronic cassette in the same direction by the same amount as those of the multi connector. In a state where said electronic cassette mounted on a tray is loaded into the cassette holder, the center line of the irradiation surface coincides with the center line of the imaging surface.

公开(公告)号：US09117315B2

公开(公告)日：2015-08-25

申请号：US13933364

申请日：2013-07-02

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima

IPC: G06F3/033 ,  G09G5/08 ,  G06T15/60 ,  A61B6/02 ,  A61B6/12 ,  A61B6/00

CPC classification number: G06T15/60 ,  A61B6/022 ,  A61B6/12 ,  A61B6/463 ,  A61B6/466 ,  A61B6/502

Abstract: When displaying a stereo image of radiographic images, troublesome work for indicating an abnormal shadow with a three-dimensional cursor is reduced. An abnormal shadow detection unit 8c detects abnormal shadows from radiographic images for left and right eyes for displaying a stereo image. When a plurality of abnormal shadows are detected, an abnormal shadow specification unit 8d specifies abnormal shadows corresponding to each other in two radiographic images. A display control unit 8e gives a three-dimensional cursor to a predetermined abnormal shadow of the plurality of abnormal shadows, and displays a stereo image using the radiographic images for left and right eyes.

Abstract translation: 当显示放射线图像的立体图像时，减少了用于指示具有三维光标的异常阴影的麻烦的工作。 异常阴影检测单元8c从用于显示立体图像的左眼和右眼的放射照相图像检测异常阴影。 当检测到多个异常阴影时，异常阴影指定单元8d在两个放射照相图像中指定彼此对应的异常阴影。 显示控制单元8e给出多个异常阴影中的预定异常阴影的三维光标，并且使用左眼和右眼的放射照相图像显示立体图像。

公开(公告)号：US09072485B2

公开(公告)日：2015-07-07

申请号：US14582931

申请日：2014-12-24

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima ,  Yusuke Kitagawa

IPC: G01D18/00 ,  G21K1/00 ,  A61B6/00

CPC classification number: A61B6/4283 ,  A61B6/542 ,  A61B6/56 ,  G01D18/00

Abstract: A cassette holder of an imaging stand is provided with first and second catch members for catching and holding an electronic cassette from above and below. The first catch member has a multi connector connected to a multi terminal of the electronic cassette. The multi connector is offset with respect to a center line of an imaging surface of the cassette holder. The multi terminal is offset with respect to a center line of an irradiation surface of the electronic cassette in the same direction by the same amount as those of the multi connector. In a state where said electronic cassette mounted on a tray is loaded into the cassette holder, the center line of the irradiation surface coincides with the center line of the imaging surface.

公开(公告)号：US12121387B2

公开(公告)日：2024-10-22

申请号：US18045467

申请日：2022-10-11

Applicant: FUJIFILM CORPORATION

Inventor： Takashi Tajima

IPC: A61B6/00 ,  A61B6/42 ,  A61B6/46

CPC classification number: A61B6/5258 ,  A61B6/52 ,  A61B6/4208 ,  A61B6/461

Abstract: An average offset image is acquired without irradiation of a radiation. A first image is acquired when a first time elapses from continuous irradiation with the radiation for imaging a subject on a pixel region. A second image is acquired when a second time longer than the first time elapses from an end of the continuous irradiation. The irradiation with the radiation for imaging the subject is performed on the pixel region after an elapse of the second time from the end of the continuous irradiation and a pixel signal from the pixel region is read out to acquire a radiographic image. An offset image representing an offset component and an afterimage representing an afterimage component according to a time of the continuous irradiation, the first time, the second time, and a defined time are generated based on the first image, the second image, and the average offset image.

公开(公告)号：US10321887B2

公开(公告)日：2019-06-18

申请号：US16040766

申请日：2018-07-20

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima ,  Jun Enomoto ,  Yasufumi Oda ,  Takeshi Kuwabara ,  Daiki Harada ,  Yuichi Hosoi ,  Haruyasu Nakatsugawa

IPC: A61B6/00

Abstract: In an image analysis device, an image analysis method, and a non-transitory computer-readable recording medium, it is determined whether a radiographic image is captured by rocking a rocking imaging grid. The image analysis device includes: a radiographic image acquisition section; a dosage data acquisition section that acquires dosage data indicating, in a time-series manner, a dosage of radiation rays exposed to a specific position in an imaging area in a specific period; and a determining section that determines whether the dosage data has a first feature indicating a dosage variation as a plurality of radiation absorbing bodies and a radiation transmitting body disposed between adjacent radiation absorbing bodies pass through a space between the specific position and a radiation source, and determines that the radiographic image corresponding to the dosage data determined to have the first feature is a rocking grid use image captured by rocking a rocking imaging grid.

公开(公告)号：US10154825B2

公开(公告)日：2018-12-18

申请号：US15050470

申请日：2016-02-23

Applicant: FUJIFILM CORPORATION

Inventor： Jun Enomoto ,  Takashi Tajima ,  Yasufumi Oda ,  Takeshi Kuwabara ,  Daiki Harada ,  Yuichi Hosoi ,  Haruyasu Nakatsugawa

IPC: G01N5/00 ,  G01N23/201 ,  A61B6/00 ,  A61B6/06

Abstract: The present disclosure provides an image processing device including: a scattered radiation correction data acquisition section that acquires scattered radiation correction data as a result of radiation being irradiated onto a radiographic imaging device that images a radiographic image; a pixel region acquisition section that acquires information indicating a size of an effective pixel region of the radiographic imaging device; an exposure range acquisition section that acquires information indicating an imaging exposure range of radiation for imaging an imaging subject with the radiographic imaging device; an image data acquisition section that acquires image data as a result of imaging a radiographic image of the imaging subject; and a correction section that corrects the image data acquired by the image data acquisition section using the scattered radiation correction data, in a case in which the imaging exposure range includes an area outside of the effective pixel region.

公开(公告)号：US10123757B2

公开(公告)日：2018-11-13

申请号：US15375179

申请日：2016-12-12

Applicant: FUJIFILM CORPORATION

Inventor： Takashi Tajima

IPC: G06K9/00 ,  A61B6/00 ,  G06T5/00

Abstract: An overall controller of a console acquires a radiation image of an imaging subject captured by a radiation image capture device for radiographic imaging. The overall controller also acquires body thickness information indicating a body thickness of the imaging subject in a direction in which radiation passes through. The overall controller also adds to the radiation image an assist line image that have would be expected to be obtained if a predetermined member had been disposed and captured at a position inside the imaging subject determined based on the acquired body thickness information, or at a position between the imaging subject and the radiation image capture device.

公开(公告)号：US09793305B2

公开(公告)日：2017-10-17

申请号：US14604939

申请日：2015-01-26

Applicant: FUJIFILM CORPORATION

Inventor： Takashi Tajima ,  Takeshi Kuwabara ,  Yusuke Kitagawa

IPC: G01T1/02 ,  H05G1/38 ,  H05G1/28 ,  H05G1/42 ,  H05G1/44 ,  H01L27/146 ,  H01L27/148 ,  G01T1/16 ,  G01T1/29 ,  H01L27/144 ,  A61B6/00

CPC classification number: H01L27/14603 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/4452 ,  A61B6/542 ,  A61B6/585 ,  G01T1/026 ,  G01T1/1603 ,  G01T1/2985 ,  H01L27/1446 ,  H01L27/14658 ,  H01L27/14812 ,  H05G1/28 ,  H05G1/38 ,  H05G1/42 ,  H05G1/44

Abstract: In capturing an image of a grid by an image detector, a measurement pixel that is not in the position of a specific point having a maximum or minimum value of an output signal is referred to as a first measurement pixel, and a measurement pixel that is in the position of the specific point is referred to as a second measurement pixel. The disposition of the first and second measurement pixels are determined so as to satisfy the following condition: fG/fN≠odd number, wherein fG is a grid frequency and fN is a Nyquist frequency of pixels; and in shifting the grid C times by one pixel, the number of the first measurement pixels is larger than that of the second measurement pixels at any time in the range of a cycle C of a repetition pattern appearing in the image.

公开(公告)号：US09780128B2

公开(公告)日：2017-10-03

申请号：US14604352

申请日：2015-01-23

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima ,  Takeshi Kuwabara ,  Yusuke Kitagawa

IPC: G01T1/02 ,  H05G1/44 ,  H05G1/42 ,  H05G1/38 ,  H05G1/28 ,  H01L27/146 ,  H01L27/148 ,  G01T1/16 ,  H01L27/144 ,  A61B6/00

CPC classification number: H01L27/14603 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/4452 ,  A61B6/542 ,  A61B6/585 ,  G01T1/026 ,  G01T1/1603 ,  H01L27/1446 ,  H01L27/14658 ,  H01L27/14812 ,  H05G1/28 ,  H05G1/38 ,  H05G1/42 ,  H05G1/44

Abstract: An image detector is disposed behind a grid. The image detector has normal pixels and measurement pixels. Out of a group of measurement pixels based on which an average value of dose measurement signals is calculated, a [C/D] number of measurement pixels are disposed or chosen in a cycle Z=(R×C)±D. Wherein, C represents a cycle of a repetition pattern appearing in an arrangement direction of X-ray transparent layers and X-ray absorbing layers in an X-ray image of the grid, and is represented in units of the number of pixels. R represents a natural number of 0 or more. D represents an integer less than the cycle C. [C/D] represents a maximum integer equal to or less than C/D. Provided that at least the [C/D] number of measurement pixels are shifted C occasions by one pixel, if D=1, the average value of the dose measurement signals is invariable without any variations.