公开(公告)号：US20150182182A1

公开(公告)日：2015-07-02

申请号：US14659763

申请日：2015-03-17

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA

IPC: A61B6/00

CPC classification number: A61B6/542 ,  A61B6/4208 ,  A61B6/4283 ,  A61B6/469 ,  A61B6/544 ,  H04N5/32

Abstract: A sensor panel of an electronic cassette includes detection pixels each for outputting a dose signal corresponding to a dose of X-rays, an irradiation start judging section for judging whether or not X-ray irradiation has been started based on the dose signal, and an AEC section for judging whether or not an accumulated dose of X-rays has reached a target dose based on the dose signal. A gain setting section sets a gain of an integration amplifier in the case of using the irradiation start judging section lower than that in the case of using the AEC section.

Abstract translation: 电子盒的传感器面板包括各自用于输出与X射线剂量对应的剂量信号的检测像素，用于根据剂量信号判断X射线照射是否开始的照射开始判断部， AEC部分，用于基于剂量信号判断X射线的累积剂量是否达到目标剂量。 在使用照射开始判定部的情况下，比使用AEC部的情况低的情况下，增益设定部设定积分放大器的增益。

公开(公告)号：US20140177798A1

公开(公告)日：2014-06-26

申请号：US14191843

申请日：2014-02-27

Applicant: FUJIFILM Corporation

Inventor： Yusuke KITAGAWA ,  Takeshi KAMIYA ,  Takeshi KUWABARA ,  Takashi TAJIMA

IPC: A61B6/00

CPC classification number: A61B6/542 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/545 ,  A61B6/548 ,  A61B6/56 ,  A61B6/58

Abstract: A communication section having a relatively high communication speed is used for communicating a detection signal or an emission stop signal between a source control device and an electronic cassette. The detection signal is outputted from a detection pixel of the electronic cassette. The emission stop signal depends on a comparison result between an integrated value of the detection signal and an emission stop threshold value. On the other hand, a wireless communication section having a lower communication speed than that of the detection signal and the emission stop signal is used for communicating image data and the like between the electronic cassette and a console.

Abstract translation: 具有较高通信速度的通信部分用于在源极控制装置和电子盒之间传送检测信号或发射停止信号。 检测信号从电子盒的检测像素输出。 发射停止信号取决于检测信号的积分值与发光停止阈值之间的比较结果。 另一方面，具有比检测信号和发射停止信号低的通信速度的无线通信部分用于在电子盒式磁带和控制台之间传送图像数据等。

公开(公告)号：US20130251106A1

公开(公告)日：2013-09-26

申请号：US13793742

申请日：2013-03-11

Applicant: FUJIFILM CORPORATION

Inventor： Takashi TAJIMA

IPC: H05G1/44 ,  A61B6/00

CPC classification number: H05G1/44 ,  A61B6/4233 ,  A61B6/467 ,  A61B6/542 ,  A61B6/548

Abstract: An AEC section of an electronic cassette includes a measurement area setting circuit for setting a measurement area in an imaging surface. The measurement area setting circuit is switchable between a specified area mode and an automatic area setting mode. In the specified area mode, a first measurement area is set up in a position predetermined in accordance with a body part to be imaged. In the automatic area setting mode, a second measurement area is set up based on the distribution of an X-ray dose measured by measuring pixels. X-ray emission time is shortened in the specified area mode, because the setting of the first measurement area is quickly performed. The automatic area setting mode eliminates the need for troublesome positioning between a patient and an FPD.

Abstract translation: 电子盒的AEC部分包括用于设置成像表面中的测量区域的测量区域设置电路。 测量区域设置电路可以在指定区域模式和自动区域设置模式之间切换。 在指定区域模式中，将第一测量区域设置在根据要成像的身体部分预定的位置。 在自动区域设定模式中，基于通过测量像素测量的X射线剂量的分布来建立第二测量区域。 由于快速执行第一测量区域的设置，因此在指定区域模式中X射线发射时间缩短。 自动区域设置模式消除了对病人和FPD之间麻烦的定位的需要。

公开(公告)号：US20250072850A1

公开(公告)日：2025-03-06

申请号：US18815377

申请日：2024-08-26

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA

IPC: A61B6/12 ,  A61B6/00 ,  A61B6/04 ,  A61B6/50

Abstract: A medical image acquisition apparatus including: a biopsy apparatus; an imaging table that is used to capture an image of a living body disposed on an imaging surface with an imaging apparatus; a projector that projects the image; and at least one processor, wherein the processor performs control of projecting relevant information associated with each execution stage of a biopsy that is performed on the living body using the biopsy apparatus, from the projector toward the imaging surface of the imaging table for each execution stage.

公开(公告)号：US20240065644A1

公开(公告)日：2024-02-29

申请号：US18448982

申请日：2023-08-14

Applicant: FUJIFILM CORPORATION

Inventor： Sho SHIMIZUKAWA ,  Takashi TAJIMA ,  Tatsuya TANEICHI ,  Naoyuki NISHINO ,  Hisatsugu HORIUCHI

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B6/4014 ,  A61B6/4078 ,  A61B6/5241 ,  A61B6/54

Abstract: An imaging control unit performs conventional scanning, which directs a rotation mechanism to rotate a radiation source and a radiation detector without changing a positional relationship between a subject, and the radiation source and the radiation detector in a rotation axis direction, directs the radiation source to emit radiation whenever the radiation source and the radiation detector are rotated by a preset angle, and directs the radiation detector to output a projection image, at a plurality of height positions along the rotation axis direction. The image processing unit generates a tomographic image on the basis of the projection images obtained at the plurality of height positions.

公开(公告)号：US20230122938A1

公开(公告)日：2023-04-20

申请号：US18045467

申请日：2022-10-11

Applicant: FUJIFILM CORPORATION

Inventor： Takashi TAJIMA

IPC: A61B6/00

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：US20220346743A1

公开(公告)日：2022-11-03

申请号：US17720246

申请日：2022-04-13

Applicant: FUJIFILM CORPORATION

Inventor： Takashi TAJIMA ,  Munetaka KATO ,  Masakazu FUKUYO ,  Takeyasu KOBAYASHI ,  Hisatsugu HORIUCHI

IPC: A61B6/00 ,  A61B6/03

Abstract: A CT apparatus includes an annular frame that rotates around a subject positioned in a bore, three columns that hold the frame to be rotatable and movable up and down in a vertical, an elevation mechanism that moves up and down the frame, and a rotation mechanism that rotates the frame. A radiation source and a radiation detector are attached to the frame at positions facing each other. The frame has a width smaller than a width of the radiation source and the radiation detector in a height direction over a whole periphery. An imaging controller performs control for operating the elevation mechanism in response to a return instruction from an operator to move the frame to a retreat height position set at a position of a highest point in an elevation range of the frame on an upper end side of the columns. The imaging controller performs control for operating the rotation mechanism in response to the return instruction from the operator to rotate the frame to a position of 60° that is a first rotation position where the radiation source overlaps the columns.

公开(公告)号：US20180344280A1

公开(公告)日：2018-12-06

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

CPC classification number: A61B6/5282 ,  A61B6/4291 ,  A61B6/5211

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：US20180333126A1

公开(公告)日：2018-11-22

申请号：US15974703

申请日：2018-05-09

Applicant: FUJIFILM CORPORATION

Inventor： Takashi TAJIMA

IPC: A61B6/00 ,  G06T7/11 ,  G06T5/50

CPC classification number: A61B6/54 ,  A61B6/461 ,  A61B6/482 ,  A61B6/505 ,  G06T5/50 ,  G06T7/11 ,  G06T2207/10116 ,  G06T2207/20224 ,  G06T2207/30008 ,  G06T2207/30024

Abstract: A control unit of a console performs a control process of displaying a plurality of images predetermined from at least one of a first radiographic image or a second radiographic image as a simple image, a bone part ES image which is a difference image between the first radiographic image and the second radiographic image and in which a bone tissue is highlighted, a soft part ES image which is a difference image between the first radiographic image and the second radiographic image and in which a soft tissue is highlighted, and a DXA image on a display unit while switching the images and a control process of displaying a derivation result of the bone density and a derivation region on the display unit.

公开(公告)号：US20180333118A1

公开(公告)日：2018-11-22

申请号：US15974720

申请日：2018-05-09

Applicant: FUJIFILM CORPORATION

Inventor： Takashi TAJIMA

IPC: A61B6/00 ,  G06T7/11 ,  G06T5/50

CPC classification number: A61B6/482 ,  A61B6/4266 ,  A61B6/461 ,  A61B6/505 ,  A61B6/5217 ,  A61B6/54 ,  G06T5/50 ,  G06T7/0014 ,  G06T7/11 ,  G06T2207/10116 ,  G06T2207/10152 ,  G06T2207/20224 ,  G06T2207/30008 ,  G06T2207/30024

Abstract: A control unit acquires first radiographic image data and second radiographic image data and derives bone density from an image of a derivation region of a DXA image which is a difference image between a first radiographic image and a second radiographic image. Then, the control unit derives an evaluation value of the accuracy of derivation of the bone density, on the basis of at least one of the first radiographic image, the second radiographic image, and a bone part ES image, a soft part ES image, and a DXA image which are generated using the first radiographic image and the second radiographic image.