公开(公告)号：US20240099676A1

公开(公告)日：2024-03-28

申请号：US18474172

申请日：2023-09-25

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA

IPC: A61B6/00 ,  A61B6/04 ,  A61B10/02

CPC classification number: A61B6/4291 ,  A61B6/0407 ,  A61B6/488 ,  A61B6/502 ,  A61B10/0233

Abstract: A protective cover includes a flat plate-like protective member, and a scattered ray removal grid, in which the scattered ray removal grid is a grid in which a plurality of transmission parts that transmit the radiation and a plurality of absorption parts that absorb the radiation are alternately arranged and a boundary line between the transmission part and the absorption part extends in one direction, and further, in a case in which, on the imaging surface, a direction connecting a chest wall side and a side opposite to the chest wall is defined as a first direction and a direction orthogonal to the first direction is defined as a second direction, the scattered ray removal grid is disposed at a facing position that faces the imaging surface in a posture in which a direction in which the boundary line extends is parallel to the second direction.

公开(公告)号：US20230019809A1

公开(公告)日：2023-01-19

申请号：US17807383

申请日：2022-06-17

Applicant: FUJIFILM CORPORATION

Inventor： Hisatsugu HORIUCHI ,  Takashi TAJIMA ,  Masakazu FUKUYO ,  Naoyuki NISHINO ,  Takeyasu KOBAYASHI

IPC: G01T7/00 ,  G01T1/20

Abstract: A radiation detector includes a support table, a sensor panel, a fixing member, and a contact member. An attachment surface having an arc surface shape is formed in the support table. The sensor panel has an imaging region in which a plurality of pixels detecting radiation are two-dimensionally arranged. A first surface of the sensor panel is attached to the attachment surface following the arc surface shape. The fixing member partially fixes the first surface to the attachment surface. The contact member comes into contact with a second surface of the sensor panel which is opposite to the first surface to suppress the lifting of the sensor panel from the support table.

公开(公告)号：US20210030379A1

公开(公告)日：2021-02-04

申请号：US16940715

申请日：2020-07-28

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA ,  Takeyasu KOBAYASHI ,  Masayoshi MATSUURA

IPC: A61B6/00

Abstract: A radiation source includes: a plurality of radiation tubes that generates radiations; an interval change mechanism that changes an interval between the radiation tubes; and irradiation direction change mechanisms that change irradiation directions in which the radiation tubes emit the radiations.

公开(公告)号：US20200054301A1

公开(公告)日：2020-02-20

申请号：US16665787

申请日：2019-10-28

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA

IPC: A61B6/00 ,  A61B6/12

Abstract: A radiographic imaging system includes a portable information terminal 16 and a console 18 which are plural control devices of which each one performs a control relating to imaging of a radiographic image and of which at least one is selectively used; and a terminal control unit 30 of the portable information terminal 16 and a control unit 50 of the console 18 that respectively function as a setting unit that sets, with respect to at least one of usage control devices which is control device to be selectively used, control content based on one usage control device in a case where the number of usage control devices is one, and sets control content based on a combination of plural usage control devices in a case where the number of usage control devices is plural.

公开(公告)号：US20150189194A1

公开(公告)日：2015-07-02

申请号：US14637080

申请日：2015-03-03

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA

IPC: H04N5/32 ,  G01T1/17 ,  G01N23/04

CPC classification number: A61B6/488 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/52 ,  A61B6/5264 ,  A61B6/542 ,  A61B6/585 ,  G01T1/026 ,  H04N5/32

Abstract: In an X-ray imaging system, first X-ray irradiation and second X-ray irradiation are performed in performing X-ray imaging once. A preview producing circuit subjects first image data outputted from a sensor panel after the first X-ray irradiation is finished to binning processing or thinning processing to produce a preview image. The produced image is transmitted through a communication I/F to a console while the sensor panel performs an accumulation operation in the second X-ray irradiation. The preview image is displayed on a monitor of the console in the second X-ray irradiation.

Abstract translation: 在X射线成像系统中，在进行X射线成像一次时进行第一X射线照射和第二X射线照射。 在第一次X射线照射完成之后，预览产生电路对从传感器面板输出的第一图像数据进行合并处理或间隔处理以产生预览图像。 所产生的图像通过通信I / F发送到控制台，同时传感器面板在第二X射线照射中执行累积操作。 在第二次X光照射中，预览图像显示在控制台的监视器上。

公开(公告)号：US20150164458A1

公开(公告)日：2015-06-18

申请号：US14606764

申请日：2015-01-27

Applicant: FUJIFILM CORPORATION

Inventor： Takashi TAJIMA

IPC: A61B6/00

CPC classification number: H01L27/14605 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/542 ,  A61B6/563 ,  G01T1/1603 ,  G01T7/005 ,  H01L27/14603 ,  H01L27/14607 ,  H01L27/14634 ,  H04N5/32 ,  H05G1/28 ,  H05G1/38 ,  H05G1/44

Abstract: A sensor panel of an electric cassette is provided with detection pixels for AEC to stop X-ray irradiation when an accumulated dose of the X-rays reaches a target dose. A plurality of small blocks each containing a plurality of the detection pixels for calculating the accumulated dose are disposed in each of a plurality of large blocks obtained by dividing an imaging area. The small blocks are disposed so as not to be overlapped with each other in a Y direction.

Abstract translation: 当X射线的累积剂量达到目标剂量时，电盒的传感器面板设置有用于AEC的检测像素以停止X射线照射。 通过划分摄像区域而获得的多个大块中的每一个中设置有多个小块，每个小块包含用于计算累积剂量的多个检测像素。 这些小块被设置为在Y方向上彼此不重叠。

公开(公告)号：US20150139398A1

公开(公告)日：2015-05-21

申请号：US14604939

申请日：2015-01-26

Applicant: FUJIFILM CORPORATION

Inventor： Takashi TAJIMA ,  Takeshi KUWABARA ,  Yusuke KITAGAWA

IPC: 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.

Abstract translation: 在通过图像检测器捕获网格的图像时，不在具有输出信号的最大值或最小值的特定点的位置的测量像素被称为第一测量像素，并且测量像素是 在该特定位置的位置被称为第二测量像素。 确定第一和第二测量像素的配置以满足以下条件：fG / fN≠奇数，其中fG是网格频率，fN是像素的奈奎斯特频率; 并且在将格栅C乘以一个像素时，在图像中出现的重复图案的周期C的范围内，第一测量像素的数量大于第二测量像素的数量。

公开(公告)号：US20150030129A1

公开(公告)日：2015-01-29

申请号：US14511440

申请日：2014-10-10

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA ,  Takeshi KUWABARA ,  Yusuke KITAGAWA

IPC: A61B6/00

CPC classification number: A61B6/4291 ,  A61B6/4208 ,  A61B6/4283 ,  A61B6/542 ,  G21K1/02 ,  H05G1/44

Abstract: A detection panel has a plurality of pixels for accumulating electric charge by receiving X-rays, and a plurality of detection pixels for detecting an X-ray dose in an imaging surface. The detection pixels are disposed periodically with leaving space. A grid, which has X-ray absorbing portions and X-ray transmitting portions alternately and periodically arranged in a first direction, is disposed in a position opposed to the imaging surface. Since an arrangement period of the detection pixels in the first direction is different from an arrangement period of the X-ray absorbing portions, an output value of each detection pixel is distributed and hence the average of the output values has a reduced variation range.

Abstract translation: 检测面板具有用于通过接收X射线积累电荷的多个像素和用于检测成像表面中的X射线剂量的多个检测像素。 检测像素周期性地设置有留出空间。 具有沿着第一方向交替且周期性排列的X射线吸收部分和X射线透射部分的栅格设置在与成像表面相对的位置。 由于第一方向上的检测像素的排列周期与X射线吸收部的排列周期不同，所以每个检测像素的输出值分布，因此输出值的平均值具有减小的变化范围。

公开(公告)号：US20140205066A1

公开(公告)日：2014-07-24

申请号：US14225762

申请日：2014-03-26

Applicant: FUJIFILM Corporation

Inventor： Yusuke KITAGAWA ,  Takashi TAJIMA ,  Keita WATANABE ,  Takeshi KAMIYA

IPC: A61B6/00

CPC classification number: A61B6/542 ,  A61B6/025 ,  A61B6/06 ,  A61B6/08 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/505 ,  A61B6/5241 ,  A61B6/547 ,  G01T1/2018 ,  G03B42/02 ,  H04N5/32

Abstract: A measurement area selection circuit has an irradiation field determination unit, an object area determination unit, and a measurement area determination unit. The irradiation field determination unit determines an irradiation field of an imaging surface of an FPD. The object area determination unit determines an object area from a comparison result between a first expected received dose of a directly exposed area and dose detection signals of detection pixels situated in the irradiation field. The measurement area determination unit determines a measurement area, which corresponds to a region of interest, from a comparison result between a second expected received dose of the measurement area and the dose detection signals of the detection pixels situated in the irradiation area and the object area. The dose detection signals of the detection pixels situated in the measurement area are used for AEC.

Abstract translation: 测量区域选择电路具有照射场确定单元，对象区域确定单元和测量区域确定单元。 照射场确定单元确定FPD的成像表面的照射场。 对象区域确定单元从直接曝光区域的第一预期接收剂量与位于照射场中的检测像素的剂量检测信号之间的比较结果确定对象区域。 测量区域确定单元从测量区域的第二预期接收剂量与位于照射区域中的检测像素的剂量检测信号与对象区域之间的比较结果中确定与感兴趣区域相对应的测量区域 。 位于测量区域的检测像素的剂量检测信号用于AEC。

公开(公告)号：US20140056408A1

公开(公告)日：2014-02-27

申请号：US14010320

申请日：2013-08-26

Applicant: FUJIFILM Corporation

Inventor： Takashi TAJIMA

IPC: A61B6/00

CPC classification number: A61B6/542 ,  A61B6/4283 ,  A61B6/467 ,  A61B6/469 ,  A61B6/586 ,  G01T1/2018

Abstract: An X-ray imaging system or radiographic imaging system includes a radiation generating apparatus and a radiographic imaging apparatus. An ionization chamber device is external to the radiographic imaging apparatus, for detecting a dose of the radiation transmitted through an object. Dose sensors are incorporated in the radiographic imaging apparatus, for detecting a dose of the radiation transmitted through the object. An exposure control unit is disposed with the radiation generating apparatus, for shutting off application of the radiation from the radiation generating apparatus according to a detection signal from the ionization chamber device or dose sensors. The ionization chamber device is communicably coupled with the radiation generating apparatus. An operating state of the ionization chamber device and dose sensors is acquired by monitoring, so failure of simultaneous inputting of their detection signals to the exposure control unit is prevented.

Abstract translation: X射线成像系统或射线照相成像系统包括放射线产生装置和射线照相成像装置。 电离室装置在射线照相成像装置的外部，用于检测透过物体的辐射剂量。 剂量传感器被结合在射线照相成像设备中，用于检测透过物体的辐射剂量。 曝光控制单元与辐射发生装置一起设置，用于根据来自电离室装置或剂量传感器的检测信号来关闭来自辐射发生装置的辐射的施加。 电离室装置与辐射发生装置可通信地耦合。 通过监视获取电离室装置和剂量传感器的操作状态，因此防止了将其检测信号同时输入到曝光控制单元的故障。