公开(公告)号：US20160081648A1

公开(公告)日：2016-03-24

申请号：US14842992

申请日：2015-09-02

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.

Abstract translation: 在图像分析装置，图像分析方法和非暂时计算机可读记录介质中，通过摇摆摇摄成像网格来确定是否拍摄放射线图像。 图像分析装置包括：放射线图像获取部; 剂量数据获取部，其以时间序列方式获取在特定时期内暴露于成像区域中的特定位置的放射线的剂量的剂量数据; 以及确定部，其确定所述剂量数据是否具有指示剂量变化的第一特征作为多个辐射吸收体，并且设置在相邻的辐射吸收体之间的辐射透射体穿过所述特定位置和辐射源之间的空间，以及 确定与确定具有第一特征的剂量数据相对应的放射线照相图像是摇摆摇摄成像网格捕​​获的摇摆网格使用图像。

公开(公告)号：US20150245808A1

公开(公告)日：2015-09-03

申请号：US14631844

申请日：2015-02-26

Applicant: FUJIFILM CORPORATION

Inventor： Takeshi KUWABARA

IPC: A61B6/00

CPC classification number: A61B6/54 ,  A61B6/4208 ,  A61B6/4233 ,  A61B6/4266 ,  A61B6/5258 ,  A61B6/542 ,  A61B6/548 ,  A61B6/56 ,  A61B6/566

Abstract: A radiographic imaging system includes plural radiographic imaging devices that image a same subject. The radiographic imaging device includes: a radiation detector; a detection unit that detects whether or not application of the radiation has been started based on electrical signals indicating detection results of sensors that detect the application of the radiation and that are disposed in correspondence to the radiation detector; a determination unit that determines whether or not noise is superimposed on the electrical signals after the detection unit has detected whether or not the application of the radiation has been started; and a communication unit that is connected to another radiographic imaging device and transmits to and receives from the other connected radiographic imaging device a detection result signal indicating the detection result of the detection unit and a determination result signal indicating the determination result of the determination unit.

Abstract translation: 射线照相成像系统包括对相同被摄体成像的多个放射线照相成像装置。 射线照相成像装置包括：放射线检测器; 检测单元，其基于指示检测到所述辐射的应用的传感器的检测结果的电信号，并且对应于所述放射线检测器而设置，检测是否已经开始施加所述辐射; 确定单元，其在检测单元已经检测到辐射的应用是否已经开始之后确定噪声是否叠加在电信号上; 以及通信单元，其连接到另一射线照相成像装置，并且从另一连接的射线照相成像装置发送和指示检测结果信号，所述检测结果信号指示检测单元的检测结果，以及确定结果信号指示确定单元的确定结果。

公开(公告)号：US20180333121A1

公开(公告)日：2018-11-22

申请号：US15980752

申请日：2018-05-16

Applicant: FUJIFILM CORPORATION

Inventor： Takeshi KUWABARA ,  Yasufumi ODA ,  Haruyasu NAKATSUGAWA

IPC: A61B6/00 ,  G01T1/20

CPC classification number: A61B6/505 ,  A61B6/4208 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/4266 ,  A61B6/482 ,  A61B6/5205 ,  G01T1/2018

Abstract: Provided are a radiography system, a radiography method, a radiography program, and a body thickness estimation apparatus that can estimate the body thickness of a subject using each of radiographic images generated by irradiation with radiations having different energy levels.A radiography system includes a radiography apparatus including two radiation detectors and a console including an estimation unit that estimates the body thickness of a subject on the basis of the ratio of pixel values in a region, which corresponds to a soft tissue of the subject and is a corresponding region of radiographic images generated by the two radiation detectors irradiated with radiations having different energy levels, and correspondence relationship information in which the ratio and the body thickness are associated with each other.

公开(公告)号：US20180228459A1

公开(公告)日：2018-08-16

申请号：US15954741

申请日：2018-04-17

Applicant: FUJIFILM Corporation

Inventor： Yasufumi ODA ,  Jun ENOMOTO ,  Ryou IMAMURA ,  Takashi TAJIMA ,  Kentaro NOMA ,  Takeshi KUWABARA ,  Tetsuya TSUJI ,  Hiroaki YASUDA ,  Haruyasu NAKATSUGAWA ,  Takeshi KOISHI

IPC: A61B6/00

CPC classification number: A61B6/54 ,  A61B6/465 ,  A61B6/467 ,  A61B6/5211 ,  A61B6/542

Abstract: Disclosed is a technique capable of enhancing usability of a radiographic image capturing apparatus, system, control method of the radiographic image capturing apparatus and a non-transitory computer readable recording medium recorded with a control program, for a user. A radiographic image capturing apparatus includes: an I/F unit and an imaging control unit that function as a communication unit that selectively performs communication with any one of a portable information terminal and a console which are plural control apparatuses that have different image processing capacities with respect to a radiographic image and respectively perform a control relating to capturing of the radiographic image; and an imaging control unit that functions as a selection unit that selects any one of plural imaging modes predetermined with respect to the capturing of the radiographic image according to the image processing capacity of the control apparatus that performs communication with the communication unit.

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：US20130182823A1

公开(公告)日：2013-07-18

申请号：US13736826

申请日：2013-01-08

Applicant: FUJIFILM CORPORATION

Inventor： Takeshi KUWABARA

IPC: A61B6/00

CPC classification number: A61B6/542 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/467

Abstract: An X-ray imaging apparatus has an electronic cassette, in which an FPD device receives X-rays applied by an X-ray source to a body, and stores charge according to a radiation dose of the X-rays, to create an image. A control unit controls the FPD device. A radiation sensor detects the radiation dose to be used for controlling the FPD device. A magnet as fastening device secures the radiation sensor removably in a radiation path between the X-ray source and the body. Also, an evaluation unit recognizes a start and end of application of the X-rays according to a dose signal from the radiation sensor, for the control unit to control the FPD device. A flexible support arm is disposed between the radiation sensor and the magnet, for keeping the radiation sensor in a changeable position relative to the magnet.

Abstract translation: X射线成像装置具有电子盒，其中FPD装置将由X射线源施加的X射线接收到身体，并且根据X射线的辐射剂量存储电荷以产生图像。 控制单元控制FPD设备。 辐射传感器检测用于控制FPD装置的辐射剂量。 作为紧固装置的磁体将辐射传感器可拆卸地固定在X射线源和身体之间的辐射路径中。 此外，评估单元根据来自辐射传感器的剂量信号来识别X射线的应用的开始和结束，以便控制单元控制FPD设备。 柔性支撑臂设置在辐射传感器和磁体之间，用于将辐射传感器保持在相对于磁体的可变位置。

公开(公告)号：US20180031715A1

公开(公告)日：2018-02-01

申请号：US15647266

申请日：2017-07-12

Applicant: FUJIFILM Corporation

Inventor： Takeshi KUWABARA

IPC: G01T1/20 ,  G01T7/00 ,  A61B6/00

CPC classification number: G01T1/2018 ,  A61B6/4233 ,  A61B6/4266 ,  A61B6/482 ,  A61B6/505 ,  A61B6/5235 ,  G01T7/00 ,  H04N5/32

Abstract: A radiography system includes: a radiography apparatus including a first radiation detector and a second radiation detector which is provided so as to be stacked on the side of the first radiation detector from which the radiation is transmitted and emitted; and an integrated control unit that specifies a predetermined time related to the emission of the radiation, on the basis of a first detection result that is a detection result of a predetermined time related to the emission of the radiation using a first electric signal output from the first radiation detector and a second detection result that is a detection result of a predetermined time related to the emission of the radiation using a second electric signal output from the second radiation detector.

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：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.