公开(公告)号：US10045746B2

公开(公告)日：2018-08-14

申请号：US14637522

申请日：2015-03-04

Applicant: FUJIFILM Corporation

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

IPC: A61N5/10 ,  A61B6/00 ,  G06T5/00

Abstract: In a radiation image processing apparatus, method, and program, performing image processing based on scattered radiation, such as scattered radiation elimination processing, accurately by taking into account the influence of scattered radiation from an area adjacent to a processing target area. For this purpose, performing image processing on a radiation image captured by applying radiation to a subject based on scattered radiation generated by the subject. In this case, a processing target area which is the processing target in the radiation image is added with another area different from the processing target area in the radiation image. Then, the image processing based on scattered radiation is performed on the processing target area using the another area and the processing target area.

公开(公告)号：US09521987B2

公开(公告)日：2016-12-20

申请号：US14511268

申请日：2014-10-10

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima

IPC: H05G1/42 ,  A61B6/00 ,  A61B6/08

CPC classification number: A61B6/542 ,  A61B6/08 ,  A61B6/4283 ,  A61B6/4452 ,  A61B6/547 ,  A61B6/588

Abstract: A console acquires a displacement amount of an X-ray source from a displacement amount detector. In the case where an electronic cassette having an image detector is not appropriately positioned with respect to a body part to be imaged, a position of the X-ray source is changed in accordance with a position of the body part to be imaged. A dose measurement field position determining unit specifies a current relative position between the X-ray source and the electronic cassette having the image detector based on a displacement amount. The dose measurement field position determining unit determines a position of a dose measurement field based on the specified current relative position.

Abstract translation: 控制台从位移量检测器获取X射线源的位移量。 在具有图像检测器的电子盒相对于要成像的身体部分没有适当定位的情况下，X射线源的位置根据要成像的身体部位的位置而改变。 剂量测量场位置确定单元基于位移量来指定X射线源和具有图像检测器的电子盒之间的当前相对位置。 剂量测量场位置确定单元基于指定的当前相对位置来确定剂量测量场的位置。

公开(公告)号：US09232620B2

公开(公告)日：2016-01-05

申请号：US13692542

申请日：2012-12-03

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima

IPC: H05G1/42 ,  G01N23/04 ,  A61B6/00

CPC classification number: A61B6/542 ,  A61B6/4283 ,  A61B6/5294 ,  A61B6/56 ,  G01N23/04 ,  H05G1/42

Abstract: An AEC unit of an electronic cassette sets a dose target value and a short-circuited pixel used for AEC based on a radiographing condition. When a control unit of the electronic cassette detects start of irradiation of X rays, the AEC unit starts integration of a cumulative dose of X rays which are incident to a target region based on a dose detection signal output by the short-circuited pixel. The AEC unit predicts a stop timing at the time point t1, waits until the time point t2 which is a predetermined time earlier than a scheduled stop time, and sends a stop timing notification to an X-ray generation device at the time point t2. When the stop timing notification is received, a X-ray source control device immediately inputs an irradiation stop command so as to stop an operation of an X-ray source.

Abstract translation: 基于放射照相条件，电子盒的AEC单元设置用于AEC的剂量目标值和短路像素。 当电子盒的控制单元检测到X射线的照射开始时，AEC单元基于由短路像素输出的剂量检测信号开始入射到目标区域的X射线的累积剂量的积分。 AEC单元预测在时间点t1的停止定时，等待直到比预定停止时间早的预定时间的时间点t2，并且在时间点t2向X射线产生装置发送停止定时通知。 当接收到停止定时通知时，X射线源控制装置立即输入照射停止命令以停止X射线源的操作。

公开(公告)号：US08971494B2

公开(公告)日：2015-03-03

申请号：US13676255

申请日：2012-11-14

Applicant: FUJIFILM Corporation

Inventor： Takashi Tajima

IPC: H05G1/56 ,  A61B6/00

CPC classification number: A61B6/542 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/548

Abstract: Besides normal pixels, a plurality detection pixels are arranged in an imaging surface of an FPD. In preliminary imaging, X-rays are emitted to an imaged body portion of a patient. The detection pixels receive the X-rays passed through the body portion, and output AEC detection signals. If an integral value of the AEC detection signals has reached a threshold value, X-ray emission is stopped and the preliminary imaging is completed. A main exposure condition determination unit determines a main irradiation time, being an irradiation time with the X-rays during the main imaging, based on an irradiation time with the X-rays during the preliminary imaging and the integral value of the AEC detection signals. The main imaging is performed using the main irradiation time. The normal pixels continue a charge accumulation operation over the preliminary imaging and the main imaging to produce an X-ray image for use in diagnosis.

Abstract translation: 除了正常像素之外，多个检测像素被布置在FPD的成像表面中。 在初步成像中，X射线被发射到患者的成像体部分。 检测像素接收穿过身体部分的X射线，并输出AEC检测信号。 如果AEC检测信号的积分值达到阈值，则X射线发射停止并且完成初步成像。 主曝光条件确定单元基于在初步成像期间的X射线的照射时间和AEC检测信号的积分值来确定作为主成像期间的X射线的照射时间的主照射时间。 使用主要照射时间进行主要成像。 正常像素在初步成像和主要成像上继续电荷累积操作，以产生用于诊断的X射线图像。