公开(公告)号：US20240104729A1

公开(公告)日：2024-03-28

申请号：US18452505

申请日：2023-08-18

Applicant: FUJIFILM Corporation

Inventor： Tomoyuki TAKAHASHI

IPC: G06T7/00 ,  G06T5/50 ,  G06T7/11 ,  G06T7/60

CPC classification number: G06T7/0012 ,  G06T5/50 ,  G06T7/11 ,  G06T7/60 ,  G06T2207/30008

Abstract: A processor acquires a first radiation image and a second radiation image which are acquired by imaging a subject, which includes a first component consisting of a plurality of compositions and a second component consisting of a single composition, with radiation having different energy distributions, derives a characteristic of the first component related to attenuation of the radiation based on the first and second radiation images in a first component region including only the first component in the first or second radiation image, derives the characteristic of the first component in a second component region including the second component in the first or second radiation image based on the characteristic of the first component derived in the first component region around the second component region, and derives a first component image and a second component image in which the first component and the second component are emphasized, respectively, based on the characteristic of the first component in at least a region of the subject in the first or second radiation image.

公开(公告)号：US20230096694A1

公开(公告)日：2023-03-30

申请号：US17823353

申请日：2022-08-30

Applicant: FUJIFILM Corporation

Inventor： Tomoyuki TAKAHASHI

IPC: G06T5/50 ,  G06V10/70

Abstract: A processor derives a first composition image representing a first composition included in a subject including three or more compositions from at least one radiation image acquired by imaging the subject, derives at least one removal radiation image obtained by removing the first composition from the at least one radiation image by using the first composition image, derives a plurality of other composition images representing a plurality of other compositions different from the first composition included in the subject by using the at least one removal radiation image, and derives a composite image obtained by synthesizing the first composition image and the plurality of other composition images at a predetermined ratio.

公开(公告)号：US20200305830A1

公开(公告)日：2020-10-01

申请号：US16831738

申请日：2020-03-26

Applicant: FUJIFILM Corporation

Inventor： Tomoyuki TAKAHASHI

IPC: A61B6/00

Abstract: A radiographic image processing device includes a radiographic image acquisition unit that acquires a radiographic image taken from a subject using radiation, a region discrimination unit that discriminates a plurality of regions using the radiographic image, a scattered radiation component-estimation section that estimates scattered radiation components of the radiation of each region using scattered radiation component-estimation processing varying for each region, a scattered radiation component-subtraction section that subtracts the scattered radiation components of each region, and an image processing unit that generates a scattered radiation component-subtracted image where the scattered radiation components have been subtracted by sequentially estimating and subtracting the scattered radiation components of each region using the scattered radiation component-estimation section and the scattered radiation component-subtraction section.

公开(公告)号：US20160093025A1

公开(公告)日：2016-03-31

申请号：US14868704

申请日：2015-09-29

Applicant: FUJIFILM Corporation

Inventor： Tomoyuki TAKAHASHI

IPC: G06T5/00 ,  G06T7/00

CPC classification number: G06T5/10 ,  G06T5/008 ,  G06T2207/10116 ,  G06T2207/20012 ,  G06T2207/20016 ,  G06T2207/20064

Abstract: Information indicating the correspondence relationship of imaging conditions, the thickness of an object, and the thickness of a specific composition included in the object, and a contrast correction amount is stored. The thickness of the object and the thickness of a specific composition included in the object of each unit region having one or two or more pixels of the radiation image are acquired. For each unit region of the radiation image, a contrast correction amount corresponding to a combination of the imaging conditions, the thickness of the object acquired for the unit region, and the thickness of the specific composition is acquired with reference to the stored information indicating the correspondence relationship, and contrast correction is performed using the acquired contrast correction amount.

Abstract translation: 存储指示成像条件的对应关系，物体的厚度和包括在物体中的特定合成物的厚度的信息和对比度校正量。 获取包含在具有放射线图像的一个或两个以上像素的每个单位区域的对象物中的物体的厚度和厚度。 对于放射线图像的每个单位区域，参考存储的指示所述单位区域的信息，获取对应于成像条件的组合，针对单位区域获取的对象的厚度和特定构图的厚度的对比度校正量 使用所获取的对比度校正量执行对应关系和对比度校正。

公开(公告)号：US20220079543A1

公开(公告)日：2022-03-17

申请号：US17534825

申请日：2021-11-24

Applicant: FUJIFILM Corporation

Inventor： Tomoyuki TAKAHASHI

IPC: A61B6/00

Abstract: A radiation image processing device includes: a first estimation section that estimates components of radiation Ra having passed through a subject Obj using a first radiation image taken from the subject Obj; a second estimation section that estimates components of the radiation Ra, which have passed through an additional scattering element EL, using an estimation result of the first estimation section and scattering characteristics f2(X) of the additional scattering element EL; and a first image generation section that generates a second radiation image, which has been transmitted through the subject Obj and the additional scattering element EL, using an estimation result of the second estimation section.

公开(公告)号：US20150055752A1

公开(公告)日：2015-02-26

申请号：US14509995

申请日：2014-10-08

Applicant: FUJIFILM Corporation

Inventor： Tomoyuki TAKAHASHI ,  Masahiko YAMADA ,  Sadato AKAHORI

IPC: H05G1/30 ,  A61B6/00

CPC classification number: H05G1/30 ,  A61B6/4233 ,  A61B6/542 ,  H04N5/2353 ,  H04N5/32 ,  H04N5/361

Abstract: An X-ray exposure control device comprises: an X-ray detection element including a plurality of pixels for dose detection each detecting a dose during X-ray radiation; a region setting unit configured to set a use pixel region including pixels for use in dose detection from the plurality of pixels for dose detection during the X-ray radiation; a signal generating unit configured to generate a stop signal for stopping the X-ray radiation from an X-ray source according to the dose detected by each of the pixels for use in the dose detection within the use pixel region set by the region setting unit; and a transmission unit configured to transmit to the X-ray source the stop signal to stop the X-ray radiation as generated by the signal generating unit.

Abstract translation: X射线曝光控制装置包括：X射线检测元件，其包括用于在X射线辐射期间检测剂量的用于剂量检测的多个像素; 区域设定单元，被配置为在所述X射线辐射期间，从所述多个像素中设定包括用于剂量检测的像素的使用像素区域用于剂量检测; 信号生成单元，其被配置为根据由所述区域设定单元设定的使用像素区域内的所述剂量检测中使用的各像素检测出的剂量，生成用于停止来自X射线源的X射线照射的停止信号 ; 以及发送单元，被配置为向所述X射线源发送停止信号以停止由所述信号生成单元产生的所述X射线辐射。

公开(公告)号：US20250102690A1

公开(公告)日：2025-03-27

申请号：US18887043

申请日：2024-09-17

Applicant: FUJIFILM CORPORATION

Inventor： Tomoyuki TAKAHASHI

IPC: G01T1/29 ,  G06T5/50 ,  G06T5/73

Abstract: A processor acquires a first radiation image and a second radiation image which are acquired by imaging a subject, based on radiation having different energy distributions, performs sharpness conversion processing on at least one of the first radiation image or the second radiation image to make sharpness of the first radiation image and the second radiation image uniform, and derives a component image in which a specific component in the subject is emphasized, based on the first radiation image and the second radiation image which are subjected to the sharpness conversion processing.

公开(公告)号：US20250090119A1

公开(公告)日：2025-03-20

申请号：US18887046

申请日：2024-09-17

Applicant: FUJIFILM CORPORATION

Inventor： Tomoyuki TAKAHASHI

IPC: A61B6/50 ,  A61B6/00 ,  G06T7/00 ,  G16H50/20

Abstract: A processor specifies a target bone, which is a target of state evaluation of a bone, from a radiation image of a subject, determines whether or not the state evaluation of the bone is possible based on a specification result of the target bone, derives an evaluation result by performing the state evaluation of the bone using the target bone in a case in which it is determined that the state evaluation of the bone is possible, and performs the state evaluation of the bone by changing an evaluation method in a case in which it is determined that the state evaluation of the bone is not possible.

公开(公告)号：US20180061023A1

公开(公告)日：2018-03-01

申请号：US15638380

申请日：2017-06-30

Applicant: FUJIFILM Corporation

Inventor： Keigo NAKAMURA ,  Tomoyuki TAKAHASHI

IPC: G06T5/00 ,  G06T7/11 ,  G06T7/136

CPC classification number: G06T5/007 ,  G06T5/40 ,  G06T7/11 ,  G06T7/136 ,  G06T2207/10116

Abstract: A density region setting unit sets a specific density region having a preset width with respect to a subject region of a radiation image. A compression processing unit performs a dynamic range compression process with respect to the radiation image on the basis of a first compression amount for compressing at least one of the maximum value or the minimum value among pixel values of the subject region into the specific density region and a preset second compression amount for compressing at least one of a high-density region or a low-density region in the specific density region, to generate a dynamic range compression image.

公开(公告)号：US20160171691A1

公开(公告)日：2016-06-16

申请号：US15051883

申请日：2016-02-24

Applicant: FUJIFILM Corporation

Inventor： Keigo NAKAMURA ,  Tomoyuki TAKAHASHI

IPC: G06T7/00 ,  G06K9/46 ,  A61B6/00

CPC classification number: G06T7/0012 ,  A61B6/505 ,  A61B6/5211 ,  G06K9/4604 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/10116 ,  G06T2207/20008 ,  G06T2207/30008

Abstract: A partial region extraction unit extracts a partial region including a distal portion in the vicinity of a boundary between a subject region including the distal portion and a void region from a radiological image including the distal portion of the human body. A designation region determination unit determines at least one of the void region and the partial region as a designation region for designating the partial region.

Abstract translation: 局部区域提取单元从包括人体的远端部分的放射学图像中提取包括远侧部分在内的包括远侧部分和空白区域的对象区域之间的边界附近的部分区域。 指定区域确定单元将空隙区域和部分区域中的至少一个确定为用于指定部分区域的指定区域。