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1. 发明授权

US10231688B2 Radiation image analysis device, method, and program 有权
公开(公告)号：US10231688B2
公开(公告)日：2019-03-19
申请号：US14868725
申请日：2015-09-29
申请人： FUJIFILM Corporation
发明人： Satoshi Naito , Takahiro Kawamura
IPC分类号： A61B6/00 , A61B8/08
摘要： The distance between the radiation source and an object (SOD value) is acquired, distance dependent information which is obtained from a radiation image and changes with the distance between a radiation source and a radiation detector (SID value) is acquired, a temporary thickness of the object is determined by a first function representing the correspondence relationship of first information having at least one piece of the distance dependent information, the SID value, and the thickness of the object, and the temporary SID value is determined by adding the SOD value to the determined value. The thickness of the object is determined by a second function representing the correspondence relationship of second information having at least one piece of the distance dependent information, the SID value, and the thickness of the object, and the SID value is determined by adding the SOD value to the determined value.

2. 发明授权

US09679368B2 Radiographic image processing device, radiographic image processing method, and recording medium 有权
公开(公告)号：US09679368B2
公开(公告)日：2017-06-13
申请号：US15398262
申请日：2017-01-04
申请人： FUJIFILM Corporation
发明人： Satoshi Naito , Takahiro Kawamura
IPC分类号： G06K9/00 , G06T5/00 , A61B6/00 , G06T7/00
CPC分类号： G06T5/009 , A61B6/5205 , A61B6/5282 , G01N23/04 , G06T7/0012 , G06T2207/10116 , G06T2207/20208
摘要： A radiographic image processing device includes: an image acquisition section that acquires a subject image detected by a shielded detection portion and a non-shielded detection portion; an area information acquisition section that acquires area information which is information for specifying a non-shielded image area and a shielded image area; and a scattered ray suppression section that estimates spreading of scattered rays generated in a non-shielded subject portion, estimates that scattered rays that spread to the non-shielded image area from a shielded subject portion are not present, calculates a scattered ray component in each position in the non-shielded image area as the estimated scattered rays reach each position in the non-shielded image area, and suppresses the scattered ray component in each position in the non-shielded image area according to the calculated scattered ray component.

3. 发明授权

US10275647B2 Method, apparatus, and program for judging grid quality 有权
公开(公告)号：US10275647B2
公开(公告)日：2019-04-30
申请号：US15350097
申请日：2016-11-13
申请人： FUJIFILM Corporation
发明人： Satoshi Naito
IPC分类号： G06K9/00 , G21K1/00 , G06K9/03 , G06K9/46 , G06K9/52 , G06T7/00
摘要： An image obtaining section obtains a radiation image that includes a periodic pattern of a grid. A frequency analyzing section performs frequency analysis on the radiation image to obtain a frequency spectrum of the radiation image. A peak determining section determines a peak within the frequency spectrum to be a target of processing. A first judging section measures the width of the peak which is the target of processing, and judges the quality of the grid based on the measured width of the peak.

4. 发明授权

US10219770B2 Radiographic image processing device, method, and program 有权
公开(公告)号：US10219770B2
公开(公告)日：2019-03-05
申请号：US15141193
申请日：2016-04-28
申请人： FUJIFILM Corporation
发明人： Jun Enomoto , Takashi Tajima , Takeshi Koishi , Haruyasu Nakatsugawa , Hirofumi Sawada , Daiki Harada , Takahiro Kawamura , Satoshi Naito , Hideki Yamagishi , Noriaki Ida
IPC分类号： A61B6/00
摘要： A radiographic image captured by irradiating a subject with radiation is acquired. A scattered radiation removal unit removes a scattered component from the radiographic image using at least imaging conditions. A correction information acquisition unit acquires correction information for correcting the degree of removal of the scattered component and changes the imaging conditions on the basis of the correction information. The scattered radiation removal unit performs a process of removing the scattered component from the radiographic image on the basis of the changed imaging conditions.

5. 发明授权

US09886765B2 Radiographic image analysis device and method, and storage medium having stored therein program 有权
公开(公告)号：US09886765B2
公开(公告)日：2018-02-06
申请号：US15007724
申请日：2016-01-27
申请人： FUJIFILM Corporation
发明人： Satoshi Naito
IPC分类号： G06K9/00 , G06T7/00 , A61B6/00 , G06T7/62
CPC分类号： G06T7/60 , A61B6/4291 , A61B6/5211 , A61B6/5282 , A61B6/5294 , G06T7/0012 , G06T7/62 , G06T2207/10116
摘要： A subject image is acquired. A virtual model of the subject having a predetermined body thickness distribution is acquired. A composite image of an estimated primary X-ray image, which is obtained by estimating a primary X-ray image of the virtual model obtained by radiography from the virtual model, and an estimated scattered X-ray image, which is obtained by estimating a scattered X-ray image of the virtual model obtained by radiography from the virtual model, is generated as an estimated image which is obtained by estimating a radiographic image of the subject obtained by radiography. The body thickness distribution of the virtual model is corrected such that a difference between the estimated image and the subject image is reduced. The corrected body thickness distribution of the virtual model is determined as the body thickness distribution of the subject.

6. 发明授权

US10258305B2 Radiographic image processing device, method, and program 有权
公开(公告)号：US10258305B2
公开(公告)日：2019-04-16
申请号：US15141167
申请日：2016-04-28
申请人： FUJIFILM Corporation
发明人： Jun Enomoto , Takashi Tajima , Takeshi Koishi , Haruyasu Nakatsugawa , Hirofumi Sawada , Daiki Harada , Takahiro Kawamura , Satoshi Naito , Hideki Yamagishi , Noriaki Ida
IPC分类号： A61B6/00
摘要： It is detected whether a grid stripe is present in a radiographic image. In a case in which the grid stripe is detected, a process of removing the grid stripe from the radiographic image is performed and the radiographic image is displayed. In a case in which the grid stripe is not detected, a process of removing a scattered component from the radiographic image is performed and a radiographic image subjected to the scattered radiation removal process and a radiographic image before the process are displayed.

7. 发明授权

US09836830B2 Radiographic image processing device, method, and recording medium 有权
公开(公告)号：US09836830B2
公开(公告)日：2017-12-05
申请号：US15160053
申请日：2016-05-20
申请人： FUJIFILM Corporation
发明人： Satoshi Naito , Takahiro Kawamura
IPC分类号： G06K9/00 , G06T5/00 , A61B6/00 , G01N23/04 , G06T5/10
CPC分类号： G06T5/008 , A61B6/5211 , A61B6/5282 , G01N23/046 , G06T5/10 , G06T2207/10116 , G06T2207/20016 , G06T2207/30061
摘要： A frequency resolution unit performs frequency resolution of a radiographic image to generate band images representing frequency components in a plurality of frequency bands. A reference image generation unit generates a reference image representing information associated with scattered radiation included in the radiographic image, and generates a plurality of band reference images corresponding to a plurality of frequency bands from the reference image. A band image conversion unit performs conversion between the corresponding pixels of the band reference images and the band images in the corresponding frequency bands to generate converted band images. A synthesis unit synthesizes the converted band images to generate a processed radiographic image with converted contrast.

8. 发明授权

US09569826B2 Radiographic image processing device, radiographic image processing method, and recording medium 有权
标题翻译：射线照相图像处理装置，放射线图像处理方法和记录介质
公开(公告)号：US09569826B2
公开(公告)日：2017-02-14
申请号：US14863574
申请日：2015-09-24
申请人： FUJIFILM Corporation
发明人： Satoshi Naito , Takahiro Kawamura
IPC分类号： G06K9/00 , G06T5/00 , A61B6/00 , G06T7/00
CPC分类号： G06T5/009 , A61B6/5205 , A61B6/5282 , G01N23/04 , G06T7/0012 , G06T2207/10116 , G06T2207/20208
摘要： A radiographic image processing device includes: an image acquisition section that acquires a subject image detected by a shielded detection portion and a non-shielded detection portion; an area information acquisition section that acquires area information which is information for specifying a non-shielded image area and a shielded image area; and a scattered ray suppression section that estimates spreading of scattered rays generated in a non-shielded subject portion, estimates that scattered rays that spread to the non-shielded image area from a shielded subject portion are not present, calculates a scattered ray component in each position in the non-shielded image area as the estimated scattered rays reach each position in the non-shielded image area, and suppresses the scattered ray component in each position in the non-shielded image area according to the calculated scattered ray component.
摘要翻译：放射线照相图像处理装置包括：图像获取部，其获取由屏蔽检测部和非屏蔽检测部检测出的被检体图像; 区域信息获取部，其获取作为用于指定非屏蔽图像区域和屏蔽图像区域的信息的区域信息; 以及散射光线抑制部，其估计在非屏蔽对象部分中产生的散射光的扩散，估计不存在从屏蔽对象部分扩散到非屏蔽图像区域的散射光线，计算每个中的散射光线分量由于估计的散射光线到达非屏蔽图像区域中的每个位置，在非屏蔽图像区域中的位置，并且根据计算的散射光线分量抑制非屏蔽图像区域中的每个位置的散射光线分量。

9. 发明授权

US10235766B2 Radiographic image analysis device and method, and storage medium having stored therein program 有权
公开(公告)号：US10235766B2
公开(公告)日：2019-03-19
申请号：US15857171
申请日：2017-12-28
申请人： FUJIFILM Corporation
发明人： Satoshi Naito
IPC分类号： G06F9/00 , G06T7/60 , A61B6/00 , G06T7/62 , G06T7/00
摘要： A subject image is acquired. A virtual model of the subject having a predetermined body thickness distribution is acquired. A composite image of an estimated primary X-ray image, which is obtained by estimating a primary X-ray image of the virtual model obtained by radiography from the virtual model, and an estimated scattered X-ray image, which is obtained by estimating a scattered X-ray image of the virtual model obtained by radiography from the virtual model, is generated as an estimated image which is obtained by estimating a radiographic image of the subject obtained by radiography. The body thickness distribution of the virtual model is corrected such that a difference between the estimated image and the subject image is reduced. The corrected body thickness distribution of the virtual model is determined as the body thickness distribution of the subject.

10. 发明授权

US09996910B2 Radiographic image processing device, method, and recording medium 有权
公开(公告)号：US09996910B2
公开(公告)日：2018-06-12
申请号：US15795674
申请日：2017-10-27
申请人： FUJIFILM Corporation
发明人： Satoshi Naito , Takahiro Kawamura
IPC分类号： G06K9/00 , G06T5/00 , A61B6/00 , G06T5/10 , G01N23/04
CPC分类号： G06T5/008 , A61B6/5211 , A61B6/5282 , G01N23/046 , G06T5/10 , G06T2207/10116 , G06T2207/20016 , G06T2207/30061
摘要： A frequency resolution unit performs frequency resolution of a radiographic image to generate band images representing frequency components in a plurality of frequency bands. A reference image generation unit generates a reference image representing information associated with scattered radiation included in the radiographic image, and generates a plurality of band reference images corresponding to a plurality of frequency bands from the reference image. A band image conversion unit performs conversion between the corresponding pixels of the band reference images and the band images in the corresponding frequency bands to generate converted band images. A synthesis unit synthesizes the converted band images to generate a processed radiographic image with converted contrast.

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