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公开(公告)号：US10231688B2
公开(公告)日：2019-03-19
申请号：US14868725
申请日：2015-09-29
Applicant: FUJIFILM Corporation
Inventor： Satoshi Naito , Takahiro Kawamura
Abstract: 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.
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2.发明授权公开(公告)号：US09679368B2
公开(公告)日：2017-06-13
申请号：US15398262
申请日：2017-01-04
Applicant: FUJIFILM Corporation
Inventor： Satoshi Naito , Takahiro Kawamura
CPC classification number: G06T5/009 , A61B6/5205 , A61B6/5282 , G01N23/04 , G06T7/0012 , G06T2207/10116 , G06T2207/20208
Abstract: 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.
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公开(公告)号：US10275647B2
公开(公告)日：2019-04-30
申请号：US15350097
申请日：2016-11-13
Applicant: FUJIFILM Corporation
Inventor： Satoshi Naito
Abstract: 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.
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公开(公告)号：US10219770B2
公开(公告)日：2019-03-05
申请号：US15141193
申请日：2016-04-28
Applicant: FUJIFILM Corporation
Inventor： Jun Enomoto , Takashi Tajima , Takeshi Koishi , Haruyasu Nakatsugawa , Hirofumi Sawada , Daiki Harada , Takahiro Kawamura , Satoshi Naito , Hideki Yamagishi , Noriaki Ida
IPC: A61B6/00
Abstract: 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.
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5.发明授权公开(公告)号：US09886765B2
公开(公告)日：2018-02-06
申请号：US15007724
申请日：2016-01-27
Applicant: FUJIFILM Corporation
Inventor： Satoshi Naito
CPC classification number: G06T7/60 , A61B6/4291 , A61B6/5211 , A61B6/5282 , A61B6/5294 , G06T7/0012 , G06T7/62 , G06T2207/10116
Abstract: 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.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10235766B2
公开(公告)日：2019-03-19
申请号：US15857171
申请日：2017-12-28
Applicant: FUJIFILM Corporation
Inventor： Satoshi Naito
Abstract: 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.
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公开(公告)号：US09996910B2
公开(公告)日：2018-06-12
申请号：US15795674
申请日：2017-10-27
Applicant: FUJIFILM Corporation
Inventor： Satoshi Naito , Takahiro Kawamura
CPC classification number: G06T5/008 , A61B6/5211 , A61B6/5282 , G01N23/046 , G06T5/10 , G06T2207/10116 , G06T2207/20016 , G06T2207/30061
Abstract: 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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公开(公告)号：US12009104B2
公开(公告)日：2024-06-11
申请号：US17117408
申请日：2020-12-10
Applicant: FUJIFILM Corporation
Inventor： Misaki Kawahara , Goro Miura , Satoshi Naito , Shumpei Kamon , Masaaki Oosake
IPC: G16H50/70 , A61B1/00 , G06F18/21 , G06F18/214 , G06N20/00 , G06V10/774 , G06V10/776 , G16H30/40 , G16H50/20
CPC classification number: G16H50/70 , A61B1/000096 , G06F18/214 , G06F18/217 , G06N20/00 , G06V10/774 , G06V10/776 , G16H30/40 , G16H50/20
Abstract: There are provided a medical image processing apparatus, a medical image processing method, a machine learning system, and a program that can reduce the volume of communication and can reduce the processing load of retraining or additional training that is performed by a machine learning apparatus. A medical image processing apparatus (13) includes: a trainer (26) that performs additional training for a first computer-aided diagnosis device on the basis of an input medical image; an evaluation unit that compares a second computer-aided diagnosis device obtained by the additional training with the first computer-aided diagnosis device and evaluates whether learning difference information about the additional training contributes to improvement of performance of the first computer-aided diagnosis device; a communication determination unit that determines, on the basis of a result of evaluation, whether the learning difference information is to be communicated; and a communication unit (34) that outputs the learning difference information in accordance with a result of determination by the communication determination unit.
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公开(公告)号：US10258305B2
公开(公告)日：2019-04-16
申请号：US15141167
申请日：2016-04-28
Applicant: FUJIFILM Corporation
Inventor： Jun Enomoto , Takashi Tajima , Takeshi Koishi , Haruyasu Nakatsugawa , Hirofumi Sawada , Daiki Harada , Takahiro Kawamura , Satoshi Naito , Hideki Yamagishi , Noriaki Ida
IPC: A61B6/00
Abstract: 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.
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公开(公告)号：US09836830B2
公开(公告)日：2017-12-05
申请号：US15160053
申请日：2016-05-20
Applicant: FUJIFILM Corporation
Inventor： Satoshi Naito , Takahiro Kawamura
CPC classification number: G06T5/008 , A61B6/5211 , A61B6/5282 , G01N23/046 , G06T5/10 , G06T2207/10116 , G06T2207/20016 , G06T2207/30061
Abstract: 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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