Patents by Inventor Michel Dargis
Michel Dargis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11653888Abstract: This radiographic imaging apparatus (100) is provided with a control unit (5) configured to associate a projection image (70) in which at least a part of a post-removal projection image (70a) in which a contrast agent image (Ba) has been removed and at least a part of a fluoroscopic image (20) are most similar.Type: GrantFiled: October 3, 2017Date of Patent: May 23, 2023Assignee: Shimadzu CorporationInventors: Wataru Takahashi, Hidetaka Takezawa, Michel Dargis
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Patent number: 11138697Abstract: An image processor (13) of an X-ray imaging apparatus (100) is configured to be switchable to a full period image composition mode in which a composite image (M) is generated by superimposing images in an entirety of an image generation period and a partial period image composition mode in which the composite image is generated by superimposing the images in a part of the image generation period.Type: GrantFiled: April 9, 2018Date of Patent: October 5, 2021Assignee: Shimadzu CorporationInventors: Michel Dargis, Takanori Yoshida, Keiichi Tanno
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Patent number: 10980498Abstract: A radiography apparatus sequentially determines, on the basis of the positions of markers as time-sequential feature points (of a plurality of frames), positions at which the markers in the frames are displayed. This makes it possible to display a moving object while the position, direction and size thereof are properly set. Another advantage is that when a plurality of markers are extracted, information relating to the direction and size of the object is retained and the proximal and distal directions of the object and the length of a device (e.g., stent) can be intuitively determined from an image. Since positioning is performed using the plurality of positions of markers and the plurality of display positions, the position and direction of a corrected image to be finally displayed can also be set properly.Type: GrantFiled: December 28, 2015Date of Patent: April 20, 2021Assignee: SHIMADZU CORPORATIONInventors: Shota Sato, Wataru Takahashi, Michel Dargis, Takihito Sakai, Keiichi Goto, Sebastien Matte
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Patent number: 10856825Abstract: [Purpose] To provide a radiographic imaging apparatus capable of quickly acquiring three-dimensional image data of a target-of-interest when performing an operative procedure such as interventional treatment [Solving Means] A region-of-interest extraction unit 39 extracts a predetermined region as a region-of-interest from each of a series of two-dimensional images. The reconstruction unit 41 reconstructs a three-dimensional image of a region including a stent based on each of the images of the portion corresponding to the region-of-interest. That is, since the reconstruction unit 41 reconstructs each of a series of two-dimensional images P using an image of the region-of-interest corresponding to a part of the whole, the time required to reconstruct the three-dimensional image of the region including the stent can be shortened.Type: GrantFiled: March 16, 2018Date of Patent: December 8, 2020Assignee: Shimadzu CorporationInventors: Michel Dargis, Wataru Takahashi, Keiichi Goto
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Patent number: 10765392Abstract: This X-ray imaging apparatus is equipped with an image processing unit. The image processing unit obtains a first image with a marker reference position set in a first X-ray image and generate a second image in which a virtual marker image is superimposed at a corresponding position in a second X-ray image reflecting the change of a relative position from the marker reference position with respect to the second X-ray image different from the first X-ray image.Type: GrantFiled: April 25, 2018Date of Patent: September 8, 2020Assignee: Shimadzu CorporationInventors: Koki Yoshida, Takanori Yoshida, Michel Dargis
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Publication number: 20200245964Abstract: This radiographic imaging apparatus (100) is provided with a control unit (5) configured to associate a projection image (70) in which at least a part of a post-removal projection image (70a) in which a contrast agent image (Ba) has been removed and at least a part of a fluoroscopic image (20) are most similar.Type: ApplicationFiled: October 3, 2017Publication date: August 6, 2020Inventors: Wataru TAKAHASHI, Hidetaka TAKEZAWA, Michel DARGIS
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Publication number: 20200151856Abstract: An image processor (13) of an X-ray imaging apparatus (100) is configured to be switchable to a full period image composition mode in which a composite image (M) is generated by superimposing images in an entirety of an image generation period and a partial period image composition mode in which the composite image is generated by superimposing the images in a part of the image generation period.Type: ApplicationFiled: April 9, 2018Publication date: May 14, 2020Inventors: Michel DARGIS, Takanori YOSHIDA, Keiichi TANNO
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Patent number: 10625099Abstract: A radiotherapy tracking apparatus for tracking a position of a specific region with markerless tracking even when visual recognition of the specific region of the subject is poor and for eliminating preliminary work such as preparation of a template. A control element comprises a DRR image generation element, a phase-based position calculation element, an X-ray fluoroscopic image obtaining element, a phase adjuster, a frame-based position calculation element, a gating element and a memory storage. The frame-based position calculation element calculates the position of the specific region of the subject in the X-ray fluoroscopic image having the plurality of frames frame-by-frame based on the DRR image adjusted with the X-ray fluoroscopic image in the phase adjustment element and the position of the specific region calculated by the phase-based position calculation element.Type: GrantFiled: August 21, 2018Date of Patent: April 21, 2020Assignee: SHIMADZU CORPORATIONInventors: Wataru Takahashi, Michel Dargis, Shinichiro Mori
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Patent number: 10512793Abstract: A radiation fluoroscopy apparatus detects a marker and includes a control element, an image generation element 61 that generates an image including an embedded marker inside the body of the subject based on a transmitted X-ray. A device candidate detection element 62 detects the candidate of the marker, the local structure detection element 63 detects the local structure in the target region in a proximity of the candidate point of the marker, the device determination element 64 determines whether the local structure is the device such as the marker or not, the device location acquisition element 66 acquires the gravity center coordinate of the local structure, and the device tracking element 67 tracks the marker based on the location of the marker in each frame.Type: GrantFiled: February 2, 2018Date of Patent: December 24, 2019Assignee: SHIMADZU CORPORATIONInventors: Michel Dargis, Frederic Hudon, Wataru Takahashi, Kodai Nagae
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Publication number: 20190282190Abstract: [Purpose] To provide a radiographic imaging apparatus capable of quickly acquiring three-dimensional image data of a target-of-interest when performing an operative procedure such as interventional treatment [Solving Means] A region-of-interest extraction unit 39 extracts a predetermined region as a region-of-interest from each of a series of two-dimensional images. The reconstruction unit 41 reconstructs a three-dimensional image of a region including a stent based on each of the images of the portion corresponding to the region-of-interest. That is, since the reconstruction unit 41 reconstructs each of a series of two-dimensional images P using an image of the region-of-interest corresponding to a part of the whole, the time required to reconstruct the three-dimensional image of the region including the stent can be shortened.Type: ApplicationFiled: March 16, 2018Publication date: September 19, 2019Inventors: Michel Dargis, Wataru TAKAHASHI, Keiichi GOTO
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Publication number: 20190240510Abstract: A radiation fluoroscopy apparatus detects a marker and includes a control element, an image generation element 61 that generates an image including an embedded marker inside the body of the subject based on a transmitted X-ray. A device candidate detection element 62 detects the candidate of the marker, the local structure detection element 63 detects the local structure in the target region in a proximity of the candidate point of the marker, the device determination element 64 determines whether the local structure is the device such as, the marker or not, the device location acquisition element 66 acquires the gravity center coordinate of the local structure, and the device tracking element 67 tracks the marker based on the location of the marker in each frame.Type: ApplicationFiled: February 2, 2018Publication date: August 8, 2019Applicant: SHIMADZU CORPORATIONInventors: Michel DARGIS, Frederic HUDON, Wataru TAKAHASHI, Kodai NAGAE
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Publication number: 20190060672Abstract: A radiotherapy tracking apparatus for tracking a position of a specific region with markerless tracking even when visual recognition of the specific region of the subject is poor and for eliminating preliminary work such as preparation of a template. A control element comprises a DRR image generation element, a phase-based position calculation element, an X-ray fluoroscopic image obtaining element, a phase adjuster, a frame-based position calculation element, a gating element and a memory storage. The frame-based position calculation element calculates the position of the specific region of the subject in the X-ray fluoroscopic image having the plurality of frames frame-by-frame based on the DRR image adjusted with the X-ray fluoroscopic image in the phase adjustment element and the position of the specific region calculated by the phase-based position calculation element.Type: ApplicationFiled: August 21, 2018Publication date: February 28, 2019Applicant: SHIMADZU CORPORATIONInventors: Wataru TAKAHASHI, Michel DARGIS, Shinichiro MORI
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Publication number: 20190015056Abstract: A radiography apparatus sequentially determines, on the basis of the positions of markers as time-sequential feature points (of a plurality of frames), positions at which the markers in the frames are displayed. This makes it possible to display a moving object while the position, direction and size thereof are properly set. Another advantage is that when a plurality of markers are extracted, information relating to the direction and size of the object is retained and the proximal and distal directions of the object and the length of a device (e.g., stent) can be intuitively determined from an image. Since positioning is performed using the plurality of positions of markers and the plurality of display positions, the position and direction of a corrected image to be finally displayed can also be set properly.Type: ApplicationFiled: December 28, 2015Publication date: January 17, 2019Applicant: SHIMADZU CORPORATIONInventors: Shota SATO, Wataru TAKAHASHI, Michel DARGIS, Takihito SAKAI, Keiichi GOTO, Sebastien MATTE
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Publication number: 20180310905Abstract: This X-ray imaging apparatus is equipped with an image processing unit. The image processing unit obtains a first image with a marker reference position set in a first X-ray image and generate a second image in which a virtual marker image is superimposed at a corresponding position in a second X-ray image reflecting the change of a relative position from the marker reference position with respect to the second X-ray image different from the first X-ray image.Type: ApplicationFiled: April 25, 2018Publication date: November 1, 2018Inventors: Koki YOSHIDA, Takanori YOSHIDA, Michel DARGIS
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Patent number: 10052075Abstract: An image processing apparatus includes a current image acquisition device which acquires a current image of a subject having a structure having a periodic movement, a past image acquisition device which acquires multiple past images of the subject such that the past images captured for over one or more periods of the periodic movement are acquired, and circuitry which searches multiple feature points on each past image and the current image, associates the feature points on the current image and the feature points on each of the past images, calculates, for each of the past images, a degree of similarity between the feature points on each of the past images and the feature points on the current image based on association, and identifies to which one of the past images the current image corresponds such that at which phase of the periodic movement the current image is positioned is estimated.Type: GrantFiled: November 25, 2016Date of Patent: August 21, 2018Assignee: SHIMADZU CORPORATIONInventors: Michel Dargis, Wataru Takahashi, Takanori Yoshida
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Publication number: 20170154416Abstract: An image processing apparatus includes a current image acquisition device which acquires a current image of a subject having a structure having a periodic movement, a past image acquisition device which acquires multiple past images of the subject such that the past images captured for over one or more periods of the periodic movement are acquired, and circuitry which searches multiple feature points on each past image and the current image, associates the feature points on the current image and the feature points on each of the past images, calculates, for each of the past images, a degree of similarity between the feature points on each of the past images and the feature points on the current image based on association, and identifies to which one of the past images the current image corresponds such that at which phase of the periodic movement the current image is positioned is estimated.Type: ApplicationFiled: November 25, 2016Publication date: June 1, 2017Applicant: SHIMADZU CORPORATIONInventors: Michel DARGIS, Wataru Takahashi, Takanori Yoshida
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Publication number: 20130094744Abstract: The provision of a feature extracting portion for obtaining sequentially images captured by an x-ray imaging device and for extracting features relating to the densities of the images; an image classifying portion for dividing the images into groups based on the features extracted by the feature extracting portion; a memory portion for storing the images, which have been divided into groups by the image classifying portion, together with imaging time stamps for each group; an image data processing portion for processing, for each group, images stored in the memory portion; and a monitor for outputting images processed by the image data processing portion.Type: ApplicationFiled: October 13, 2011Publication date: April 18, 2013Applicant: Shimadzu CorporationInventors: Hiroshi Sawada, Michel Dargis