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公开(公告)号：US20210407098A1
公开(公告)日：2021-12-30
申请号：US17354877
申请日：2021-06-22
Applicant: Canon U.S.A., Inc.
Inventor： Lampros Athanasiou
Abstract: One or more devices, systems, methods, and storage mediums for optical imaging medical devices, such as, but not limited to, Optical Coherence Tomography (OCT), single mode OCT, and/or multi-modal OCT apparatuses and systems, and methods and storage mediums for use with same, for calculating lumen distance(s), including based on real-time A-line signal(s), are provided herein. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Fast A-line lumen segmentation methods, which can be applied real-time to a whole arterial pullback, and devices, systems, and storage mediums for use with same, are provided herein. Techniques provided herein also improve processing efficiency and decrease calculations while achieving measurements that are more precise.
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公开(公告)号：US20230115191A1
公开(公告)日：2023-04-13
申请号：US17500583
申请日：2021-10-13
Applicant: CANON U.S.A., INC.
Inventor： Lampros Athanasiou
IPC: G06T7/00
Abstract: Embodiments disclosed herein provide systems, methods and/or computer-readable media for automatically detecting and removing fluorescence artifacts from catheter-based multimodality OCT-NIRAF images. In one embodiment, a process of determining an automatic threshold value (automatic thresholding) is implemented by sorting characteristic parameter values of the NIRAF signal and finding a maximum perpendicular distance between a curve of the sorted values and a straight line from the highest to the lowest sorted value, combined with the use of unsupervised machine learning classification techniques to detect the frame's NIRAF values that correspond to signal artifacts. Once the signal artifacts are detected, the system can filter out the signal artifacts, correct the frames that had artifacts, and produce a more accurate multimodality image.
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公开(公告)号：US12076118B2
公开(公告)日：2024-09-03
申请号：US17492376
申请日：2021-10-01
Applicant: Canon U.S.A., Inc.
Inventor： Mie Kunio , Lampros Athanasiou
CPC classification number: A61B5/02007 , A61B5/6852 , A61B5/742 , A61B2560/0223
Abstract: One or more devices, systems, methods and storage mediums for optical imaging medical devices, such as, but not limited to, Optical Coherence Tomography (OCT), single mode OCT, and/or multi-modal OCT apparatuses and systems, and methods and storage mediums for use with same, for detecting external elastic lamina (EEL) and/or lumen edge(s) are provided herein. One or more embodiments provide at least one method, device, apparatus, system, or storage medium to comprehend information, including, but not limited to, molecular structure of a vessel, and to provide an ability to manipulate the vessel information. In addition to controlling one or more imaging modalities, the EEL detection techniques may operate for one or more applications, including, but not limited to, manual or automatic EEL detection, stent positioning, stent selection, co-registration, and imaging.
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公开(公告)号：US11972561B2
公开(公告)日：2024-04-30
申请号：US17343502
申请日：2021-06-09
Applicant: Canon U.S.A., Inc.
Inventor： Lampros Athanasiou
CPC classification number: G06T7/0012 , G06T5/70 , G06T7/136 , G06T2207/10101 , G06T2207/20028 , G06T2207/30021 , G06T2207/30101
Abstract: One or more devices, systems, methods, and storage mediums for optical imaging medical devices, such as, but not limited to, Optical Coherence Tomography (OCT), single mode OCT, and/or multi-modal OCT apparatuses and systems, and methods and storage mediums for use with same, for triggering auto-pullback, including for devices or systems using blood clearing, are provided herein. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Techniques provided herein also improve processing and imaging efficiency while achieving images that are more precise.
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公开(公告)号：US11779277B2
公开(公告)日：2023-10-10
申请号：US17345797
申请日：2021-06-11
Applicant: Canon U.S.A., Inc.
Inventor： Lampros Athanasiou
CPC classification number: A61B5/6862 , A61B5/6876 , A61B5/7264 , A61B5/7425 , G06T7/136 , G06T2207/10028 , G06T2207/10101 , G06T2207/20081 , G06T2207/30021 , G06T2207/30101
Abstract: Devices, systems, and methods for stent detection and apposition are disclosed. Embodiments obtain a plurality of images of intravascular image data of a vessel wall and an endovascular device, generate a signal that represents the plurality of images, identify one or more images that correspond to the endovascular device based on the signal that represents the plurality of images, generate a representation of a three-dimensional (3D) shape of the endovascular device based on the one or more images, determine an apposition value of the endovascular device relative to the vessel wall using a representation of a 3D shape of a lumen segment that corresponds to the endovascular device, the apposition value based on a volume difference between the 3D shape of the lumen segment and the 3D shape of the endovascular device, and present information indicating the apposition value.
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Patent Agency Ranking
公开(公告)号：US20220395230A1
公开(公告)日：2022-12-15
申请号：US17345797
申请日：2021-06-11
Applicant: Canon U.S.A., Inc.
Inventor： Lampros Athanasiou
Abstract: Devices, systems, and methods for stent detection and apposition are disclosed. Embodiments obtain a plurality of images of intravascular image data of a vessel wall and an endovascular device, generate a signal that represents the plurality of images, identify one or more images that correspond to the endovascular device based on the signal that represents the plurality of images, generate a representation of a three-dimensional (3D) shape of the endovascular device based on the one or more images, determine an apposition value of the endovascular device relative to the vessel wall using a representation of a 3D shape of a lumen segment that corresponds to the endovascular device, the apposition value based on a volume difference between the 3D shape of the lumen segment and the 3D shape of the endovascular device, and present information indicating the apposition value.
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公开(公告)号：US20250134387A1
公开(公告)日：2025-05-01
申请号：US18928722
申请日：2024-10-28
Applicant: CANON U.S.A., INC.
Inventor： Lampros Athanasiou
Abstract: One or more devices, systems, methods and storage mediums for performing intravascular imaging and/or optical coherence tomography (OCT) while detecting and/or characterizing one or more tissues are provided. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Preferably, the intravascular imaging devices, systems methods and storage mediums include or involve a method, such as, but not limited to, using one image, such as a carpet view, to detect and/or characterize the one or more tissues and/or to perform coregistration. Examples of identified or detected tissues include calcium, lipids, and other types of tissue.
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公开(公告)号：US12112472B2
公开(公告)日：2024-10-08
申请号：US17500583
申请日：2021-10-13
Applicant: CANON U.S.A., INC.
Inventor： Lampros Athanasiou
CPC classification number: G06T7/0012 , G06T2207/10064 , G06T2207/10101 , G06T2207/20081 , G06T2207/20084 , G06T2207/20182 , G06T2207/30021
Abstract: Embodiments disclosed herein provide systems, methods and/or computer-readable media for automatically detecting and removing fluorescence artifacts from catheter-based multimodality OCT-NIRAF images. In one embodiment, a process of determining an automatic threshold value (automatic thresholding) is implemented by sorting characteristic parameter values of the NIRAF signal and finding a maximum perpendicular distance between a curve of the sorted values and a straight line from the highest to the lowest sorted value, combined with the use of unsupervised machine learning classification techniques to detect the frame's NIRAF values that correspond to signal artifacts. Once the signal artifacts are detected, the system can filter out the signal artifacts, correct the frames that had artifacts, and produce a more accurate multimodality image.
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公开(公告)号：US11922633B2
公开(公告)日：2024-03-05
申请号：US17354877
申请日：2021-06-22
Applicant: Canon U.S.A., Inc.
Inventor： Lampros Athanasiou
CPC classification number: G06T7/13 , G06T7/136 , G06T7/168 , G06T2207/10101 , G06T2207/20028 , G06T2207/20182 , G06T2207/30021 , G06T2207/30101
Abstract: One or more devices, systems, methods, and storage mediums for optical imaging medical devices, such as, but not limited to, Optical Coherence Tomography (OCT), single mode OCT, and/or multi-modal OCT apparatuses and systems, and methods and storage mediums for use with same, for calculating lumen distance(s), including based on real-time A-line signal(s), are provided herein. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Fast A-line lumen segmentation methods, which can be applied real-time to a whole arterial pullback, and devices, systems, and storage mediums for use with same, are provided herein. Techniques provided herein also improve processing efficiency and decrease calculations while achieving measurements that are more precise.
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公开(公告)号：US20230363652A1
公开(公告)日：2023-11-16
申请号：US17744121
申请日：2022-05-13
Applicant: CANON U.S.A., INC.
Inventor： Lampros Athanasiou , Mark Alan Hamm , Christopher Douglas Brushett
CPC classification number: A61B5/0215 , A61B1/00135 , A61B1/005 , A61B1/3137 , A61B1/0623 , A61B5/029 , A61B5/0066 , A61B1/00006 , A61B1/00045
Abstract: A catheter comprises an imaging core, an inner sheath enclosing the imaging core, an outer sheath surrounding the inner sheath, and a flexible membrane arranged on the outer sheath and configured to deflect in response to intravascular pressure. At least part of the inner sheath and part of the outer sheath are nested within each other. A chamber is defined by the membrane, and the parts of the inner and outer sheaths that are nested within each other. The chamber provides a space into which the membrane is deflected when surrounded by fluids. A processor controls the imaging core to acquire pressure data by scanning the membrane with light transmitted through the chamber, and to acquire image data by scanning a vessel wall with light transmitted through the inner sheath. If the membrane breaks, the chamber prevents fluids from entering the imaging core, and the catheter continues acquiring image data.
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