# US 2026/0083418 A1 · Method and electronic device for calculating ratio of blood flow by vessel using vascular image > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0083418 A1 - Document ID: US20260083418A1 - Status: Published application - Kind: A1 - Application number: 19/190,863 - Filed: 2025-04-28 - Published: 2026-03-26 - Earliest claimed: 2024-09-20 - Assignees: Medipixel, Inc. - Applicants: Medipixel, Inc. - Inventors: Young-Hee Lee; Min-Yeong Kang; Donghyun Won - Web page: https://patentgrep.com/patent/US20260083418A1 ## CPC - A61B 6/507: {for determination of haemodynamic parameters, e.g. perfusion CT} - A61B 6/504: {for diagnosis of blood vessels, e.g. by angiography} - A61B 6/5217: {extracting a diagnostic or physiological parameter from medical diagnostic data} - G06T 7/0012: {Biomedical image inspection} - G06T 7/62: of area, perimeter, diameter or volume - G06V 10/764: using classification, e.g. of video objects - G06T 2207/30104: Vascular flow; Blood flow; Perfusion - G06V 2201/03: Recognition of patterns in medical or anatomical images - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING ## Abstract A method, performed by at least one processor, for calculating a ratio of blood-flow volumes by vessel using a vascular image, includes acquiring at least one vascular image, classifying, in the at least one vascular image, a plurality of vessels, extracting geometric information of each of the plurality of vessels from the at least one vascular image, and calculating a ratio of blood-flow volumes by vessel based on a value extracted as the geometric information of each of the plurality of vessels and a reference value for the geometric information of each of the plurality of vessels, wherein the reference value are set based on values calculated from a plurality of subjects. ## Claims ### Claim 1 A method performed by an apparatus comprising at least one processor, the method comprising: acquiring at least one vascular image; classifying, in the at least one vascular image, a plurality of vessels; extracting geometric information of each of the plurality of vessels from the at least one vascular image; identifying a ratio of blood-flow volumes by vessel based on a value extracted as the geometric information of each of the plurality of vessels and a reference value for the geometric information of each of the plurality of vessels, wherein the reference value are set based on values calculated from a plurality of subjects; and outputting, in association with at least one of the acquired at least one vascular image, an indicator associated with the ratio of blood-flow volumes by vessel. ### Claim 2 (depends on 1) The method according to claim 1, wherein the geometric information comprises at least one of a diameter, a length, a volume, a placement position, or a placement direction. ### Claim 3 (depends on 1) The method according to claim 1, wherein the classifying of the plurality of vessels comprises: classifying, in the at least one vascular image, a right coronary artery, a left anterior descending coronary artery, and a left circumflex coronary artery; or classifying, in the at least one vascular image, the right coronary artery and a left main coronary artery. ### Claim 4 (depends on 1) The method according to claim 1, wherein the identifying of the ratio of blood-flow volumes by vessel comprises: calculating a difference between the reference value and the extracted value for the geometric information of each of the plurality of vessels; and calculating, based on the calculated difference and reference distribution information of blood-flow volumes by vessel, the ratio of blood-flow volumes by vessel for each of the plurality of vessels. ### Claim 5 (depends on 4) The method according to claim 4, wherein the difference comprises a ratio of the reference value to the extracted value or a ratio of a difference between the reference value and the extracted value to the extracted value. ### Claim 6 (depends on 1) The method according to claim 1, further comprising reconstructing, based on the at least one vascular image, a three-dimensional shape of the plurality of vessels. ### Claim 7 (depends on 6) The method according to claim 6, wherein the geometric information comprises at least one of a diameter, a length, a volume, an area, a placement position, or a placement direction. ### Claim 8 (depends on 1) The method according to claim 1, further comprising estimating, based on the ratio of blood-flow volumes by vessel, a blood-flow volume by vessel. ### Claim 9 (depends on 1) The method according to claim 1, further comprising providing a visual object corresponding to the identified ratio of blood-flow volumes by vessel. ### Claim 10 (depends on 1) The method according to claim 1, wherein the at least one vascular image comprises an image captured by coronary angiography. ### Claim 11 An electronic device comprising: a memory storing computer-readable instructions; and at least one processor connected to the memory and configured to execute the computer-readable instructions, wherein the computer-readable instructions, when executed by the at least one processor, are configured to cause the electronic device to: acquire at least one vascular image; classify, in the at least one vascular image, a plurality of vessels; extract geometric information of each of the plurality of vessels from the at least one vascular image; identify a ratio of blood-flow volumes by vessel based on a value extracted as the geometric information of each of the plurality of vessels and a reference value for the geometric information of each of the plurality of vessels, wherein the reference value are set based on values calculated from a plurality of subjects; and output, in association with at least one of the acquired at least one vascular image, an indicator associated with the ratio of blood-flow volumes by vessel. ### Claim 12 (depends on 11) The electronic device according to claim 11, wherein the computer-readable instructions, when executed by the at least one processor, are configured to cause the electronic device to: calculate a difference between the reference value and the extracted value for the geometric information of each of the plurality of vessels; and calculate, based on the calculated difference and reference distribution information of blood-flow volumes by vessel, the ratio of blood-flow volumes by vessel for each of the plurality of vessels. ### Claim 13 (depends on 12) The electronic device according to claim 12, wherein the difference comprises a ratio of the reference value to the extracted value or a ratio of a difference between the reference value and the extracted value to the extracted value. ### Claim 14 (depends on 11) The electronic device according to claim 11, wherein the computer-readable instructions, when executed by the at least one processor, are configured to cause the electronic device to reconstruct, based on the at least one vascular image, a three-dimensional shape of the plurality of vessels. ### Claim 15 (depends on 11) The electronic device according to claim 11, wherein the computer-readable instructions, when executed by the at least one processor, are configured to cause the electronic device to estimate, based on the ratio of blood-flow volumes by vessel, a blood-flow volume by vessel. ### Claim 16 A non-transitory computer-readable medium storing computer-readable instructions that, when executed by at least one processor, cause an electronic device to: acquire at least one vascular image; classify, in the at least one vascular image, a plurality of vessels; extract geometric information of each of the plurality of vessels from the at least one vascular image; identify a ratio of blood-flow volumes by vessel based on a value extracted as the geometric information of each of the plurality of vessels and a reference value for the geometric information of each of the plurality of vessels, wherein the reference value are set based on values calculated from a plurality of subjects; and output, in association with at least one of the acquired at least one vascular image, an indicator associated with the ratio of blood-flow volumes by vessel. ### Claim 17 (depends on 16) The non-transitory computer-readable medium according to claim 16, wherein the computer-readable instructions, when executed by the at least one processor, cause the electronic device to: calculate a difference between the reference value and the extracted value for the geometric information of each of the plurality of vessels; and calculate, based on the calculated difference and reference distribution information of blood-flow volumes by vessel, the ratio of blood-flow volumes by vessel for each of the plurality of vessels. ### Claim 18 (depends on 17) The non-transitory computer-readable medium according to claim 17, wherein the difference comprises a ratio of the reference value to the extracted value or a ratio of a difference between the reference value and the extracted value to the extracted value. ### Claim 19 (depends on 16) The non-transitory computer-readable medium according to claim 16, wherein the computer-readable instructions that, when executed by the at least one processor, cause the electronic device to reconstruct, based on the at least one vascular image, a three-dimensional shape of the plurality of vessels. ### Claim 20 (depends on 16) The non-transitory computer-readable medium according to claim 16, wherein the computer-readable instructions that, when executed by the at least one processor, cause the electronic device to estimate, based on the ratio of blood-flow volumes by vessel, a blood-flow volume by vessel.