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1. WO2020117588 - PHOTOACOUSTIC ELECTROCARDIOGRAM-GATED KILOHERTZ VISUALIZATION

Publication Number WO/2020/117588
Publication Date 11.06.2020
International Application No. PCT/US2019/063565
International Filing Date 27.11.2019
IPC
A61B 5/113 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
103Measuring devices for testing the shape, pattern, size or movement of the body or parts thereof, for diagnostic purposes
11Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
113occurring during breathing
A61B 5/0402 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
04Measuring bioelectric signals of the body or parts thereof
0402Electrocardiography, i.e. ECG
A61B 5/053 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
05Measuring for diagnosis by means of electric currents or magnetic fields
053Measuring electrical impedance or conductance of a portion of the body
A61B 8/08 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
08Detecting organic movements or changes, e.g. tumours, cysts, swellings
A61B 5/145 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
145Measuring characteristics of blood in vivo, e.g. gas concentration, pH-value
A61B 5/0205 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
02Measuring pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography; Heart catheters for measuring blood pressure
0205Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
CPC
A61B 2503/40
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2503Evaluating a particular growth phase or type of persons or animals
40Animals
A61B 2503/42
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2503Evaluating a particular growth phase or type of persons or animals
42for laboratory research
A61B 5/0035
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
0033Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
0035adapted for acquisition of images from more than one imaging mode, e.g. combining MRI and optical tomography
A61B 5/0044
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
0033Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
004adapted for image acquisition of a particular organ or body part
0044for the heart
A61B 5/0095
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
0093Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy
0095by applying light and detecting acoustic waves, i.e. photoacoustic measurements
A61B 5/0205
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
0205Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
Applicants
  • FUJIFILM SONOSITE, INC. [US]/[US]
Inventors
  • FORBRICH, Alexander, Erich
Agents
  • RITTER, Michael
  • MAIER, Robert, L.
  • TEMPESTA, Jennifer
Priority Data
62/775,11304.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PHOTOACOUSTIC ELECTROCARDIOGRAM-GATED KILOHERTZ VISUALIZATION
(FR) VISUALISATION KILOHERTZ DÉCLENCHÉE PAR ÉLECTROCARDIOGRAMME PHOTOACOUSTIQUE
Abstract
(EN)
In one embodiment, a photoacoustic imaging system receives user input to specify one or more imaging wavelengths, and a target number of image frames to be taken of a target tissue region. The specified imaging wavelengths are set to capture at least two different photoabsorbing molecules in the target tissue. The photoacoustic imaging system takes image frames at the specified wavelengths, while the system also receives ECG and respiration data of the subject. Image frames are discarded based on the respiration data, and the other image frames are sorted into a plurality of slots corresponding to different points of the cardiac cycle from the ECG data. The system creates a composite image from the one or more wavelengths to show the target tissue of interest through the different points of the cardiac cycle.
(FR)
Dans un mode de réalisation, un système d’imagerie photoacoustique reçoit une entrée d’utilisateur pour spécifier une ou plusieurs longueurs d’onde d’imagerie, et un nombre cible de trames d’image devant être acquises à partir d’une région de tissu cible. Les longueurs d’onde d’imagerie spécifiées sont définies pour capturer au moins deux molécules photoabsorbantes différentes dans le tissu cible. Le système d’imagerie photoacoustique acquiert des trames d’image aux longueurs d’onde spécifiées, tandis que le système reçoit également des données d’ECG et de respiration du sujet. Des trames d’image sont rejetées sur la base des données de respiration, et les autres trames d’image sont triées en une pluralité d’intervalles correspondant à différents points du cycle cardiaque à partir des données d’ECG. Le système crée une image composite à partir de la ou des longueurs d’onde pour présenter le tissu cible d’intérêt à travers les différents points du cycle cardiaque.
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