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1. WO2006050388 - RESPIRATORY VOLUME/FLOW GATING, MONITORING, AND SPIROMETRY SYSTEM FOR MRI

Publication Number WO/2006/050388
Publication Date 11.05.2006
International Application No. PCT/US2005/039539
International Filing Date 31.10.2005
IPC
A61B 5/05 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
CPC
A61B 5/055
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
055involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
A61B 5/0873
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
08Detecting, measuring or recording devices for evaluating the respiratory organs
087Measuring breath flow
0873using optical means
A61B 5/7285
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7271Specific aspects of physiological measurement analysis
7285for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal
A61B 6/541
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
54Control of apparatus or devices for radiation diagnosis
541involving acquisition triggered by a physiological signal
G01R 33/5673
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
44using nuclear magnetic resonance [NMR]
48NMR imaging systems
54Signal processing systems, e.g. using pulse sequences ; , Generation or control of pulse sequences
56Image enhancement or correction, e.g. subtraction or averaging techniques ; , e.g. improvement of signal-to-noise ratio and resolution
567gated by physiological signals ; , i.e. synchronization of acquired MR data with periodical motion of an object of interest, e.g. monitoring or triggering system for cardiac or respiratory gating
5673Gating or triggering based on a physiological signal other than an MR signal, e.g. ECG gating or motion monitoring using optical systems for monitoring the motion of a fiducial marker
Applicants
  • THE CHILDREN'S HOSPITAL OF PHILADELPHIA [US]/[US] (AllExceptUS)
  • MCDONOUGH, Joseph, M. [US]/[US] (UsOnly)
  • ARENS, Raanan [US]/[US] (UsOnly)
  • SIN, Sanghun [KR]/[US] (UsOnly)
Inventors
  • MCDONOUGH, Joseph, M.
  • ARENS, Raanan
  • SIN, Sanghun
Agents
  • SPADT, Jonathan, H.
Priority Data
60/624,29402.11.2004US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) RESPIRATORY VOLUME/FLOW GATING, MONITORING, AND SPIROMETRY SYSTEM FOR MRI
(FR) SYSTEME DE SPIROMETRIE, DE CONTROLE DU DEBIT/VOLUME RESPIRATOIRE POUR UN ENVIRONNEMENT IRM
Abstract
(EN)
A respiratory volume/flow monitoring system, including a pneumotach that measures micromovements of a membrane in a MRI environment, gates (triggers) a MRI machine to start image acquisition at specific lung volumes or airflow rates during the breathing cycle or other breathing maneuvers of a patient. The system provides breathing motion artifact suppression for any imaging test susceptible to breathing motion artifact, allows respiratory monitoring of the subject during an MRI procedure, and provides the capability to perform spirometric testing while the subject is in the MRI environment. The preferred embodiments of this invention are also applicable for patients undergoing CT imaging or any other imaging modality that allows external triggering.
(FR)
L'invention concerne un système de contrôle du débit/volume respiratoire qui comprend un pneumotachogramme mesurant les micromouvements d'une membrane dans un environnement IRM, et qui active (déclenche) une machine d'IRM pour que celle-ci commence à acquérir des images à des volumes pulmonaires ou à des débits d'air spécifiques pendant le cycle respiratoire ou d'autres manoeuvres respiratoires d'un patient. Le système de l'invention permet de supprimer les artéfacts de mouvements respiratoires pour tout test d'imagerie sensible aux artéfacts de mouvements respiratoires, assure le contrôle respiratoire du sujet pendant une IRM, et peut effectuer un test spirométrique pendant que le sujet se trouve dans l'environnement IRM. Les modes de réalisation préférés de l'invention peuvent également être mis en oeuvre pour des patients passant un examen de tomodensitométrie ou pendant tout autre examen d'imagerie autorisant un déclenchement extérieur.
Also published as
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