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1. WO2020193549 - SLICE ALIGNMENT FOR SHORT AXIS CARDIAC MR CINE SLICE STACKS

Publication Number WO/2020/193549
Publication Date 01.10.2020
International Application No. PCT/EP2020/058156
International Filing Date 24.03.2020
IPC
G01R 33/563 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
44using nuclear magnetic resonance
48NMR imaging systems
54Signal processing systems, e.g. using pulse sequences
56Image enhancement or correction, e.g. subtraction or averaging techniques
563of moving material, e.g. flow-contrast angiography
G01R 33/483 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
44using nuclear magnetic resonance
48NMR imaging systems
483with selection of signal or spectra from particular regions of the volume, e.g. in vivo spectroscopy
G01R 33/565 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
44using nuclear magnetic resonance
48NMR imaging systems
54Signal processing systems, e.g. using pulse sequences
56Image enhancement or correction, e.g. subtraction or averaging techniques
565Correction of image distortions, e.g. due to magnetic field inhomogeneities
A61B 5/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
CPC
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 5/055
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; ; Measuring using microwaves or radiowaves
055involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
G01R 33/4835
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
483with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy
4833using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices
4835of multiple slices
G01R 33/56325
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
563of moving material, e.g. flow contrast angiography
56308Characterization of motion or flow; Dynamic imaging
56325Cine imaging
G01R 33/56509
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
565Correction of image distortions, e.g. due to magnetic field inhomogeneities
56509due to motion, displacement or flow, e.g. gradient moment nulling
Applicants
  • KONINKLIJKE PHILIPS N.V. [NL]/[NL]
Inventors
  • PETERS, Jochen
  • WEESE, Rolf, Jürgen
  • WISSEL, Tobias
  • WEBER, Frank, Michael
Agents
  • PHILIPS INTELLECTUAL PROPERTY & STANDARDS
Priority Data
19165617.227.03.2019EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SLICE ALIGNMENT FOR SHORT AXIS CARDIAC MR CINE SLICE STACKS
(FR) ALIGNEMENT DE TRANCHES POUR EMPILEMENTS DE TRANCHES DE RÉSONANCE MAGNÉTIQUE CINÉ CARDIAQUE À AXE COURT
Abstract
(EN)
Slice alignment approaches are described for short axis cardiac magnetic resonance cine slice stacks, which do not require additional scans, such as long axis scans or full 3D scans, and which are able to deal with cardiac structures having complex shapes. Both approaches do not need contours to follow a quadratic curvature function, and are well suitable for the purpose of obtaining a segmentation of a cardiac structure using a deformable surface model. Namely, such a deformable surface model is unable, but also not desired, to fully adapt to the 'zig-zag'-shaped pattern in the boundary of the cardiac structure due to the slice misalignment. Having removed or reduced the misalignment between image slices, such a deformable surface model may better adapt to the cardiac structure in the image data and 10 thereby provide a better segmentation of the cardiac structure.
(FR)
L'invention concerne des approches d'alignement de tranches pour des empilements de tranches de résonance magnétique ciné cardiaque à axe court, qui ne nécessitent pas de balayages supplémentaires, tels que des balayages d'axe long ou des balayages 3D complets, et qui sont aptes à traiter des structures cardiaques ayant des formes complexes. Les deux approches n'ont pas besoin de contours pour suivre une fonction de courbure quadratique, et sont bien appropriées dans le but d'obtenir une segmentation d'une structure cardiaque à l'aide d'un modèle de surface déformable. En effet, il n'est ni possible ni souhaitable pour un tel modèle de surface de s'adapter complètement au motif en forme de « zigzag » dans la limite de la structure cardiaque en raison du désalignement de tranche. Après avoir supprimé ou réduit le désalignement entre des tranches d'image, un tel modèle de surface déformable peut mieux s'adapter à la structure cardiaque dans les données d'image et permet ainsi d'obtenir une meilleure segmentation de la structure cardiaque.
Also published as
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