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1. EP3715895 - SLICE ALIGNMENT FOR SHORT AXIS CARDIAC MR CINE SLICE STACKS

Office European Patent Office
Application Number 19165617
Application Date 27.03.2019
Publication Number 3715895
Publication Date 30.09.2020
Publication Kind A1
IPC
G01R 33/563
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
A61B 5/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
G01R 33/483
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
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
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
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 NV
Inventors PETERS JOCHEN
WEESE ROLF JÜRGEN
WISSEL TOBIAS
WEBER FRANK MICHAEL
Designated States
Priority Data 19165617 27.03.2019 EP
Title
(DE) SLICE-AUSRICHTUNG FÜR KARDIALE KURZACHSIGE MR-CINE-SLICE-STAPEL
(EN) SLICE ALIGNMENT FOR SHORT AXIS CARDIAC MR CINE SLICE STACKS
(FR) ALIGNEMENT DE TRANCHES POUR EMPILEMENTS DE TRANCHE CINÉ IRM CARDIAQUES 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 thereby provide a better segmentation of the cardiac structure.

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