Image analysis – Applications – Biomedical applications
Reexamination Certificate
2004-02-04
2008-01-15
Ahmed, Samir (Department: 2624)
Image analysis
Applications
Biomedical applications
C324S307000, C324S309000, C345S620000
Reexamination Certificate
active
07319784
ABSTRACT:
The goal was to automate and optimize the shaping and positioning of a shape-specific/conformal voxel that conforms to any volume of interest, such as a cranial lesion, to allow conformal voxel magnetic resonance spectroscopy (CV-MRS). We achieved this by using a computer program that optimizes the shape, size, and location of a convex polyhedron within the volume of interest. The sides of the convex polyhedron are used to automatically prescribe the size and location of selective excitation voxels and/or spatial saturation slices. For a spherically-shaped, phantom-simulated lesion, CV-MRS increased the signal from the lesion by a factor of 2.5 compared to a voxel completely inside the lesion. CV-MRS reduces the voxel prescription time, operator subjectivity, and acquisition time.
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Davison Norman E.
Latta Peter
Ryner Lawrence N.
Westmacott Garrett
Ahmed Samir
Battison Adrian D.
Bitar Nancy
Dupuis Ryan W.
National Research Council of Canada
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