Method and apparatus for tracking of deformable regions by phase

Details Method and apparatus for tracking of deformable regions by phase Method and apparatus for tracking of deformable regions by phase

1993-08-11

1994-06-07

Smith, Ruth S.

Surgery

Truss

Pad

324309, A61B 5055

Patent

active

053180267

ABSTRACT:
Motion of a deformable region within an object is tracked using phase contrast magnetic resonance imaging measurements by defining the region with a plurality of vertices, obtaining magnetic resonance signals representative of at least one velocity component from each of the vertices at a plurality of time frames, and tracking motion of the region based on movement of the plurality of vertices. The region can be two-dimensional such as a polygon and ellipse or three-dimensional such as a polyhedron. The deformation can be homogeneous or non-homogeneous in which case the velocity component is defined as a polynomial of at least second order.

REFERENCES:
patent: 5195525 (1993-03-01), Pelc
patent: 5257625 (1993-11-01), Pelc
patent: 5257626 (1993-11-01), Pelc et al.

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