Iterative method of determining trajectory of a moving region in

Details Iterative method of determining trajectory of a moving region in Iterative method of determining trajectory of a moving region in

1995-02-01

1997-10-28

Lateef, Marvin M.

Surgery

Truss

Pad

324307, A61B 5055

Patent

active

056808623

ABSTRACT:
Several algorithms are presented for determining the trajectory of a particle in motion given cine phase contrast (PC) velocity field data. The PC velocity field is usually measured in a fixed frame of reference (spatial coordinates) and must be transformed to the velocity in material coordinates, i.e., the velocity experienced by individual points in the medium. The material velocity field can then be integrated to yield the trajectory of a particular point. Therefore, to determine the trajectory of a particular point, the given spatial velocity field must be transformed to the material velocity field. While there exists a mathematical relationship that maps velocity fields in spatial coordinates to material coordinates, this mapping can be applied only if particle trajectories are known. Although there appears to be a dilemma here, through an optimization technique, we have devised an iterative procedure to determine the optimal trajectory in the sense to be defined.

REFERENCES:
patent: 5042485 (1991-08-01), Sano et al.
patent: 5195525 (1993-03-01), Pelc
patent: 5257625 (1993-11-01), Pelc
patent: 5257626 (1993-11-01), Pelc et al.
patent: 5318026 (1994-06-01), Pelc
patent: 5363844 (1994-11-01), Riederer et al.
patent: 5445151 (1995-08-01), Darrow et al.
patent: 5545993 (1996-08-01), Taguchi et al.
patent: 5577502 (1996-11-01), Darrow et al.
patent: 5581184 (1996-12-01), Heid
Pelc, et al., Phase Contrast Cine Magnetic Resonance Imaging, Magnetic Resonance Quarterly, vol. 7, pp. 229-254 (1991).
Pelc et al., 3-D Analysis of Myocardial Motion and Deformation with Phase Contrast Cine MRI, Book of Abstracts, Society of Magnetic Resonance in Medicine, vol. 1, p. 18 (Berlin, Germany), 1992.

Affiliated with

Also associated with

Rating

Iterative method of determining trajectory of a moving region in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Iterative method of determining trajectory of a moving region in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Iterative method of determining trajectory of a moving region in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1019520