Magnetic resonance (MR) angiography using an integrated polarizi

Details Magnetic resonance (MR) angiography using an integrated polarizi Magnetic resonance (MR) angiography using an integrated polarizi

1995-10-02

1997-02-18

Lateef, Marvin M.

Surgery

Truss

Pad

1286533, 1286534, 324309, A61B 5055

Patent

active

056033206

ABSTRACT:
A magnetic resonance (MR) active invasive device system for imaging blood vessels employs an integrated polarizing and imaging magnet which is comprised of a small, high-field polarizing magnet whose flux return path is routed through pole structures to produce a large substantially uniform low-field magnetic region suitable for low-field magnetic resonance imaging. A subject is positioned in the uniform low-field region. A catheter is inserted into the patient at or near the root of a vessel tree to be imaged. A fluid, intended to be used as a contrast agent is first passed through the small high-field polarizing magnet, creating a large net longitudinal magnetization in the fluid. The fluid is then introduced into the subject is through the catheter. Radiofrequency (RF) pulses and magnetic field gradients are then applied to the patient as in conventional MR imaging. Since the fluid has a larger longitudinal magnetization before the MR imaging sequence, the fluid produces a much larger MR response signal than other tissue, resulting in the vessel tree being imaged with excellent contrast.

REFERENCES:
patent: 4985678 (1991-01-01), Gangarosa et al.
patent: 5144241 (1992-09-01), Oppelt et al.
patent: 5315276 (1994-05-01), Huson et al.
patent: 5479925 (1996-01-01), Dumoulin et al.

Affiliated with

Also associated with

Rating

Magnetic resonance (MR) angiography using an integrated polarizi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic resonance (MR) angiography using an integrated polarizi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic resonance (MR) angiography using an integrated polarizi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1596164