Magnetic resonance (MR) perfusion imaging in a low-field imaging

Details Magnetic resonance (MR) perfusion imaging in a low-field imaging Magnetic resonance (MR) perfusion imaging in a low-field imaging

1995-10-02

1998-02-03

Lateef, Marvin M.

Surgery

Truss

Pad

1286533, 1286534, 324306, A61B 5055

Patent

active

057133590

ABSTRACT:
A magnetic resonance (MR) active invasive device system employs a small, high-field polarizing magnet, and a large low-field magnetic resonance (MR) imaging magnet for the purpose of generating MR images of blood perfusion in tissue. A subject is positioned in a large low-field MR imaging magnet. A catheter is inserted into the patient at or near the root of a vessel supplying blood to a portion of tissue to be imaged. A fluid, intended to be used as a contrast agent is first passed through the small high-field polarizing magnet, causing a high degree of net longitudinal magnetization to be produced in the fluid. The fluid is then introduced into the subject through the catheter. Radiofrequency (RF) pulses and magnetic field is 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. Images acquired during periods of time in which the fluid is flowing and not flowing are mathematically combined to give an MR image whose pixel intensity is related to the degree of tissue perfusion.

REFERENCES:
patent: 5447156 (1995-09-01), Dumoulin et al.
patent: 5479925 (1996-01-01), Dumoulin et al.

Affiliated with

Also associated with

Rating

Magnetic resonance (MR) perfusion imaging in a low-field imaging 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) perfusion imaging in a low-field imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic resonance (MR) perfusion imaging in a low-field imaging will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-654899