Method for magnetic resonance angiography using in-flow of trans

Details Method for magnetic resonance angiography using in-flow of trans Method for magnetic resonance angiography using in-flow of trans

1996-12-23

1997-09-30

Lateef, Marvin M.

Surgery

Truss

Pad

1286532, 324307, 324309, A61B 505

Patent

active

056717423

ABSTRACT:
Radiofrequency (RF) and magnetic field gradient pulse sequences employ Time-of-Flight (TOF) strategy to selectively create transverse spin magnetization which is then maintained for a selected period of time and then imaged in order to generate a vessel selective magnetic resonance angiogram. The pulse sequence employs a spatially selective excitation pulse which is used to create transverse spin magnetization in a selected region of a subject. This region typically is made to include the root of the vessel to be imaged. After excitation, transverse magnetization is maintained with a series of refocusing RF pulses while the blood moves along the vessel. The transverse magnetization is then sampled at one or more selected times after excitation with conventional imaging strategies.

REFERENCES:
patent: 5285158 (1994-02-01), Mistretta et al.
patent: 5375598 (1994-12-01), Dumoulin et al.
patent: 5446384 (1995-08-01), Dumoulin

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