Method to automatically tune MRI RF coils

Details Method to automatically tune MRI RF coils Method to automatically tune MRI RF coils

1997-01-27

2000-04-25

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324314, G01V 300

Patent

active

060548584

ABSTRACT:
A sweep generator 230 applies a range of frequencies to an rf coil 140 to detect the resonant frequency of a field generated by a magnet 125a,b. A frequency to current converter 220 applies an auxiliary magnetic field to tune an MRI apparatus to the resonant frequency of the rf coil. A flexible coil of one turn (300) or two or more turns (500) has a plurality of segments (301-307; 501-513). One of the belt has a contact k0, (k0'), which is electrically connectable to one or more contacts k1, (k1'), k2, (k2'), etc. located between the ends of the segments. For each connection to successive contacts, the length of the coil and its inductance increases by the added impedance .DELTA.L.sub.ij between contacts k.sub.i and k.sub.j. That increase of inductance is nullified by capacitors .DELTA.C.sub.sij located between segments.

REFERENCES:
patent: 4728894 (1988-03-01), Yoda et al.
patent: 4791372 (1988-12-01), Kirk et al.
patent: 4890061 (1989-12-01), Den Boef
patent: 4897604 (1990-01-01), Carlson et al.
patent: 5143068 (1992-09-01), Muennemann et al.
patent: 5166620 (1992-11-01), Panosh
patent: 5278503 (1994-01-01), Keller et al.
patent: 5357958 (1994-10-01), Kaufman
patent: 5432451 (1995-07-01), McGill et al.
patent: 5530351 (1996-06-01), Moritz et al.

Affiliated with

Also associated with

Rating

Method to automatically tune MRI RF coils does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method to automatically tune MRI RF coils, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to automatically tune MRI RF coils will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-996240