Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1990-10-22
1992-11-24
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
324322, G01R 3320
Patent
active
051666189
ABSTRACT:
A whole volume neck coil for MRI includes an anterior and posterior saddle coil, the latter attached to a base. The anterior coil is held in an open framework, hinged against an extension tower attached to the base. The hinge axis is angled to the medial axis to provide greater entry area for the patient's head and shoulders. The extension tower also provides adjustment of the anterior coil toward and away from the base by means of a sliding carriage attached to the extension tower. The coils are passively decoupled from the RF excitation field by means of back-to-back diodes which insert a "pole" forming network into the coils. A method of calculating the values of the network components is taught that accounts for significant diode junction capacitance.
REFERENCES:
patent: 4075552 (1978-02-01), Traficante et al.
patent: 4129822 (1978-12-01), Traficante
patent: 4628264 (1986-12-01), Rzedzian
patent: 4691164 (1987-09-01), Haragashira
patent: 4725779 (1988-02-01), Hyde et al.
patent: 4731585 (1988-03-01), Fox
patent: 4784146 (1988-11-01), Mancuso et al.
patent: 4825164 (1989-04-01), Requardt
patent: 4906933 (1990-03-01), Kern
"Computer Modeling of Passive Decoupling Circuits", Heteren, et al. Aug., 1989.
"Optimal Decoupling of Multiple-Tuned Receiver Coils", Prammer, et al, Aug., 1989.
Jones Randall W.
Schubert Thomas E.
Medical Advances, Inc.
Tokar Michael J.
LandOfFree
NMR neck coil with passive decoupling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with NMR neck coil with passive decoupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NMR neck coil with passive decoupling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-924554