Universal-multi-layered, multi-tuned RF probe for MRI and MRS

Details Universal-multi-layered, multi-tuned RF probe for MRI and MRS Universal-multi-layered, multi-tuned RF probe for MRI and MRS

1998-05-20

2000-06-27

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

600422, G01V 300

Patent

active

06081120&

ABSTRACT:
A universal-tuned RF probe (8) is disclosed which covers all current nuclear MRS and MRI applications and anticipates the utilization of multiple nuclides. This probe comprises a switchable thin multi-layer coil (29, 30, 31), electronically controlled switches (11, 12), an impedance matching circuit (13-20), and a resonant frequency tuning circuit (21-28). By quick switching, all different nuclei are detected independently, therefore their performances can be optimized individually. Fast switching (of less than 10.sup.-9 seconds) allows multiple frequencies to operate simultaneously. A switchable thin multi-layer coil (29, 30, 31) is used to cover a wide range of resonant frequencies and maintain identical RF B1 magnetic fields for all the different nuclei.

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