MULTIPLE CHANNEL NUCLEAR MAGNETIC RESONANCE COIL

摘要

A multi-channel nuclear magnetic resonance (NMR) coil operating at a resonance frequency includes a plurality of unit loops disposed upon a cylindrical surface of a coil body and surrounding the coil body as a closed NMR coil; and a plurality of inter-loop capacitors configured to connect adjacent unit loops respectively, wherein each unit loop comprises a signal channel and further comprises a pair of vertical conducting parts parallel to a cylindrical axis of the coil body, each vertical conducting part comprising an inductor and a first capacitor connected in serial; and a pair of horizontal conducting parts perpendicular to the cylindrical axis of the coil body, at least one horizontal conducting part comprising a second capacitor; and the inter-loop capacitor connects two respective horizontal conducting parts of adjacent unit loops disposed on a same side to eliminate coupling between signal channels of adjacent unit loops.

主权项

1. A multiple channel nuclear magnetic resonance (NMR) coil, operating at a resonance frequency f0, comprising:
five or more closed signal channels, each comprising a unit loop, the unit loops being arranged on and surrounding a cylindrical surface of a periphery of an imaged region, and each unit loop comprises: two vertical conducting parts parallel to a cylinder axis; and two arc-shaped conducting parts perpendicular to the cylinder axis; wherein the vertical conducting part of the unit loop comprise an inductor and a capacitor connected in serial, forming a resonant circuit with another inductor and capacitor in an adjacent unit loop or a nonadjacent unit loop separated by one unit loop to decrease coupling between signal channels of adjacent unit loops or nonadjacent unit loops separated by one unit loop; and a plurality of inter-loop capacitors configured to respectively connect the two arc-shaped conducting parts disposed on one same side of adjacent unit loops to decrease coupling between multiple signal channels.