Single-coil surface imaging using a radiofrequency field gradient
A method for in-plane imaging of large objects as compared to the RF coil is proposed based on the use of a single specially designed surface coil, without using B(0) gradients. A constant B(1) gradient was generated along the main axis of a ladder-shaped coil, and RF-encoding along the direction of the gradient made it possible to obtain spin-density profiles. Successive acquisitions of profiles obtained by translation of the NMR coil resulted in distorted images-due to the presence of non-zero gradients perpendicular to the constant gradient-that were successfully processed using a mathematical treatment based on linear combinations of calculated altered images from single-pixel objects. Copyright 2000 Academic Press.
Baril
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Unite de Resonance Magnetique des Systemes Biologiques, UMR 5536 CNRS-Universite Victor Segalen Bordeaux 2, 146 rue Leo Saignat, Bordeaux Cedex, 33076, France.
Thiaudiere
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Quesson
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Delalande
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Canioni
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Franconi
JM