Las ondas viajeras son los ojos nuevos de la resonancia en medicina

TL;DR

This paper discusses a novel traveling-wave MRI technique that uses wave propagation along the magnet bore, enabling high-quality imaging of larger samples and extending MRI capabilities beyond traditional near-field methods.

Contribution

It introduces a traveling-wave approach to MRI that departs from conventional near-field techniques, allowing for larger-scale imaging with uniform high-field results.

Findings

Successful high-field imaging of inorganic and organic samples

Extended imaging scale beyond traditional MRI methods

Demonstrated uniform signal reception across samples

Abstract

Magnetic Resonance Imaging is one of the most versatile experimental techniques in chemistry, physics and biology, providing insight into the structure and dynamics of matter at the molecular scale. A group led by Klaas Pruessmann at ETH Zurich (Brunner, D.O. et al. Travelling-wave nuclear magnetic resonance. Nature 457;994:2009) has now demonstrated an alternative approach that radically departs from the conventional view of MRI as a near-field, inductive technique. This approach also required that radiofre-quency wave is propagated from an antenna positioned at one end of the cylindrical magnet; this wave travels through the specimen within the bore of the magnet, producing signals that are received either by the same antenna or by another one positioned at the opposite end. The resulting instrument considerably extends the scale of imaging possible with Magnetic Resonance Imaging, and initial tests demonstrated uniform high-field imaging of a variety of samples, both inorganic and inorganic.