Key result
Novel miniature intravascular probe obtains NMR signals without external magnets or RF coils.
Answers are grounded in this paper and cite their sources.
A miniature (1.73 mm in diameter) NMR probe, which contains a magnet and a radiofrequency (RF) coil, is presented. This probe is integrated at the tip of a standard catheter and can be inserted into the human coronary arteries, creating local magnetic fields needed to obtain the NMR signal from the blood vessel walls, without the need for external magnet or RF coils. The basic theory governing the probe performance in terms of signal-to-noise-ratio and contrast parameters is presented, along with measured results from test samples. The NMR signal can be analyzed to obtain tissue contrast parameters such as T1, T2 and the diffusion coefficient, which may be used to detect lipid-rich vulnerable plaques in the coronary arteries.
No takes yet. Share an insight, caveat, or question.
Blank et al. (2005) studied this question. Miniature self-contained intravascular magnetic resonance (IVMI) probe was evaluated on Signal-to-noise-ratio and contrast parameters from test samples. A miniature self-contained intravascular magnetic resonance probe (1.73 mm diameter) successfully obtained NMR signals from test samples without the need for external magnets or RF coils.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: