High resolution intravascular MRI and MRS by using a catheter receiver coil

Ergin Atalar, Paul A. Bottomley, Ogan Ocali, Luis C.L. Correia, Mark D. Kelemen, Joao A.C. Lima, Elias A. Zerhouni

Research output: Contribution to journalArticle

Abstract

Potentially important diagnostic information about atherosclerosis can be obtained by using magnetic resonance imaging and spectroscopy techniques. Because critical vessels such as the aorta, coronary arteries, and renal arteries are not near the surface of the body, surface coils are not adequate to increase the data quality to desired levels. A few catheter MR receiver coil designs have been proposed for imaging the walls of large blood vessels such as the aorta. These coils have limited longitudinal coverage and they are too thick to he placed into small vessels. A flexible, long and narrow receiver coil that can be placed on the tip of a catheter and will enable multi-slice high resolution imaging of small vessels has been developed. The authors describe the theory of the coil design technique, derive formulae for the signal-to-noise ratio characteristics of the coil, and show examples of high resolution cross-sectional images from isolated human aortas acquired by using this catheter coil. In addition, high resolution in vivo rabbit aorta images were obtained as well as a set of spatially resolved chemical shift spectra from a dog circumflex coronary artery.

Original languageEnglish (US)
Pages (from-to)596-605
Number of pages10
JournalMagnetic resonance in medicine
Volume36
Issue number4
DOIs
StatePublished - Oct 1996

Keywords

  • MR catheter coil
  • MRI of arterial wall
  • atherosclerosis
  • intravascular MRI

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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