Transesophageal magnetic resonance imaging

Kendrick A. Shunk, Joao A.C. Lima, Alan W. Heldman, Ergin Atalar

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

The purpose of this study was to develop a non-invasive method of imaging the thoracic aorta that would provide both morphological detail within the aortic wall and information about regional aortic wall motion. An esophageal probe is described that allows transesophageal MR imaging (TEMRI) of the thoracic aorta and has several potential advantages over the competing non-vasculoinvasive techniques of transesophageal echocardiography (TEE) or standard MRI. The probe consists of a loop-less antenna housed inside a modified Levin gastric tube, with external matching and tuning circuitry. Using this probe, the thoracic aorta has been imaged in longitudinal and cross-sectional views. Details of the aortic wall were readily seen. Tissue tagging for measurement of focal stress/strain relationships was demonstrated to be feasible. TEMRI avoids the risks inherent in intravascular MRI yet provides comparable image quality. Potential applications of the device are discussed.

Original languageEnglish (US)
Pages (from-to)722-726
Number of pages5
JournalMagnetic Resonance in Medicine
Volume41
Issue number4
DOIs
StatePublished - May 11 1999

Keywords

  • Aorta
  • Atherosclerosis
  • Tagging
  • TEE

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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