Three-dimensional fast spin-echo MR of the inner ear: ultra-long echo train length and half-Fourier technique

AJNR Am J Neuroradiol. 1998 Apr;19(4):739-41.

Abstract

We compared the image quality of the newly developed ultra-long echo train length (ETL) 3-D fast spin-echo (FSE) and half-Fourier technique, which is performed in less than 3 minutes, with the conventional 3D-FSE imaging technique, which takes 15 minutes, in assessing MR examinations of the inner ear. The new method's images were almost comparable to the conventional 3D-FSE images in depicting anatomic details and pathologic findings. Implementation of the ultra-long ETL and half-Fourier 3D-FSE imaging technique enables acquisition of inner ear MR studies in a vastly reduced time and with high spatial resolution without significant penalty, opening the possibility for low-cost screening of acoustic tumors without contrast enhancement in less than 3 minutes.

MeSH terms

  • Ear Neoplasms / diagnosis
  • Ear, Inner / pathology*
  • Fourier Analysis
  • Humans
  • Image Processing, Computer-Assisted
  • Magnetic Resonance Imaging / methods*
  • Neurilemmoma / diagnosis
  • Vestibular Diseases / diagnosis