Korean J Otolaryngol-Head Neck Surg.  2000 May;43(5):488-492.

MRI Technique for the Detection of Acoutic Neuroma

Affiliations
  • 1Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Korea University, Seoul, Korea.
  • 2Department of Diagnostic Radiology, College of Medicine, Inje university, Seoul, Korea.

Abstract

The mortality and morbidity associated with the surgery of acoustic neuroma (schwannoma) are intimately related to the tumor size. Therefore, early detection of acoustic neuroma greatly influences the postoperative result. The unsatisfactory resolution of the conventional 2-dimensional Fourier transformation spin-echo (2 DFT spin echo) technique hinders early detection and identification of the nerve tumors. However, the 3-dimensional Fourier transformation constructive interference in steady state (3 DFT CISS) and 3-dimensional magnetization-prepared rapid gradient echo (3D MP-RAGE) allows 3 dimensional re- construction and identification of small tumors below 1 mm in size. The authors attempted to determine whether CISS and MP-RAGE techniques are appropriate methods for detection of acoustic neuroma, by imaging the internal acoustic meatus and tumor in two acoustic neuroma patients. The authors believe that complementary utilization of the two techniques will enable early detection of acoustic neuroma and improve treatment outcome.

Keyword

Acoustic neuroma
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