Developer site: The content shown here is test data.

MyEClinic
MyEClinic
Health Dictionary AI Health Chat Find an Online Doctor
A serene Zen garden with raked sand and smooth stones, symbolising clarity and calm

Health Dictionary

Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

Back to skin conditions

Acoustic neuroma MRI

Introduction

Overview

Overview

Gadolinium-enhanced MRI scan is the definitive diagnostic test for acoustic neuroma and can identify tumors as small as 1-2 millimeter in diameter. On brain MRI, acoustic neuroma characterized by hypointense mass on T1-weighted MRI, and hyperintense mass on T2-weighted MRI.

MRI

MRI
MRI component Features
T1
  • Slightly hypointense to the adjacent brain (63%)
  • Isointense to the adjacent brain (37%)
  • May contain hypointense cystic areas
T2
T1 C+ (Gd)

Post-op MRI: Linear enhancement may not indicate tumor. But if there is nodular enhancement, suspect tumor recurrence which will necessitate follow-up MRI).[3]

MRI showing Intracanalicular acoustic neuroma[4]
MRI showing Intrameatal vestibular schwannoma[5]
References

References

  1. ↑ E. P. Lin & B. T. Crane (2017). “The Management and Imaging of Vestibular Schwannomas”. AJNR. American journal of neuroradiology. 38 (11): 2034–2043. doi:10.3174/ajnr.A5213. PMID 28546250. Unknown parameter |month= ignored (help)
  2. ↑ D. F. Wilson, R. S. Hodgson, M. F. Gustafson, S. Hogue & L. Mills (1992). “The sensitivity of auditory brainstem response testing in small acoustic neuromas”. The Laryngoscope. 102 (9): 961–964. doi:10.1288/00005537-199209000-00001. PMID 1518359. Unknown parameter |month= ignored (help)
  3. ↑ Acoustic Schwannoma. Radiopedia(2015) http://radiopaedia.org/articles/acoustic-schwannoma Accessed on October 2 2015
  4. ↑ Image courtesy of Dr Frank Gaillard. Radiopaedia (original file here).[http://radiopaedia.org/licence Creative Commons BY-SA-NC
  5. ↑ Image courtesy of Dr. Roberto Schubert Radiopaedia (original file here).[http://radiopaedia.org/licence Creative Commons BY-SA-NC

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [2]