Proceedings of the XV Symposium Neuroradiologicum pp 401-402 | Cite as
Three-dimensional MRI in acoustic neuroma
Abstract
Twenty-four patients with acoustic neuroma were studied with 1.5 T MRI. Tumour extirpation was performed in all cases. We evaluated the detectability of tumour, cyst formation, deposits of haemosiderin, and residual tumour on MRI. MRI diagnoses were compared with histological findings and operative records. The detectability of acoustic neuroma by three-dimensional (3D) MRI and spin echo was the same; however, the characteristics of a tumour such as a cyst formation and deposits of haemoside in were depicted in greater detail by 3D MRI. 3D MRI was considered to be able to detect a residual tumour in the postoperative state. 3D MRI was very useful for the preoperative diagnosis of acoustic neuroma, but should also be used in the postoperative management of such patients.
Key words
Acoustic neuroma Three-dimensional magnetic resonance imaging Cyst formationReferences
- 1.Press GA, Hesselink JR (1988) MR imaging of cerebellopontine angle and internal auditory canal lesions at 1.5 T. 150:1371–1381.Google Scholar
- 2.Gomori JM, Grossman RI, Goldberg HI, Hackney DG, Zimmerman RA, Bilaniuk LT (1986) Occult cerebral vascular malformations: high-field MR imaging. Radiology 158:707–713.PubMedGoogle Scholar