Abstract
To evaluate the efficacy of a gradient-echo sequence (3DFT-CISS) in the diagnosis of acoustic neuromas, two independent observers twice reviewed the images of the temporal bones of 83 patients. Contrast-enhanced T1-weighted spin echo images were used as the reference, showing 18 acoustic neuromas, including 5 purely intracanalicular and one intralabyrinthine tumours. High sensitivity (89-94 %), specificity (94–97 %) and accuracy (94–95 %) were found. Intraobserver (kappa 0.93–1) and interobserver (kappa 0.83–0.84) reproducibility were very good. The smallest intracanalicular tumour was overlooked twice by both observers; the intralabyrinthine tumour once by one observer. All tumours were detected with a less stringent decision criterion, at the expense of lower specificity.
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Received: 2 September 1996 Accepted: 19 November 1996
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Hermans, R., der Goten, A., Foer, B. et al. MRI screening for acoustic neuroma without gadolinium: value of 3DFT-CISS sequence. Neuroradiology 39, 593–598 (1997). https://doi.org/10.1007/s002340050474
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DOI: https://doi.org/10.1007/s002340050474