Evaluation of MR cisternography of the cerebellopontine angle using a balanced fast-field-echo sequence: preliminary findings
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We evaluated the feasibility of MR cisternography by the balanced fast-field-echo (bFFE) sequence, comparing with that by a turbo-spin-echo (TSE) sequence, for cerebellopontine angle lesions on a 1.5-T imager (Gyroscan Intera, Philips, Best, The Netherlands). The bFFE MR cisternograms depicted target cranial nerves with less cerebrospinal fluid pulsation artifacts than TSE cisternograms and visualized an acoustic schwannoma in 6 of 44 patients with suspicion and a causative vessel of hemifacial spasm in all of 3 patients in a short scanning time (1 min 53 s). The bFFE sequence can be promising for MR cisternography in the diagnosis of cerebellopontine angle lesions.
KeywordsMR imaging Cisternography Acoustic schwannoma Neurovascular compression
- 1.Van der Meulen P, Groen JP, Cuppen JJM (1985) Very fast MR imaging by field echoes and small angle excitation. Magn Reson Imaging 3:297–299Google Scholar
- 2.Van der Meulen P, Groen JP, Tinus AMC, Bruntink G (1988) Fast field-echo imaging: an overview and contrast calculations. Magn Reson Imaging 6:365–368Google Scholar
- 4.Naganawa S, Koshikawa T, Fukatsu H, Ishigaki T, Fukuta T (2001) MR cisternography of the cerebellopontine angle: comparison of three-dimensional fast asymmetrical spin-echo and three-dimensional constructive interference in the steady-state sequences. Am J Neuroradiol 22:1179–1185PubMedGoogle Scholar
- 6.Stuckey SL, Harris AJ, Mannolini SM (1996) Detection of acoustic schwannoma: use of constructive interference in the steady-state three-dimensional MR. Am J Neuroradiol 17:1197–1225Google Scholar