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MR images of a 52-year-old man obtained 1 year and 3 months after surgery.A, A 3-mm-thick FSE T2-weighted image obtained at the level of the middle cerebellar.

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Presentation on theme: "MR images of a 52-year-old man obtained 1 year and 3 months after surgery.A, A 3-mm-thick FSE T2-weighted image obtained at the level of the middle cerebellar."— Presentation transcript:

1 MR images of a 52-year-old man obtained 1 year and 3 months after surgery.A, A 3-mm-thick FSE T2-weighted image obtained at the level of the middle cerebellar peduncle shows a focal hyperintensity at the right lateral angle of the fourth ventricle in the br... MR images of a 52-year-old man obtained 1 year and 3 months after surgery.A, A 3-mm-thick FSE T2-weighted image obtained at the level of the middle cerebellar peduncle shows a focal hyperintensity at the right lateral angle of the fourth ventricle in the brain stem (arrow).B–D, Alternate CISS MR images show that the hyperintensity is contiguous (arrows). The lower end of the hyperintense area is located more anteriorly and deeper on the fourth ventricle floor, and the upper end is more posteromedial. K. Okamoto et al. AJNR Am J Neuroradiol 2006;27: ©2006 by American Society of Neuroradiology

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