PMC4596050_01
Preoperative magnetic resonance imaging views of the patient (a) Sagittal T1-weighted cerebral magnetic resonance imaging showing a third ventricular colloid cyst and significant hydrocephalus with ballooning of the corpus callosum. (b) Axial T1 view of the same patient
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F1
Gammknife plan summary showing axial, coronal and sagittal T1 weighted with contrast MRI views. 13 Gy at 65% was prescribed
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F2
It prescribed 13 Gy to the 65% isodose line [Figure 2].
43 months Postoperative and Postradiosurgical Gammaknife treatment MRI views (a) Sagital T1 weighted cerebral MRI showing that the third ventricular colloid cyst has remained essentially the same with complete resolution of the hydrocephalus. Corpus callosum with normal thickness. (b) Axial T1 views of the same patient
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F3