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Figure 1: Radiological features and details of radiotherapy: Magnetic resonance imaging (MRI) revealed a mass in the tectal plate that was T2-hyperintense (a) and showed no contrast enhancement in axial contrast enhanced T1-weighted images (b). (c) Fused MR – CT image for target delineation. T1 weighted image taken for fusion; (d) Dose colour wash for 50.4 Gray (prescribed at 95% isodose) in a 3D CRT plan

Figure 1: Radiological features and details of radiotherapy: Magnetic resonance imaging (MRI) revealed a mass in the tectal plate that was T2-hyperintense (a) and showed no contrast enhancement in axial contrast enhanced T1-weighted images (b). (c) Fused MR – CT image for target delineation. T1 weighted image taken for fusion; (d) Dose colour wash for 50.4 Gray (prescribed at 95% isodose) in a 3D CRT plan