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Horizontal T2-weighted magnetic resonance imaging scans demonstrating the comparison between the inverse planning strategy and Leksell GammaPlan for a representative acoustic neuroma case adjacent to the brain stem. Left, Leksell GammaPlan with C = 0.99 and S = 0.84. Right, inverse planning with C = 0.98 and S = 0.94. The red-black shaded area represents the intersection of the TV (red) and the 12-Gy prescription isodose (yellow).
