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Figure 2: Patient 1: Complete 3D treatment plan demonstrating the principles of isodose line (marked in yellow), marginal dose, and tumor coverage. Planning is done in accordance to avoid radiation dose of >10 Gy to adjacent radiosensitive structures such as brainstem (marked in magenta) and optic apparatus (marked in blue). Conformity between radiation dose pattern and tumor morphology is well maintained by adjusting the number and size of isocenters. Shielding technique is further utilized do further tailor the treatment plan

Figure 2: Patient 1: Complete 3D treatment plan demonstrating the principles of isodose line (marked in yellow), marginal dose, and tumor coverage. Planning is done in accordance to avoid radiation dose of >10 Gy to adjacent radiosensitive structures such as brainstem (marked in magenta) and optic apparatus (marked in blue). Conformity between radiation dose pattern and tumor morphology is well maintained by adjusting the number and size of isocenters. Shielding technique is further utilized do further tailor the treatment plan