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Figure 4: Patient 2: Complete 3D treatment plan demonstrating the principles of isodose lines (50% marked in yellow and 10 Gy marked in green), marginal dose, and tumor coverage (marked in red). 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 green). Conformity between radiation dose pattern and tumor morphology is well maintained by adjusting the number the size of isocenters. Shielding technique is further utilized do further tailor the treatment plan

Figure 4: Patient 2: Complete 3D treatment plan demonstrating the principles of isodose lines (50% marked in yellow and 10 Gy marked in green), marginal dose, and tumor coverage (marked in red). 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 green). Conformity between radiation dose pattern and tumor morphology is well maintained by adjusting the number the size of isocenters. Shielding technique is further utilized do further tailor the treatment plan