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Figure 2 | SpringerPlus

Figure 2

From: CyberKnife multisession stereotactic radiosurgery and hypofractionated stereotactic radiotherapy for perioptic meningiomas: intermediate-term results and radiobiological considerations

Figure 2

Tumor control probability (TCP) and normal tissue complication probability (NTCP) curves for meningioma treated using a 5 fractions scheme. The TCP curve was built using an α/β of 2 for meningiomas. TCP values are 4.8% for 2400 cGy, 31% for 2500 cGy, 91% for 2750 cGy and 100% for 3300 cGy. The NTCP of the optic nerve and chiasm using the same irradiation scheme, according to the Lyman-Kutcher-Burman model, results respectively 0.02% for a dose of 2400 Gy, 0.12% for 2500 cGy, 2.98% for 2750 cGy and 43% for 3300 cGy.

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