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Table 5 Minimum dose (Gy) to 100% of the PTV volume.

From: Dosimetric comparison of Helical Tomotherapy and Gamma Knife Stereotactic Radiosurgery for single brain metastasis

  TOMOTHERAPY GAMMA KNIFE
Patient #1 19.3 22.8
Patient #2 16.4 17.6
Patient #3 12.6 14.1
Patient #4 17 19.1
Patient #5 15.4 15.2