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Table 4 Isodose volumes (cubic centimeter) of Helical Tomotherapy and Gamma Knife Stereotactic Radiosurgery Plans in Patients with Single Brain Metastasis.

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

Isodose Line Patient #1   Patient #2   Patient #3   Patient #4   Patient #5  
  Tomo Vol GK Vol Tomo Vol GK Vol Tomo Vol GK Vol Tomo Vol GK Vol Tomo Vol GK Vol
40 Gy 0.009 0.009 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000
35 Gy 0.082 0.136 0.039 0.191 0.000 0.000 0.012 0.009 0.136 0.021
30 Gy 0.208 0.332 0.159 0.320 0.028 0.016 0.096 0.138 0.756 0.119
25 Gy 0.430 0.540 0.371 0.431 0.195 0.067 0.277 0.492 1.685 0.689
20 Gy 0.748 0.905 0.709 0.589 0.476 0.225 0.584 0.938 3.093 2.418
15 Gy 1.315 1.417 1.306 0.877 0.961 0.704 1.099 1.665 5.441 4.750
10 Gy 2.851 2.678 2.865 1.545 2.111 1.344 2.363 2.997 11.986 9.339
5 Gy 11.463 7.643 11.394 4.230 8.739 3.774 9.196 8.309 47.574 22.885
  1. Tomo Vol = Tomotherapy Volume.
  2. GK Vol = Gamma Knife Volume.