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. Author manuscript; available in PMC: 2011 Apr 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2010 Apr;76(5):1554–1562. doi: 10.1016/j.ijrobp.2009.04.003

Table 2.

Summary of dose indices of the brain case studies.

ROI Dose Index IMRT IMAT AMRT
Case 4 PTV * V95% 94.2% 99.8% 98.3%
Brainstem 0.5 cc 53.0 Gy 53.5 Gy 52.7 Gy
Left Optic Nerve Max Dose 55.2 Gy 54.6 Gy 53.3 Gy
Left Eye Max Dose 36.0 Gy 28.8 Gy 28.5 Gy
Right Eye Max Dose 28.8 Gy 36.6 Gy 36.8 Gy
Case 5 CTV * V95% 95.0% 97.0% 95.7%
Brainstem 0.5 cc 58.5 Gy 55.8 Gy 59.5 Gy
Optic Chiasm Max Dose 51.9 Gy 51.6 Gy 53.5 Gy
Left Optic Nerve Max Dose 57.4 Gy 56.9 Gy 58.3 Gy
Right Optic Nerve Max Dose 39.0 Gy 39.8 Gy 38.1 Gy
Case 6 PTV * V95% 98.8% 99.2% 99.8%
Brainstem 0.5 cc 54.6 Gy 53.9 Gy 53.5 Gy
Left Optic Nerve Max Dose 43.6 Gy 48.1 Gy 50.2 Gy
Right Optic Nerve Max Dose 42.8 Gy 44.5 Gy 49.1 Gy
Left Eye Max Dose 39.1 Gy 38.2 Gy 41.2 Gy
Right Eye Max Dose 46.1 Gy 40.9 Gy 39.4 Gy
*

V95% is the volume of ROI receiving 95% of the prescription dose.