Introduction: The objective is to demonstrate dosimetrically preserving scalp in whole-brain irradiation in the treatment of brain metastases and making dosimetry at 20 points determined on the rando phantom while comparing between Linac and Tomotherapy devices.
Materials and Methods: 10 randomized patients, who had previously undergone radiotherapy for whole-brain metastasis cancer, were determined prospectively. In Helical Tomotherapy (HT) and Linac devices, Intensity-modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) were planned to be 30 Gray(Gy) 10 Fractions for the whole brain region.
Results: The average target volume (PTV), Homogeneity Index (HI), conformity index (CI), and integral dose (ID) for IMRT and VMAT were 0.075, 0.77, 0.94, 0.97 and 29.67, 23.57, respectively. Mean median doses for scalp IMRT and VMAT were 19.71Gy and 18.01 Gy (p
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