Improved dose homogeneity in scalp irradiation using a single set-up point and different energy electron beams.

摘要: Homogeneous irradiation of the entire or a large portion superficial scalp poses both technical and dosimetric challenges. Some techniques will irradiate too much underlying normal brain while other are either complex involve field matching problems may require sophisticated linear accelerator (linac) add-ons such as intensity modulated radiation therapy (IMRT)/electron multileaf collimation. However, many radiotherapy facilities not equipped with treatment modalities. We propose practical technique that can be delivered standard linac capable producing high energy electrons. The proposed offers simple alternative for achieving results equivalent to IMRT. Dose homogeneity throughout volume is achieved by aiming different electron beams at differential areas surface achieve improved dosimetry rapid delivery, using single set-up point. introduced this our institution treat cancers irregular surfaces.