Department of Radiology, University of Tokyo Hospital, Japan.
J Radiat Res. 2012;53(1):151-3. doi: 10.1269/jrr.11159. Epub 2012 Jan 13.
We have successfully created a single arc volumetric modulated arc therapy (VMAT) plan for treating post-surgical left breast/chest wall and regional nodes using Elekta multileaf collimator (MLC). Dose volume histograms (DVHs) were compared between the VMAT plans and conventional tangential beam plans using a field-in-field technique, leading to significant DVH advantages in the VMAT plans. The difference between Elekta VMAT and Varian RapidArc due to different MLC designs was discussed in terms of the number of arcs required to cover a large target, highlighting a single arc capability of Elekta VMAT for a large target volume which may be less sensitive to unexpected organ motion during dose delivery.
我们成功地为使用 Elekta 多叶准直器（MLC）治疗术后左乳房/胸壁和区域淋巴结创建了一个单次弧形容积调制弧形治疗（VMAT）计划。通过场中场技术，比较了 VMAT 计划和常规切线束计划的剂量体积直方图（DVH），结果表明 VMAT 计划具有显著的 DVH 优势。讨论了 Elekta VMAT 和瓦里安 RapidArc 由于 MLC 设计不同而导致的差异，涉及覆盖大靶区所需的弧数，突出了 Elekta VMAT 对于大靶区体积的单弧能力，这可能对剂量输送过程中意外器官运动的敏感性较低。
