Rotational IMRT (VMAT and Tomotherapy) has now been implemented in many radiotherapy centres. An audit to verify treatment planning system modelling and treatment delivery has been undertaken to ensure accurate clinical implementation.34 institutions with 43 treatment delivery systems took part in the audit. A virtual phantom planning exercise (3DTPS test) and a clinical trial planning exercise were planned and independently measured in each institution using a phantom and array combination. Point dose differences and global gamma index (γ) were calculated in regions corresponding to PTVs and OARs.Point dose differences gave a mean (±sd) of 0.1±2.6

作者：Catharine H, Clark；Mohammad, Hussein；Yatman, Tsang；Russell, Thomas；Dean, Wilkinson；Graham, Bass；Julia, Snaith；Clare, Gouldstone；Steve, Bolton；Rebecca, Nutbrown；Karen, Venables；Andrew, Nisbet

来源：Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2014 年 113卷 2期