To investigate the patient-specific dose verification method using ArcCHECK for total marrow irradiation (TMI) with Volumetric Modulated Arc Therapy(VMAT) and Helical Tomotherapy(HT) . The kVCT images col ected from 8 patients were respectively designed for RapidArc and Tomotherapy plans in total marrow irradiation. ArcCHECK was used for dose verification for the head-neck, chest-abdomen and pelvic. The merging function of ArcCHECK was used in VMAT and the method of double plans(reference and delivery plans) were used in HT. The γ-analysis passing rates for the head-neck, chest-abdomen, pelvic were 98.9%±1.9%, 98.4%±1.8%, 97.4%±2.1% for VMAT plans and 94.3%±1.5%, 96.5±1.2%, 94.1%±1.9% for HT plans. The results show that using the merging function of ArcCHECK can achieve the dose verification wel for VMAT plans with TMI, The method of double plans was done for the dose verification of HT plans with TMI as wel as the plans with the targets keeping away from the set-up center.%探讨利用ArcCHECK对VMAT（Volumetric Modulated Arc Therapy）和HT (Helical Tomotherapy)全骨髓照射（TMI）超长靶区计划的验证方法。选取8例全身扫描患者，分别设计TMI计划。采用ArcCHECK对两组计划头颈、胸腹及盆腔三部位行验证分析。VMAT组采用模体Merge功能通过平移治疗床实现， HT组采用双计划（参考/执行）法得以完成，三部位验证通过率分别为98.9%±1.9%/94.3%±1.5%、98.4%±1.8%/96.5%±1.2%、97.4%±2.1%/94.1%±1.9%。表明利用ArcCHECK的Merge功能能较好地完成VMAT超长靶区的验证，采用双计划法实现了对HT超长靶区及远离中心部分靶区的验证。
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