光学体表追踪技术与主动呼吸控制技术对左侧乳腺癌DIBH放射治疗摆位精度和治疗时间的影响  

Effect of optical body surface tracing technique versus active breathing control on setup accuracy and treatment time during DIBH radiotherapy for left-sided breast cancer

作　　者：刘剑锋 钟鹤立 张光伟 吴何苟 刘婷婷 高勇 杨东 李彬 LIU Jian-feng;ZHONG He-li;ZHANG Guang-wei(Department of Radiation Oncology,Shenzhen People's Hospital(Second Clinical Medical College of Jinan University,First Affiliated Hospital of Southern University of Science and Technology),Shenzhen,518020,China)

机构地区：[1]深圳市人民医院(暨南大学第二临床医学院,南方科技大学第一附属医院)肿瘤放疗科,518020

出　　处：《中国实用医药》2023年第10期1-6,共6页China Practical Medicine

基　　金：国家自然科学基金面上项目(项目编号:61871374)。

摘　　要：目的 观察光学体表追踪技术与主动呼吸控制(ABC)技术对左侧乳腺癌深吸气屏气(DIBH)放射治疗(放疗)摆位精度和治疗时间的影响。方法 70例实施DIBH放疗技术的左侧乳腺癌患者,因其自身条件选择更适用的技术,无治疗技术局限的患者随机分为D0组和D1组,每组35例。D0组应用光学体表追踪技术控制门控点起伏幅度进行治疗,D1组应用ABC技术控制吸气量进行治疗。比较两组患者锥形束计算机断层成像(CBCT)配准摆位误差、摆位时间、出束治疗时间。结果 D0组配准平移误差x(0.13±0.09)cm、y(0.19±0.14)cm、z(0.17±0.11)cm以及旋转误差Rx(0.83±0.58)°、Ry(0.67±0.54)°、Rz(0.58±0.50)°与D1组的(0.13±0.10)cm、(0.17±0.12)cm、(0.16±0.11)cm、(0.72±0.54)°、(0.72±0.51)°、(0.55±0.44)°比较,差异均无统计学意义(P>0.05)。D0组摆位时间(2.32±0.48)min与D1组的(2.16±0.34)min比较,差异无统计学意义(P>0.05)。D0组出束治疗时间(5.57±0.65)min短于D1组的(7.15±1.48)min,差异具有统计学意义(P<0.05)。结论 通过对患者治疗方式的合适选择,C-RAD光学体表追踪技术与ABC技术均可精准实现左侧乳腺癌DIBH放疗摆位,两者CBCT配准摆位误差、摆位时间无统计学差异,但ABC技术出束治疗时间相对较长。Objective To observe the effect of optical body surface tracing technique versus active breathing control(ABC)on setup accuracy and treatment time during deep inspiration breath hold(DIBH)radiotherapy for left-sided breast cancer.Methods 70 patients with left-sided breast cancer receiving DIBH radiotherapy were divided into D0 group and D1 group,with 35 patients in each group.When grouping,note techniques that were more suitable for patients because of their own conditions,patients with no therapeutic limitations were randomized.D0 group was treated with optical body surface tracking technology to control the amplitude of gated point fluctuation,D1 group was treated with ABC technology to control inspiratory volume.The cone beam CT(CBCT)registration errors,setup time and beam treatment time were compared between the two groups.Results The registration translation error x,y,z and rotation error Rx,Ry,Rz of D0 group were(0.13±0.09),(0.19±0.14),(0.17±0.11)cm and(0.83±0.58)°,(0.67±0.54)°,(0.58±0.50)°,and those of D1 group were(0.13±0.10),(0.17±0.12),(0.16±0.11)cm,and(0.72±0.54)°,(0.72±0.51)°,(0.55±0.44)°;the differences were not statistically significant(P>0.05).There was no statistically significant difference in the setup time between D0 group[(2.32±0.48)min]and D1 group[(2.16±0.34)min](P>0.05).The beam treatment time of(5.57±0.65)min in D0 group was shorter than that of(7.15±1.48)min in D1 group,and the difference was statistically significant(P<0.05).Conclusion With suitable selection of treatment modalities for patients,both C-RAD optical body surface tracing and ABC techniques can achieve setup accuracy during DIBH radiotherapy for left-sided breast cancer,with no statistical difference in CBCT registration errors and setup time between the two,but the beam treatment time of ABC technique is relatively long.

关 键 词：光学体表追踪 主动呼吸控制 左侧乳腺癌 放射治疗 

分 类 号：R737.9[医药卫生—肿瘤] R730.55[医药卫生—临床医学]