首次放疗时间对锥形束计算机断层扫描图像误差的影响
摘要
目的探讨不同首次放疗时间对患者锥形束计算机断层扫描(CBCT)图像误差的影响。方法回顾性分析48例头颈部肿瘤患者的临床资料,根据首次放疗时间分为观察组28例与对照组20例。所有患者均给予CBCT扫描,记录并比较两组患者摆位误差情况。结果两组X轴、Y轴、Z轴方向的摆位误差比较,差异均无统计学意义(均P>0. 05)。对照组有15. 0%(3/20)的患者需要经过再次摆位,观察组有10. 7%(3/28)的患者需要经过再次摆位。结论不同首次放疗时间对CBCT摆位误差无明显影响,主治医生在场对提高放疗精确度有积极作用。
引文
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[2] Schmidt ML,Hoffmann L,Knap MM,et al. Cardiac and respiration induced motion of mediastinal lymph node targets in lung cancer patients throughout the radiotherapy treatment course[J]. Radiother Oncol,2016,121(1):52-58.
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[5] Kawahara D,Ozawa S,Nakashima T,et al. Interfractional diaphragm changes during breath-holding in stereotactic body radiotherapy for liver cancer[J]. Rep Pract Oncol Radiother,2018,23(2):84-90.
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[8] Aouadi S,Vasic A,Paloor S,et al. Generation of synthetic CT using multi-scale and dual-contrast patches for brain MRI-only external beam radiotherapy[J]. Phys Med,2017,42(13):174-184.
[9]李庆,尹龙斌,谢慧轻,等.鼻咽癌调强放疗中摆位误差的变化趋势:基于千伏级锥形束CT的前瞻性研究[J].放射学实践,2017,32(8):870-875.
[10] Consorti R,Fidanzio A,Brainovich V,et al. EPID-based in vivo dosimetry for stereotactic body radiotherapy of nonsmall cell lung tumors:initial clinical experience[J]. Phys Med,2017,42(25):157-161.
[11] Zhao B,Maquilan G,Jiang S,et al. Minimal mask immobilization with optical surface guidance for head and neck radiotherapy[J]. J Appl Clin Med Phys,2018,19(1):17-24.
[12] Tan Z,Liu C,Zhou Y,et al. Preliminary comparison of the registration effect of 4D-CBCT and 3D-CBCT in imageguided radiotherapy of stage IA non-small-cell lung cancer[J]. J Radiat Res,2017,58(6):854-861.
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[14] Taniguchi T,Hara T,Shimozato T,et al. Influence of acquisition mode of cone-beam computed tomography on accuracy of image registration for image-guided radiotherapy[J]. Nihon Hoshasen Gijutsu Gakkai Zasshi,2017,73(8):646-653.
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[16] Poon M,Holborn C,Cheng KF,et al. Evaluation of deformed image-based dose calculations for adaptive radiotherapy of nasopharyngeal carcinoma[J]. Med Dosim,2017,42(4):273-281.
[17] Myronakis M,Star-Lack J,Baturin P,et al. A novel multilayer MV imager computational model for component optimization[J]. Med Phys,2017,44(8):4 213-4 222.
[18]彭小保,陈文强,赵军军,等.图像引导技术在周围型肺癌患者放疗中的应用[J].现代肿瘤医学,2017,25(19):3 134-3 137.
[19] Zhong H,Chetty IJ. Adaptive radiotherapy for NSCLC patients:utilizing the principle of energy conservation to evaluate dose mapping operations[J]. Phys Med Biol,2017,62(11):4 333-4 345.
[20] Bertholet J,Worm E,Hyer M,et al. Cone beam CT-based set-up strategies with and without rotational correction for stereotactic body radiation therapy in the liver[J]. Acta Oncol,2017,56(6):860-866.
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[22] Zhang B,Wong JW,Iordachita II,et al. Evaluation of on-and off-line bioluminescence tomography system for focal irradiation guidance[J]. Radiat Res,2016,186(6):592-601.
[23] Onal C,Dolek Y,Ozdemir Y. The impact of androgen deprivation therapy on setup errors during external beam radiation therapy for prostate cancer[J]. Strahlenther Onkol,2017,193(6):472-482.
[24] Abdoli M,Van Kranen SR,Stankovic U,et al. Mitigating differential baseline shifts in locally advanced lung cancer patients using an average anatomy model[J]. Med Phys,2017,44(7):3 570-3 578.
[25] Calvo-Ortega JF,Hermida-López M,Moragues-Femenía S,et al. Investigating the spatial accuracy of CBCT-guided cranial radiosurgery:a phantom end-to-end test study[J].Phys Med,2017,35(11):81-87.