1.陆军军医大学第一附属医院肿瘤科,重庆 400038
2.中核安科锐天津医疗科技有限责任公司,天津 300300
Received:05 January 2025,
Revised:2025-03-11,
Accepted:19 March 2025,
Published:28 July 2025
移动端阅览
冉凤伟,李纪伟,张康,等.3种分次立体定向放射治疗技术在颅内寡转移瘤中剂量学研究[J].重庆医科大学学报,2025,50(7):913-919.
Ran Fengwei,Li Jiwei,Zhang Kang,et al.Three fractionated stereotactic radiotherapy techniques in treatment of intracranial oligometastases: a dosimetric study[J].Journal of Chongqing Medical University,2025,50(7):913-919.
冉凤伟,李纪伟,张康,等.3种分次立体定向放射治疗技术在颅内寡转移瘤中剂量学研究[J].重庆医科大学学报,2025,50(7):913-919. DOI: 10.13406/j.cnki.cyxb.003842.
Ran Fengwei,Li Jiwei,Zhang Kang,et al.Three fractionated stereotactic radiotherapy techniques in treatment of intracranial oligometastases: a dosimetric study[J].Journal of Chongqing Medical University,2025,50(7):913-919. DOI: 10.13406/j.cnki.cyxb.003842.
目的
2
比较螺旋断层放射治疗(tomotherapy,TOMO)、容积旋转调强放射治疗(volumetric modulated arc therapy,VMAT)和射波刀(cyberKnife,CK)3种分次立体定向放射治疗技术在治疗颅内寡转移瘤中剂量学特性,评估其剂量分布、治疗效率及对危及器官受量差异。
方法
2
采用回顾性分析方法,收集2021年至2023年在陆军军医大学第一附属医院接受分次立体定向放射治疗的54例颅内寡转移瘤患者的临床资料。在Varian Eclipse 16.1医生工作站中完成所有患者肿瘤靶区的勾画,在MANTEIA AccContour 3.2软件中完成危及器官(如脑干、脊髓、视神经等)勾画。将勾画好的结构和图像传输至TOMO、CK及Eclipse系统,并分别设计3种不同放射治疗技术治疗计划。为评估3种放射治疗技术剂量学特性,通过剂量体积直方图(dose-volume histogram,DVH)分析了以下关键参数:靶区适形度指数(conformity index,CI)、剂量均匀性指数(homogeneity index,HI)、出束时间(TIME)、机器跳数(monitor units,MU),以及危及器官的受照剂量。
结果
2
TOMO、VMAT和CK计划均实现处方剂量要求。TOMO计划的CI为1.05,稍优于VMAT(1.09)和CK(1.17)(
P
<
0.001)。VMAT计划的HI为1.15,优于CK(1.28)和TOMO(1.46)(
P
<
0.001)。在计划执行效率上,VMAT计划出束时间(5 min,1 633 MU),小于TOMO计划出束时间(10 min,8 932MU)和CK计划出束时间(39 min,5 191 MU)(
P
<
0.001)。在危及器官的受照剂量方面,CK对晶体保护最佳,右晶体和左晶体的最大剂量(D
max
)分别为15 cGy和17 cGy,TOMO在右耳蜗剂量控制上具有优势,平均剂量(D
mean
)为88 cGy,而VMAT在脊髓剂量限制方面表现最优,D
max
为31 cGy(
P
<
0.05)。
结论
2
本研究表明,在治疗颅内寡转移瘤中,TOMO、VMAT和CK均能满足处方剂量要求并有效保护危及器官。临床应用中,可结合病灶特征和治疗目标,选择最适宜的技术以实现个性化治疗。
Objective
2
To compare the dosimetric characteristics of three fractionated stereotactic radiotherapy techniques,i.e.,tomotherapy(TOMO),volumetric-modulated arc therapy(VMAT),and CyberKnife(CK),in the treatment of intracranial oligometastases,and to assess their dose distribution,treatment efficiency,and difference in dose delivered to organs at risk(OARs).
Methods
2
A retrospective analysis was performed for the clinical data of 54 patients with intracranial oligometastases who underwent fractionated stereotactic radiotherapy in The First Affiliated Hospital of Army Medical University in 2021-2023. Varian Eclipse 16.1 Physician Workstation was used to perform tumor target volume delineation,and MANTEIA AccContour 3.2 software was used to perform the delineation of OARs,such as brainstem,spinal cord,and optical nerves. The delineated structures and images were transmitted to TOMO,CK,and Eclipse treatment planning systems to design three different radiotherapy treatment plans. Related key parameters were analyzed using the dose-volume histogram to evaluate the dosimetric characteristics of these three radiotherapy techniques,including conformity index (CI) of the target,dose homogeneity index(HI),beam-on time,the number of monitor units(MU),and the exposure dose of OARs.
Results
2
All three treatment plans(TOMO,VMAT,and CK) met the requirements for prescribed dose. TOMO had a slightly better CI than VMAT and CK(1.05 vs. 1.09 and 1.17,
P
<
0.001). VMAT had a better HI than CK and TOMO(1.15 vs. 1.28 and 1.46,
P
<
0.001). In terms of execution efficiency,VMAT had a significantly shorter beam-on time than TOMO and CK(5 minutes,1 633 MU vs. 10 minutes,8 932 MU and 39 minutes,5 191 MU,
P
<
0.001). In terms of the exposure dose of OARs,CK provided the best protection for the lens,with a maximum dose of 15 cGy for the right lens and 17 cGy for the left lens,and TOMO had an advantage in dose control for the right cochlea,with a mean dose of 88 cGy,while VMAT had the best performance in limiting the dose for the spinal cord,with a maximum dose of 31 cGy(
P
<
0.05).
Conclusion
2
This study shows that TOMO,VMAT,and CK all meet the requirements for the prescribed dose and can effectively protect OARs in the treatment of intracranial oligometastases. In clinical practice,the most appropriate technique should be selected based on the features of lesions and treatment goals to achieve individualized treatment.
Nayak L , Lee EQ , Wen PY . Epidemiology of brain metastases [J ] . Curr Oncol Rep , 2012 , 14 ( 1 ): 48 - 54 .
Giuseppe ZR , Silvia C , Eleonora F , et al . Hippocampal-sparing radiotherapy and neurocognitive impairment:a systematic literature review [J ] . J Cancer Res Ther , 2020 , 16 ( 6 ): 1215 - 1222 .
Yan Q , Li R , Yang JY , et al . Efficacy and safety evaluation of combined therapies incorporating whole-brain radiotherapy in patients with brain metastases:a systematic review and meta-analysis [J ] . Clin Transl Oncol , 2024 , 26 ( 12 ): 3020 - 3036 .
Chen H , Louie AV , Higginson DS , et al . Stereotactic radiosurgery and stereotactic body radiotherapy in the management of oligometastatic disease [J ] . Clin Oncol , 2020 , 32 ( 11 ): 713 - 727 .
Brown PD , Jaeckle K , Ballman KV , et al . Effect of radiosurgery alone vs radiosurgery with whole brain radiation therapy on cognitive function in patients with 1 to 3 brain metastases:a randomized clinical trial [J ] . JAMA , 2016 , 316 ( 4 ): 401 - 409 .
Greenwood H , Hassan J , Fife K , et al . Single-fraction stereotactic ablative body radiotherapy for primary and extracranial oligometastatic cancers [J ] . Clin Oncol , 2023 , 35 ( 12 ): 773 - 786 .
Gawish A , Abdulayev N , El-Arayed S , et al . A single-center experience with linear accelerator-based stereotactic radiotherapy for meningiomas:hypofractionation and radiosurgery [J ] . J Cancer Res Clin Oncol , 2023 , 149 ( 1 ): 103 - 109 .
de Melo LP , Arruda Viani G , de Paula JS . Radiotherapy for the treatment of optic nerve sheath meningioma:a systematic review and meta-analysis [J ] . Radiother Oncol , 2021 , 165 : 135 - 141 .
Kraus KM , Kampfer S , Wilkens JJ , et al . Helical tomotherapy:Comparison of Hi-ART and Radixact clinical patient treatments at the Technical University of Munich [J ] . Sci Rep , 2020 , 10 : 4928 .
Alsaihaty Z , Abdul Manan H , Sabarudin A , et al . Hybrid treatment planning for chest wall irradiation utilizing three-dimensional conformal radiotherapy(3DCRT),intensity-modulated radiation therapy (IMRT),and volumetric modulated arc therapy(VMAT):a systematic review [J ] . Cureus , 2024 , 16 ( 5 ): e59583 .
Telentschak S , Ruess D , Grau S , et al . Cyberknife ® hypofractionated stereotactic radiosurgery(CK-hSRS) as salvage treatment for brain metastases [J ] . J Cancer Res Clin Oncol , 2021 , 147 ( 9 ): 2765 - 2773 .
陈杰添 , 程涛 , 陈科权 , 等 . 容积调强和射波刀在颅内肿瘤不规则病灶立体定向放疗中对剂量跌落梯度和适形指数的影响 [J ] . 医药前沿 , 2023 , 13 ( 8 ): 53 - 55 .
Chen JT , Cheng T , Chen KQ , et al . The Influence of Volumetric Modulated Arc Therapy(VMAT) and CyberKnife on Dose Gradient and Conformity Index in Stereotactic Radiosurgery for Irregular Intracranial Tumor Lesions [J ] . Front. Med , 2023 , 13 ( 8 ): 53 - 55 .
Song YQ , Hong J , Wang JY , et al . Dosimetric comparison of different intensity-modulated radiotherapy techniques for whole-breast irradiation of right-breast cancer [J ] . Cancer Radiother , 2023 , 27 ( 1 ): 11 - 16 .
Shaw E , Kline R , Gillin M , et al . Radiation therapy oncology group:Radiosurgery quality assurance guidelines [J ] . Int J Radiat Oncol , 1993 , 27 ( 5 ): 1231 - 1239 .
刘永志 , 王红旗 . 立体定向放疗与全脑放疗对肺癌脑转移瘤近期疗效的影响 [J ] . 医药论坛杂志 , 2024 , 45 ( 13 ): 1414 - 1418 .
Liu YZ , Wang HQ . Effects of stereotactic radiotherapy and whole brain radiotherapy on short-term efficacy in lung cancer with brain metastases [J ] . J Medical Forum , 2024 , 45 ( 13 ): 1414 - 1418 .
田智峰 , 杜德希 , 朱明琪 , 等 . 小细胞肺癌全脑放疗后再发病灶立体定向放疗的临床分析 [J ] . 实用肿瘤杂志 , 2023 , 38 ( 5 ): 447 - 455 .
Tian ZF , Du DX , Zhu MQ , et al . Clinical analysis of stereotactic radiotherapy for recurrent lesions of small cell lung cancer after whole brain radiotherapy [J ] . J Pract Oncol , 2023 , 38 ( 5 ): 447 - 455 .
Li S , Xu S , Li L , et al . Efficacy and safety of EGFR-TKI combined with WBRT vs . WBRT alone in the treatment of brain metastases from NSCLC:a systematic review and meta-analysis [J ] . Front Neurol , 2024 , 15 : 1362061 .
Palmer JD , Klamer BG , Ballman KV , et al . Association of long-term outcomes with stereotactic radiosurgery vs whole-brain radiotherapy for resected brain metastasis:a secondary analysis of the N107C/CEC. 3 (alliance for clinical trials in oncology/Canadian cancer trials group) randomized clinical trial [J ] . JAMA Oncol , 2022 , 8 ( 12 ): 1809 - 1815 .
Patil CG , Pricola K , Sarmiento JM , et al . Whole brain radiation therapy (WBRT) alone versus WBRT and radiosurgery for the treatment of brain metastases [J ] . Cochrane Database Syst Rev , 2017 ,9:CD006121.
Duma MN , Heinrich C , Schönknecht C , et al . Helical TomoTherapy for locally advanced or recurrent breast cancer [J ] . Radiat Oncol , 2017 , 12 ( 1 ): 31 .
Peeken JC , Knie C , Kessel KA , et al . Neoadjuvant image-guided helical intensity modulated radiotherapy of extremity sarcomas - a single center experience [J ] . Radiat Oncol , 2019 , 14 ( 1 ): 2 .
Cavinato S , Fusella M , Paiusco M , et al . Quantitative assessment of helical tomotherapy plans complexity [J ] . J Appl Clin Med Phys , 2023 , 24 ( 1 ): e13781 .
Ohtakara K , Suzuki K . Determining simple and effective cost functions for an efficient volumetric-modulated arcs-based stereotactic radiosurgery for single brain metastases using Monaco ® planning system [J ] . Cureus , 2024 , 16 ( 9 ): e70560 .
Oshiro Y , Mizumoto M , Kato Y , et al . Single isocenter dynamic conformal arcs-based radiosurgery for brain metastases:Dosimetric comparison with Cyberknife and clinical investigation [J ] . Tech Innov Patient Support Radiat Oncol , 2024 , 29 : 100235 .
Demir H , Doğan B , Günbey HP , et al . Predictors of local control after robotic stereotactic radiotherapy for brain metastases:10-years-experience after Cyberknife installation [J ] . ANZ J Surg , 2024 , 94 ( 5 ): 833 - 839 .
Kirova YM , Chargari C , Zefkili S , et al . Could helical tomotherapy do whole brain radiotherapy and radiosurgery? [J ] . World J Radiol , 2010 , 2 ( 4 ): 148 - 150 .
陈知然 , 王晓红 , 李向斌 , 等 . 多发脑转移瘤容积旋转调强立体定向放射外科计划对比 [J ] . 中国医学物理学杂志 , 2021 , 38 ( 12 ): 1482 - 1486 .
Chen ZR , Wang XH , Li XBet al . Comparison of volumetric modulated arc therapy stereotactic radiosurgery plans of multiple brain metastases [J ] . Chin J Med Phys , 2021 , 38 ( 12 ): 1482 - 1486 .
魏夏平 , 苏洁洪 , 林楚婕 , 等 . 3种立体定向放射外科技术在不同脑转移瘤个数下的比较 [J ] . 中国医学物理学杂志 , 2022 , 39 ( 11 ): 1329 - 1333 .
Wei XP , Su JH , Lin CJ , et al . Comparison among 3 different SRS techniques in the treatment of single or multiple brain metastases [J ] . Chin J Med Phys , 2022 , 39 ( 11 ): 1329 - 1333 .
Inata H , Tominaga M , Sasaki M , et al . Estimation of imaging intervals and intrafraction displacement in CyberKnife image-guided radiotherapy for intracranial lesions [J ] . Med Phys , 2021 , 48 ( 12 ): 7580 - 7589 .
Ohtakara K , Tanahashi K , Kamomae T , et al . Correlation of brain metastasis shrinking and deviation during 10-fraction stereotactic radiosurgery with late sequela:suggesting dose ramification between tumor eradication and symptomatic radionecrosis [J ] . Cureus , 2023 , 15 ( 1 ): e33411 .
Wang K , Tepper JE . Radiation therapy-associated toxicity:etiology,management,and prevention [J ] . CA Cancer J Clin , 2021 , 71 ( 5 ): 437 - 454 .
Tambe Nilesh S , Pires Isabel M , Craig M , et al . Predicting personalised optimal arc parameter using knowledge-based planning model for inoperable locally advanced lung cancer patients to reduce organ at risk doses [J ] . Biomed Phys Eng Express , 2021 , 7 ( 6 ): e065016 .
0
Views
11
下载量
0
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution
京公网安备11010802024621
