J Cancer 2018; 9(23):4477-4483. doi:10.7150/jca.26547 This issue Cite

Research Paper

Feasibility and Efficacy of Simultaneous Integrated Boost Intensity-modulated Radiation Therapy based on MRI-CT fusion in Patients with Brain Metastases of Non-small Cell Lung Cancer

Yinping Dong1,3, Yanke Zhang2, Tianyi Zhang1, Min Fan3, Jian Zhu3, Baosheng Li3, Wei Huang3✉

1. School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, China;
2. Department of Radiation Oncology, the General Hospital of Yan-zhou Mining Group, Jining, China;
3. Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan, China

Citation:
Dong Y, Zhang Y, Zhang T, Fan M, Zhu J, Li B, Huang W. Feasibility and Efficacy of Simultaneous Integrated Boost Intensity-modulated Radiation Therapy based on MRI-CT fusion in Patients with Brain Metastases of Non-small Cell Lung Cancer. J Cancer 2018; 9(23):4477-4483. doi:10.7150/jca.26547. https://www.jcancer.org/v09p4477.htm
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Abstract

Purpose: To assess the feasibility and therapeutic effects of simultaneous integrated boost intensity-modulated radiation therapy (SIB-IMRT) based on the fusion imaging of magnetic resonance imaging (MRI) and computed tomography (CT) as a dose-intensive technique in patients with brain metastases (BM) of non-small cell lung cancer (NSCLC).

Methods and materials: Forty-six NSCLC patients with 1 to 7 brain metastases were enrolled in this retrospective study between November, 2011 and February, 2017. Thirty-one patients (67.4%) had 1-3 metastases (oligometastases), otherwise, more than 3 metastases were seen in only 15 patients (32.6%). GTV (Gross tumor volume) contouring was based on the fusion imaging of MRI-CT, WBRT was prescribed in 37.5 Gy/15 fractions with a simultaneous boost in the metastatic lesions of 52.5 Gy/15 fractions.

Results: The median overall survival (OS) and intracranial progression free survival (PFS) for all the patients were 20.0 months and 11.0 months, respectively. The 6-month and 1-year OS were 87.0% and 69.6% respectively, while the 6-month and 1-year PFS were 78.3% and 43.5% respectively. Until the end of the follow-up, 16 patients (34.8%) were alive. No evidence of intracranial progress or recurrence was found in 6 patients (13.0%) during the follow-up.

Conclusion: SIB-IMRT with the dose/fractionation based on the fusion imaging of MRI-CT is feasible and safe. It is beneficial to the NSCLC patients with BM and can reduce the overall costs of treatment.

Keywords: non-small cell lung cancer (NSCLC), simultaneous integrated boost (SIB), intensity-modulated radiation therapy (IMRT), brain metastases (BM), magnetic resonance imaging (MRI)


Citation styles

APA
Dong, Y., Zhang, Y., Zhang, T., Fan, M., Zhu, J., Li, B., Huang, W. (2018). Feasibility and Efficacy of Simultaneous Integrated Boost Intensity-modulated Radiation Therapy based on MRI-CT fusion in Patients with Brain Metastases of Non-small Cell Lung Cancer. Journal of Cancer, 9(23), 4477-4483. https://doi.org/10.7150/jca.26547.

ACS
Dong, Y.; Zhang, Y.; Zhang, T.; Fan, M.; Zhu, J.; Li, B.; Huang, W. Feasibility and Efficacy of Simultaneous Integrated Boost Intensity-modulated Radiation Therapy based on MRI-CT fusion in Patients with Brain Metastases of Non-small Cell Lung Cancer. J. Cancer 2018, 9 (23), 4477-4483. DOI: 10.7150/jca.26547.

NLM
Dong Y, Zhang Y, Zhang T, Fan M, Zhu J, Li B, Huang W. Feasibility and Efficacy of Simultaneous Integrated Boost Intensity-modulated Radiation Therapy based on MRI-CT fusion in Patients with Brain Metastases of Non-small Cell Lung Cancer. J Cancer 2018; 9(23):4477-4483. doi:10.7150/jca.26547. https://www.jcancer.org/v09p4477.htm

CSE
Dong Y, Zhang Y, Zhang T, Fan M, Zhu J, Li B, Huang W. 2018. Feasibility and Efficacy of Simultaneous Integrated Boost Intensity-modulated Radiation Therapy based on MRI-CT fusion in Patients with Brain Metastases of Non-small Cell Lung Cancer. J Cancer. 9(23):4477-4483.

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