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Published in: Annals of Nuclear Medicine 7/2021

01-07-2021 | Radiotherapy | Original Article

Pretreatment 18F-FDG uptake heterogeneity can predict treatment outcome of carbon ion radiotherapy in patients with locally recurrent nasopharyngeal carcinoma

Authors: Guang Ma, Bingxin Gu, Jiyi Hu, Lin Kong, Jiangang Zhang, Zili Li, Yangbo Xue, Jiade Lu, Junning Cao, Jingyi Cheng, Yingjian Zhang, Shaoli Song, Zhongyi Yang

Published in: Annals of Nuclear Medicine | Issue 7/2021

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Abstract

Objective

Our study was to investigate the value of pretreatment 18F-FDG uptake heterogeneity to predict the prognosis of patients with locally recurrent nasopharyngeal carcinoma (LRNPC) treated by carbon ion radiotherapy (CIRT).

Methods

Twenty-nine LRNPC patients who underwent whole-body 18F-FDG PET/CT scanning before CIRT were enrolled. Heterogeneity index (HI)-based 18F-FDG uptake, and the PET/CT traditional parameters, including SUVmax, MTV, and TLG were assessed. Receiver operator characteristics (ROC) determined the best cutoff value, and local recurrence-free survival (LRFS) and progression-free survival (PFS) were evaluated by the Kaplan–Meier method and log-rank test. And the predictive ability was evaluated by the ROC curve. Cox analyses were performed on LRFS and PFS.

Results

In this study, univariate analysis showed that HI was a significant predictor of LRNPC treated by CIRT. HI could be used to predict LRFS and PFS. Patients with HI (≥ 0.81) had a significantly worse prognosis of LRFS (12.25 vs. NR, p = 0.008), and of PFS (10.58 vs. NR, p = 0.014). The AUC and its sensitivity and sensitivity and specificity were 0.75, 84.21% and 70.00% for LRFS and 0.82, 80.95% and 75.00% for PFS, respectively. Multivariate analysis showed that HI was an independent predictor for the LFRS of LRNPC with CIRT.

Conclusion

18F-FDG uptake heterogeneity may be useful for predicting the prognosis of patients with LRNPC treated by CIRT.
Appendix
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Metadata
Title
Pretreatment 18F-FDG uptake heterogeneity can predict treatment outcome of carbon ion radiotherapy in patients with locally recurrent nasopharyngeal carcinoma
Authors
Guang Ma
Bingxin Gu
Jiyi Hu
Lin Kong
Jiangang Zhang
Zili Li
Yangbo Xue
Jiade Lu
Junning Cao
Jingyi Cheng
Yingjian Zhang
Shaoli Song
Zhongyi Yang
Publication date
01-07-2021
Publisher
Springer Singapore
Keyword
Radiotherapy
Published in
Annals of Nuclear Medicine / Issue 7/2021
Print ISSN: 0914-7187
Electronic ISSN: 1864-6433
DOI
https://doi.org/10.1007/s12149-021-01621-8

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