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Published in: European Journal of Nuclear Medicine and Molecular Imaging 10/2016

01-09-2016 | Original Article

 PET/MRI in pancreatic and periampullary cancer: correlating diffusion-weighted imaging, MR spectroscopy and glucose metabolic activity with clinical stage and prognosis

Authors: Bang-Bin Chen, Yu-Wen Tien, Ming-Chu Chang, Mei-Fang Cheng, Yu-Ting Chang, Chih-Horng Wu, Xin-Jia Chen, Ting-Chun Kuo, Shih-Hung Yang, I-Lun Shih, Hong-Shiee Lai, Tiffany Ting-Fang Shih

Published in: European Journal of Nuclear Medicine and Molecular Imaging | Issue 10/2016

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Abstract

Purpose

To correlate the clinical stage and prognosis of pancreatic or periampullary cancer with the imaging biomarkers on diffusion-weighted imaging, magnetic resonance spectroscopy and glucose metabolic activity derived from integrated PET/MRI.

Methods

This prospective study was approved by the institutional review board and informed consent was obtained. The study group comprised 60 consecutive patients with pancreatic or periampullary cancer who underwent PET/MRI before treatment. The imaging biomarkers were the minimal apparent diffusion coefficient (ADCmin), choline levels, standardized uptake values, metabolic tumour volume (MTV), and total lesion glycolysis (TLG) of the tumours. The relationships between these biomarkers and clinical TNM stage were evaluated using the Pearson test and the Mann-Whitney U test. The area under the receiver operating characteristic curve (AUROC) was used to evaluate accuracy. The correlation between the imaging biomarker and progression-free survival (PFS) was investigated using the Cox proportional hazards model.

Results

ADCmin was significantly lower in N1 and TNM stage 3+ tumours. Choline levels significantly higher in T4 tumours. TLG was significantly higher in T4, N1 and TNM stage 3+ tumours. MTV was significantly higher in T4, N1, M1, and TNM stage 3+ tumours (all P < 0.05). The MTV/ADCmin ratio exhibited the highest AUROC for predicting T4, N1, M1, and advanced TNM stages tumours, and was an independent predictor of PFS (P = 0.018) after adjustment for age, sex, tumour size and stage.

Conclusion

The imaging biomarkers from integrated PET/MRI may predict clinical stage and PFS in patients with pancreatic or periampullary cancer.
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Metadata
Title
 PET/MRI in pancreatic and periampullary cancer: correlating diffusion-weighted imaging, MR spectroscopy and glucose metabolic activity with clinical stage and prognosis
Authors
Bang-Bin Chen
Yu-Wen Tien
Ming-Chu Chang
Mei-Fang Cheng
Yu-Ting Chang
Chih-Horng Wu
Xin-Jia Chen
Ting-Chun Kuo
Shih-Hung Yang
I-Lun Shih
Hong-Shiee Lai
Tiffany Ting-Fang Shih
Publication date
01-09-2016
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Nuclear Medicine and Molecular Imaging / Issue 10/2016
Print ISSN: 1619-7070
Electronic ISSN: 1619-7089
DOI
https://doi.org/10.1007/s00259-016-3356-y

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