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BioMed Research International
Volume 2015 (2015), Article ID 582614, 7 pages
Clinical Study

Prognostic Value of 18F-FDG PET-CT in Nasopharyngeal Carcinoma: Is Dynamic Scanning Helpful?

1Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong
2Department of Diagnostic Radiology and Molecular Imaging, Oakland University William Beaumont School of Medicine, Royal Oak, MI 48073, USA
3Department of Clinical Oncology, Queen Mary Hospital, Hong Kong

Received 3 September 2014; Revised 24 March 2015; Accepted 25 March 2015

Academic Editor: Genichiro Ishii

Copyright © 2015 Bingsheng Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objectives. To evaluate the differences in prognostic values of static and dynamic PET-CT in nasopharyngeal carcinoma (NPC). Material and Methods. Forty-five patients who had static scan were recruited. Sixteen had dynamic scan. The primary lesions were delineated from standardized uptake value (SUV) maps from static scan and maps from dynamic scan. The average follow-up lasted for 34 months. The patients who died or those with recurrence/residual disease were considered “poor outcome”; otherwise they were considered “good outcome.” Fisher’s exact test and ROC analysis were used to evaluate the prognostic value of various factors. Results. Tumor volume thresholded by 40% of maximal SUV () significantly predicted treatment outcome () in the whole cohort. In 16 patients with dynamic scan, all parameters by dynamic scan were insignificant in predicting the outcome. The combination of maximal SUV, maximal , , and (the tumor volume thresholded by 37% maximal ) achieved the highest predicting accuracy for treatment outcome with sensitivity, specificity, and accuracy of 100% in these 16 patients; however this improvement compared to was insignificant. Conclusion. Tumor volume from static scan is useful in NPC prognosis. However, the role of dynamic scanning was not justified in this small cohort.