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Fig. 3 | Radiation Oncology

Fig. 3

From: Local relapse of nasopharyngeal cancer and Voxel-based analysis of FMISO uptake using PET with semiconductor detectors

Fig. 3

Representative cases. CT (a), contrast-enhanced MRI (b), FDG-PET (c) and FMISO-PET (d) were performed before radiation therapy. The CT showed nasopharyngeal mucosal disease and invasion to the clivus (yellow line). The high-uptake area of FMISO was distinguished at the central part of mucosal region and slightly to the right side of the clivus (cyan arrow). Five months after chemoradiation, this patient experienced local relapse. Contrast-enhanced MRI (e) and FDG-PET (f) showed recurrent tumor (red line). The relapse site was central to the nasopharyngeal mucosa and clivus and of a similar position with the pretreatment FMISO uptake area. Abbreviations: CT, computed tomography; FDG-PET, 18F- fluorodeoxyglucose positron emission tomography; FMISO-PET, 18F–fluoromisonidazole positron emission tomography

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Radiation Oncology

ISSN: 1748-717X

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