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Fig. 2 | Radiation Oncology

Fig. 2

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

Fig. 2

Voxel-based image analysis procedures. Abbreviations: CT, computed tomography; RT, radiation therapy; CT pri , CT before radiation therapy; FMISO-PET, 18F–fluoromisonidazole positron emission tomography; CT rec , CT at local recurrence; ROI pri , region of interest designated primary tumor; ROI rec , region of interest designated recurrent tumor; Data pri , the data files derived from the ROIpri; Data rec , the data files derived from the ROIrec; VOX ovl , overlap voxels; VOX non-ovl , non-overlap voxels

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