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Uptake of ¹⁸F-Fluorocholine, ¹⁸F-FET, and ¹⁸F-FDG in C6 Gliomas and Correlation with ¹³¹I-SIP(L19), a Marker of Angiogenesis

¹ PET Center, Division of Nuclear Medicine, University Hospital Zurich, Zurich, Switzerland; ² Section of Clinical Immunology, University Hospital Zurich, Zurich, Switzerland; ³ Department of Pathology, University Hospital Zurich, Zurich, Switzerland; ⁴ Department of Neurology, University Rostock, Rostock, Germany; ⁵ Department of Applied Biosciences, Swiss Federal Institute of Technology, Zurich, Switzerland; and ⁶ Institute of Pharmacology and Toxicology, University Zurich, Zurich, Switzerland

View larger version (144K): [in this window] [in a new window]   FIGURE 1.  Morphologic characterization of transplanted glioma cells and developing tumor: central necrotic area (hematoxylin/eosin, x60) (A), parenchymal infiltration zone of glioma cells (hematoxylin/eosin, x100) (B), infiltration in Virchow-Robin perivascular space (hematoxylin/eosin, x130) (C), and representative intratumoral microvessels (arrowheads; anti–von-Willebrand factor, x200) (D).

View larger version (29K): [in this window] [in a new window]   FIGURE 2.  (A and B) Dual-tracer autoradiographs of 18F-fluorocholine (FCH) (A) and corresponding 131I-SIP(L19) (B). (C) Pixelwise correlation of each 100th pixel in tumor region of interest and Pearson correlation coefficient.

View larger version (25K): [in this window] [in a new window]   FIGURE 3.  (A and B) Dual-tracer autoradiographs of 18F-FET (A) and corresponding 131I-SIP(L19) (B). (C) Pixelwise correlation of each 100th pixel in tumor region of interest and Pearson correlation coefficient.

View larger version (29K): [in this window] [in a new window]   FIGURE 4.  (A and B) Dual-tracer autoradiographs of 18F-FDG (A) and corresponding 131I-SIP(L19) (B). (C) Pixelwise correlation of each 100th pixel in tumor region of interest and the Pearson correlation coefficient.