Figure 1.

¹⁸F-FDG images (top) showing sagittal, coronal, and transaxial slices through the tumor of a mouse (maintained at 37°C) breathing air and a different mouse breathing carbogen. Both color scales set to the same maximum nCi/cc/injected-dose. Bottom: time activity curve obtained from the VOIs drawn around the entire tumor for a tumor-bearing animal breathing air (animals breathing carbogen also resulted in similar curves, flat at late times).