Figure 7.
Average contrast-to-noise ratios (CNRs) and fold change in CNRs in tumor xenografts after subcutaneous injection of Gd-DO3A or ProGlo. A, Subcutaneous injection of Gd-DO3A demonstrated no significant enhancement in CNR of PR(+) or PR(-) tumors over time. B, Subcutaneous injection of ProGlo showed specific CNR enhancement in the PR(+) tumor over the PR(-) tumor at 6 hours post-injection (asterisk, Student's t-test, p < 0.05). Error bars represent ± standard deviation of the mean. C, Representative images of xenografted mice injected subcutaneously with Gd-DO3A (top panels) or ProGlo (bottom panels). White scale bars represent 5 mm.