Table 2.

P-values comparing TBR and CNR for different fluorescent contrast agents in U87-GFP tumors.

TBR Comparison	40 min	90 min
TMR-PEG1k vs. IRDye800CW	<0.0001****	---
TMR-PEG1k vs. ICG	---	0.0005***
CNR Comparison	40 min	90 min
TMR-PEG1k vs. IRDye800CW	<0.0001****	---
TMR-PEG1k vs. ICG	---	<0.0001****

Note: ^****p ≤ 0.0001, ^***p ≤ 0.001, ^**p ≤ 0.01, ^*p ≤ 0.05, ^nsp ≥ 0.05.