In vivo PET/CT imaging of a BALB/c mouse at 0–5, 5–10, 25–30 and 55–60 min after intravenous injection of a single 2.9 kBq 68 Ga-smSiP–PEG 5k . Regions of interests (ROIs) were drawn and represented in 55–60 min to delimit the lungs (yellow), the heart (blue) and the liver (red) for better clarity. Scale bar represents standardised uptake value (SUV).
