Journal: Journal of Nuclear Medicine
Article Title: Collagen Hybridizing Peptide–Based Radiotracers for Molecular Imaging of Collagen Turnover in Pulmonary Fibrosis
doi: 10.2967/jnumed.124.268832
Figure Lengend Snippet: In vivo 99m Tc-(HE) 3 -(GPO) 9 SPECT/CT imaging. (A and B) Illustrative examples of CE-CT (top) and fused 99m Tc-(HE) 3 -(GPO) 9 SPECT/CT (bottom) images of control (A) and bleomycin-treated (B) mice 3 wk after induction, acquired starting 1 h after tracer injection. (C) Quantification of 99m Tc-(HE) 3 -(GPO) 9 lung uptake by SPECT/CT in control and bleomycin-treated groups. ** P < 0.01, based on Mann–Whitney U test. (D) Ex vivo quantification of 99m Tc-(HE) 3 -(GPO) 9 lung uptake by γ-well counting in control and bleomycin-treated groups 2 h after tracer injection. ** P < 0.01, based on Mann–Whitney U test. (E) Correlation between in vivo SPECT/CT and ex vivo γ-well counting evaluation of 99m Tc-(HE) 3 -(GPO) 9 lung uptake (Spearman r = 0.83). *** P < 0.001, based on 2-tailed test. Inset box shows correlation after excluding outlier (Spearman r = 0.79). ** P < 0.01.
Article Snippet: Animals were imaged 1 h after tracer injection on a small-animal–dedicated SPECT/CT scanner (U-SPECT 4 CT; MILabs), as described previously with minor modification.
Techniques: In Vivo, Single Photon Emission Computed Tomography, Imaging, Control, Injection, MANN-WHITNEY, Ex Vivo