There are multiple definitions:

1. true-positive fraction(English)

   • FP, FNF, FPF, TNF, TP
   • Statistics

2. time to peak filling(English)

   • refers to temporal heterogeneity of myocardial contraction in patients with myocardial infarction
   • CMR, LGE, MI, PER, PFR, TVC
   • Cardiology, Medical imaging
   • https://doi.org…mri.2009.05.043