There are multiple definitions:

1. polycystic kidney [rat](English)

   • PCK-CCL, ARPKD, CCL, NRC, PKD
   • Experimental animal, Model(ing), Kidney and adrenals
   • https://doi.org…binvest.3700448

2. percentage of correct keypoints(English)

   • a metric that measures the percentage of estimated keypoints falling within a certain radius of the ground truth keypoints
   • BCE, DSC, EDF, ESF, FPS, HD, LOA, LP, LVEF, LVESV, MAD, MLP, MTT, PELoA, PLANeT, STP
   • Medical imaging, Signal analysis, Machine learning
   • https://doi.org…517-025-03510-y