There are multiple definitions:

1. Hounsfield unit(English)

   • a quantitative scale for describing radiodensity
   • CAD, CT, CTC, STP, LAP
   • Medical imaging, Scoring systems/scales
   • https://en.wiki…ounsfield_scale
   • https://doi.org…acc.2021.06.019

2. hindlimb unloading(English)

   • AMPK, HDAC4, mRNA, MyHC
   • Myocyte / muscle
   • https://doi.org…3390/ph14111167

3. hyperuricemia(English)

   • HFrEF, AF, MCHC
   • Cardiology, Pathology, Gender aspects, Risk factor, Prognosis
   • https://doi.org…47/ijgm.s536026