There are multiple definitions:

1. collateral flow index(English)

   • defined as (Pw-RA) / (Pa-RA), where Pw, RA, and Pa are coronary wedge, right atrial and aortic pressure respectively
   • CFR, IMR, IS, MVO, PCI, PICSO, PPCI, RRR, STEMI
   • Coronary circulation, Ratio-based metric
   • https://doi.org….1002/ccd.29793

2. color flow imaging(English)

   • suitable non-invasive diagnostic method for diagnosing e.g. left ventricular pseudoaneurysm
   • TTE
   • Doppler technique, Echography/ultrasound
   • https://doi.org…530/ERP-17-0035

3. comparative fit index(English)

   • HQ, MASH, TLI, AGFI, CFA, CFI, CVR, DBI, EFA, GFI, NFI, NNFI, TTM, SEM, SRMR
   • Statistics
   • https://doi.org…155/2015/290425
   • https://doi.org…2889-017-4425-2
   • https://doi.org…877-021-02291-x

4. comprehensive facial injury(English)

   • may refer to motorcycle-related craniofacial trauma
   • IBN, AIS, IIS
   • Injury, Scoring systems/scales, Post-traumatic state
   • https://doi.org…/ams.ams_203_21