Table 1. Selected E-Cervix parameters.

Measurement parameter	Description
IOS strain mean level	Standardized strain mean level in 1 cm circle of IOS, value range: 0 (hard)–1 (soft)
EOS strain mean level	Standardized strain mean level in 1 cm circle of EOS, value range: 0 (hard)–1 (soft)
Ratio (IOS/EOS)	IOS strain level/EOS strain level
Strain mean level within 0.5/1.0/1.5 cm from the cervical canal	Strain mean level within 0.5/1.0/1.5 cm area from the cervical canal in ROI, value range: 0 (hard)–1 (soft)
ECI within 0.5/1.0/1.5 cm from the cervical canal	ECI score within 0.5/1.0/1.5 cm area from the cervical canal in ROI, value range: 0 (homogeneity)–81 (heterogeneity)
Hardness ratio within 0.5/1.0/1.5 cm from the cervical canal	30-Percentile hardness area ratio within 0.5/1.0/1.5 cm from the cervical canal in ROI, value range: 0% (soft)–100% (hard)

IOS = internal os of cervix, EOS = external os of cervix, ROI = region of interest, ECI = elasticity contrast index.