Table 1 Criteria for endometrial ultrasound scoring

Endometrial thickness (mm)

< 7 or > 14

7–8

9–14

Endometrial type

C

B

A

Endometrial peristalsis (per min)

Negative wave or other types

Positive < 1 or > 3

Positive 1–3

Endocardial and subendocardial blood flow distribution

III

II

I

EV (cm³)

< 2

2–4

> 4

VFI

Immeasurable

< 0.24

> 0.24