Measurement of Uterine Cavity Shape of Adult Female on Coronal Section
by Three-dimensional Ultrasound
Abstract
Objective: To describe the measurement of uterine cavity shape on
coronal section by three-dimensional ultrasound in Chinese adult female
population. Methods: A cross-sectional observational study including 172
adult females with normal uterine cavity was performed and all
participants underwent transvaginal two-dimensional and
three-dimensional ultrasonography. Seven measurements (uterine cavity
width, uterine cavity length, internal os width, lateral indentation
depth, lateral indentation angle, cornual angle, uterine cavity area )
were determined and evaluated on coronal plane of uterus. Results: The
mean age of the participants included was 29.8±5.4 years. 95% reference
range of uterine cavity length, uterine cavity width, internal os width,
cornual angle, lateral indentation angle and lateral indentation depth
were estimated as 26-38 mm, 25-40 mm, 4-11mm, 39-88°, 131-171° and
0.8-6.4 mm, respectively. The mean uterine cavity area was 5.5±1.3 cm²
and the range of 95% reference value was 3.0-8.0 cm2. Conclusion: Our
research showed that a normal uterine cavity in adult women of
childbearing age had lateral indentation depth ≤7mm, lateral indentation
angle ≥130° and cornual angle ≥40°. The width of the uterine cavity
measured on the coronal plane less than 22mm and the uterine cavity area
less than 3cm2 can be considered smaller than normal.