Fetal Umbilical Geometry

Real digitized cord sheath & placenta, the umbilical vein (UV) centreline recovered from the original CMISS 1D source mesh, and a synthetic umbilical artery (UA) pair generated from it. Companion data/code for the manuscript "A Gestational-Age-Continuous Digital Twin of the Fetal Umbilical Circulation." → View simulated pressure/flow over a cardiac cycle

Layers

Cord sheath (real)

Placenta (real)

UV centreline (real)

UA #1 (synthetic)

UA #2 (synthetic)

Gestational age

34 wk

Coiling (pitch)

50 mm/turn

0.20 spirals/cm

UV diameter

4.32 mm

UA diameter

4.72 mm

Explore the geometry: drag the gestational age slider to see the vein, arteries, and cord grow according to literature-anchored growth curves. Drag coiling to see how tightly the arteries wind around the vein — from a straightened cord to a hypercoiled one — while staying inside the real digitized cord boundary throughout.