Aortic annulus S-curve

TAVR planningPSUPSU Cardiology

Drag the plot, drag the 3D view, or use the sliders. The eye in the short-axis view shows where the C-arm is sitting relative to the annulus.

Aortic annulus S-curve

drag anywhere
RAOLAOCRANCAUD-75-75-60-60-45-45-30-30-15-15+15+15+30+30+45+45+60+60+75+75L-N cusp overlap (LAO 83°, CRAN 21°)R-L cusp overlap (RAO 31°, CAUD 26°)3-cusp coplanar (NCC posterior) (LAO 54°, CRAN 9°)3-RCC3-cusp coplanar (RCC anterior) (LAO 0°, CAUD 18°)R-N cusp overlap (LAO 28°, CAUD 5°)3-cusp coplanar (LCC posterior) (RAO 65°, CAUD 28°)
Loading 3D view…
Loading…
Closest canonical view
3-cusp coplanar (RCC anterior)
LAO 0° · CAUD 18° · ★ most frequently used

Navigate along the S-curve

Drag to slide along the curve (cranial/caudal follows automatically) or click a canonical-view chip to jump.

0°
18° CAUD on curve
off curve — drag to lock on

C-arm angle

RAO ↔ LAO0°
RAO0LAO
CRAN0CAUD
0°

Annulus alignment

Tilt the aortic root within the patient frame. The C-arm angles stay fixed — only the anatomy rotates.

Pitch
Front/back tilt
18° ANT
Roll
Right/left tilt
22° R
Yaw
Cusp rotation
0°