Fig 5. 3D luminal cross-section reconstruction.

a) Schematic view of a projection plane ${\mathcal{P}}_{\mathrm{n}}$, correspondence of a 3D centreline point; definition of cross-sectional plane ${\mathcal{S}}_k$. b) 3D reconstruction of a diameter vector d′_k,n; magnification, followed by projection onto the cross-sectional plane ${\mathcal{S}}_k$.