Figure 21
The result of coronary artery registration to locate 3D stenosis point on the CTA. (a) Segmented LAD from angiogram I A with candidate control points in 2D plane (u', v'). (b) Segmented LAD from CTA with candidate control points, projected on 2D plane (u, v). (c) Marked stenosis position in the angiogram. (d) Registration result using the proposed method for both modalities shown on plane I R . (e) Stenosis position estimated in the registration plane I R on coronary artery from CTA. (f) 3D position of stenosis in the original coordinate system (x, y, z).