Figure 3.
Methodology developed to fuse computed tomography angiography and intravascular imaging data:71 (A) Extraction of lumen centreline from computed tomography angiography. (B) Cross-sectional computed tomography angiography images are generated perpendicularly to the centreline and anatomical landmarks that are seen in intravascular ultrasound/optical coherence tomography images are detected. After matching the intravascular imaging contours are rotated so as to obtain the correct orientation (middle panel). (C) The orientated intravascular imaging contours are placed perpendicular to the lumen centreline extracted by computed tomography angiography to reconstruct the coronary artery anatomy that is shown in (D).