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Figure 1 Typical dataset as acquired by coronary computed tomography angiography (CTA) after intravenous injection of contrast agent (here: dual-source CT with a temporal resolution of 83 ms). (A) Transaxial image (0.75-mm reconstructed slice thickness) at the level of the proximal left anterior descending coronary artery. Cross sections of the proximal left anterior descending coronary artery (arrow) and left circumflex coronary artery (arrowhead) are visible. (B) Transaxial image at the level of the right coronary artery ostium. Smaller arrow: right coronary artery; larger arrow: left anterior descending coronary artery; arrowhead: left circumflex coronary artery. (C) Transaxial image at the midventricular level. Smaller arrow: right coronary artery; larger arrow: left anterior descending coronary artery; arrowhead: left circumflex coronary artery. (D) Maximum intensity projections (here: 5-mm thickness in axial orientation) can be used to visualize longer segments of the coronary arteries and the relationship of main and side branches. Here, the left main and proximal left anterior descending (arrow) as well as left circumflex coronary artery (arrowhead) are displayed. (E) Another maximum intensity projection (8-mm thickness) in a double-oblique plane that parallels the right interventricular groove is used to display the entire course of the right coronary artery (arrows). (F) Curved multiplanar reconstruction (0.75-mm thickness) was used to visualize the right coronary artery (arrows). (G) Three-dimensional display of the heart and coronary arteries. Smaller arrow: right coronary artery; larger arrow: left anterior descending coronary artery; arrowhead: left circumflex coronary artery.
