Figure 2a. Ruptured aneurysm in a 77-year-old man who presented with acute abdominal pain. Coronal VR image (a) and axial source image (b) show an infrarenal aortic aneurysm with a diameter of 4.5 cm and a right common iliac artery aneurysm with a diameter of 8.5 cm (arrowheads in b), as well as a retroperitoneal hematoma (arrows in b). These findings were diagnostic. Note that the mural thrombus and the remaining lumen are evident, but no active bleeding can be seen.