Figure 3.

A 53-year-old woman with invasive thymoma with extensive intraluminal tumor thrombus. HU densities measured on the right atrial thrombus are, 36 on non-contrast-enhanced CT image, 66 on contrast-enhanced CT images in the arterial phase, and 69 on contrast-enhanced CT images in the four minutes delayed phase. HU densities are similar with the primary mass and compatible with significant enhancement. Note all ROIs are placed on eccentric non-necrotic part of the thrombus. (Protocol: 64 detector scanner, 180 mAs, 120 kV, slice thickness: 5 mm, Contrast material: 60 ml Iohexol.) ( Early phase images acquired 25 seconds after contrast administration and late phase images acquired 70 seconds after contrast administration.)