Fig. 1From: Has “respiratory coaching” before deep inspiration an impact on the incidence of transient contrast interruption during pulmonary CT angiography? Transverse CT pulmonary angiogram at the level of the right pulmonary artery showing grade 1 transient interruption of contrast (TIC) in an 81-year-old woman. Pulmonary arteries (arrow) measure 72 HU, while the aorta (asterisk) is properly enhanced and contrast is still present in superior vena cava (arrowhead)Back to article page