In order to examine the human circulatory system using an MRI scan, a contrast agent (usually a salt of the rare earth

In order to examine the human circulatory system using an MRI scan, a contrast agent (usually a salt of the rare earth element gadolinium) is injected into the bloodstream so that the blood vessels are clearly visible. In what sequence will gadolinium be detected in the following vessels if it was injected into the femoral vein?

The femoral vein rises up the limb, passes into the external iliac vein, merges with the internal iliac vein (which is formed from the veins of the pelvic organs), both veins form a paired common iliac vein. Two common iliac veins, joining, pass into the inferior vena cava, which goes to the right atrium. From the right atrium, the blood will pass into the right ventricle, why through the pulmonary trunk and pulmonary arteries it will reach the lungs, enriched with blood, go into the pulmonary veins going to the left atrium, then into the left ventricle and aorta. Three large trunks extend from the aorta: the left brachiocephalic trunk, the left common carotid artery, and the left subclavian artery, which feed the upper half of the body. The descending aorta passes into the abdominal and carries blood to the lower parts of the body.