Question

Magnetic resonance angiography (MRA) is a technique that can resolve defects like stenotic (narrowed) arteries. A contrast agent like gadolinium or manganese injected into the blood stream interacts with the strong magnetic fields of the MRI device to produce such images. Based on their orbital configurations, are these contrast agents paramagnetic or diamagnetic?

Answer 1

Magnetic resonance angiography (MRA) uses paramagnetic contrast agents to enhance the contrast in MRI images.

Step-by-step explanation:

The contrast agents used in magnetic resonance angiography (MRA) are paramagnetic. They interact with the strong magnetic fields of the MRI device to produce images by altering the magnetic properties of water in cells. Paramagnetic substances are attracted to magnetic fields and can enhance the contrast in MRI images, making it easier to detect defects like stenotic arteries.