How does magnetisation transfer (MT) benefit MRA imaging?

Magnetisation transfer (MT) imaging is a technique that enhances the visibility of certain tissues and structures in magnetic resonance imaging (MRI), particularly in magnetic resonance angiography (MRA). The correct choice highlights how MT benefits MRA by suppressing signals from tissues with high protein content, such as muscles and adjacent non-vascular structures. This suppression allows for a clearer distinction of blood vessels, as it reduces the unwanted background signals that could obscure the details of the vascular anatomy.

By targeting the interactions between free water and macromolecules, MT can enhance the contrast of fluids, such as blood, against the surrounding tissues, improving the visualization of blood vessels in MRA studies. This results in enhanced diagnostic capability as clinicians can better assess vessel patency and anatomy without interference from surrounding tissues that could mimic vascular signals.