<unk> s (BPAs) are a class of magnetic resonance angiography contrast<unk> s.<unk> s (also known as intravascular contrast<unk> s) are differentiated from other contrast<unk> s due to their high molecular weight and higher relaxivities. Their large size prevents diffusion through the vascular epithelium and leakage into the interstitial space, and because of this they stay in the vascular system for a longer time period. Most contrast<unk> s, leave the vascular system within a few minutes, however<unk> s remain in the circulation for up to an hour, extending the window available for imaging. Longer image acquisition times allow better signal-to-noise ratio and improved image resolution.
Blood pool agent
Blood substitute
Radiocontrast agent
Transfusion medicine
Hemodialysis product
Immunoconjugate
Antihypotensive agent
Immunosuppressive drug