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  2. MRI contrast agent - Wikipedia

    en.wikipedia.org/wiki/MRI_contrast_agent

    MRI contrast agents may be administered by injection into the blood stream or orally, depending on the subject of interest. Oral administration is well suited to gastrointestinal tract scans, while intravascular administration proves more useful for most other scans. MRI contrast agents can be classified [2] by their: Chemical composition

  3. Contrast agent - Wikipedia

    en.wikipedia.org/wiki/Contrast_agent

    A contrast agent (or contrast medium) is a substance used to increase the contrast of structures or fluids within the body in medical imaging. [1] Contrast agents absorb or alter external electromagnetism or ultrasound , which is different from radiopharmaceuticals , which emit radiation themselves.

  4. Category:MRI contrast agents - Wikipedia

    en.wikipedia.org/wiki/Category:MRI_contrast_agents

    Pages in category "MRI contrast agents" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. ...

  5. Magnetic resonance imaging - Wikipedia

    en.wikipedia.org/wiki/Magnetic_resonance_imaging

    Extracellular contrast agents are used widely in liver MRI, and newer hepatobiliary contrast agents also provide the opportunity to perform functional biliary imaging. Anatomical imaging of the bile ducts is achieved by using a heavily T2-weighted sequence in magnetic resonance cholangiopancreatography (MRCP).

  6. Enzyme-activated MR contrast agents - Wikipedia

    en.wikipedia.org/wiki/Enzyme-activated_MR...

    Enzyme-activated MR contrast agents are compounds that cause a detectable change in image intensity when in the presence of the active form of a certain enzyme. This makes them useful for in vivo assays of enzyme activity. They are distinguished from current, clinical MR contrast agents that give only anatomical information, [3] such as aqueous ...

  7. Radiocontrast agent - Wikipedia

    en.wikipedia.org/wiki/Radiocontrast_agent

    The contrast agents absorb external X-rays, resulting in decreased exposure on the X-ray detector. This is different from radiopharmaceuticals used in nuclear medicine which emit radiation. Magnetic resonance imaging (MRI) functions through different principles and thus MRI contrast agents have a different mode of action. These compounds work ...

  8. Gadopiclenol - Wikipedia

    en.wikipedia.org/wiki/Gadopiclenol

    Gadopiclenol, sold under the brand name Elucirem among others, is a contrast agent used with magnetic resonance imaging (MRI) to detect and visualize lesions with abnormal vascularity in the central nervous system and in the body. [2] [7] Gadopiclenol is a paramagnetic macrocyclic non-ionic complex of gadolinium. [2]

  9. Blood pool agent - Wikipedia

    en.wikipedia.org/wiki/Blood_pool_agent

    [1] [2] Blood pool agents (also known as intravascular contrast agents) are differentiated from other contrast agents due to their high molecular weight and higher relaxivities. [3] 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 ...