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Related Experiment Videos

Perfusion MRI in CNS disease: current concepts.

M Essig1, F Giesel, M Le-Huu

  • 1Department of Radiology, German Cancer Research Center, Heidelberg, Germany. m.essig@dkfz.de

Neuroradiology
|January 13, 2005
PubMed
Summary

Cerebral perfusion MRI uses contrast agents to assess brain hemodynamics for conditions like stroke and tumors. MultiHance, a novel agent, enables high-quality perfusion imaging with a single dose, improving diagnostic capabilities.

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Area of Science:

  • Neuroradiology
  • Medical Imaging
  • Pharmacology

Background:

  • Cerebral perfusion MRI is increasingly used for cerebrovascular disease, tumor imaging, and psychiatric disorders.
  • Perfusion MRI relies on gadolinium-based contrast agents to measure cerebral hemodynamics.
  • Contrast agent properties, like bolus sharpness and signal decrease, are critical for study quality.

Purpose of the Study:

  • To review the indications for cerebral perfusion MRI.
  • To evaluate the performance of MultiHance (gadobenate dimeglumine, Gd-BOPTA) in MR perfusion studies.
  • To compare the required dosage of MultiHance with conventional contrast agents.

Main Methods:

  • Review of existing literature on perfusion MRI indications and MultiHance performance.

Related Experiment Videos

  • Analysis of signal changes induced by MultiHance during contrast agent passage.
  • Comparison of image quality and required contrast agent dosage in studies using MultiHance versus other agents.

    • Main Results:

    • MultiHance, a Gd-BOPTA agent, exhibits higher relaxivities due to albumin interaction, leading to a sharper bolus profile.
    • Previous perfusion MRI studies often required a double dose of contrast agent for adequate signal drop.
    • Recent studies indicate MultiHance allows high-quality cerebral blood volume (rCBV) and cerebral blood flow (rCBF) map calculation with a single dose, achieving a ~30% signal drop.

    Conclusions:

    • MultiHance offers improved performance in cerebral perfusion MRI compared to conventional agents.
    • A single dose of MultiHance is sufficient for high-quality perfusion imaging, potentially reducing contrast agent administration.
    • This advancement enhances the utility of perfusion MRI for various neurological and psychiatric conditions.