Related Experiment Video

Updated: Aug 23, 2026

A Magnetic Resonance Imaging-based Computational Protocol for Analysis of Plaque Morphology and Hemodynamics in Patients with Carotid Artery Stenosis
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Published on: August 12, 2025

Gadolinium-enhanced CT angiography of the circle of Willis and neck

John W Henson1, Raul G Nogueira, Diego J Covarrubias

  • 1Division of Neuroradiology, Massachusetts General Hospital, and Harvard Medical School, Boston, MA 02114, USA.

AJNR. American Journal of Neuroradiology
|June 19, 2004
PubMed

Insights

Gadolinium contrast agents offer a safe alternative for CT angiography (CTA) in patients with contraindications to iodinated contrast media. This technique enables effective evaluation of head and neck vascular abnormalities when standard contrast agents cannot be used.

Area of Science:

  • Radiology
  • Medical Imaging
  • Vascular Imaging

Background:

  • Computed Tomography Angiography (CTA) is a standard, noninvasive imaging modality for assessing cervical and intracranial vascular abnormalities.
  • Iodinated contrast agents are typically used in CTA but carry risks and contraindications for certain patient populations.

Observation:

  • This study reports the successful use of gadolinium-based contrast agents for head and neck CTA.
  • Three patients with documented contraindications to iodinated contrast media underwent gadolinium-enhanced CTA.

Findings:

  • Gadolinium contrast provided effective visualization of head and neck vasculature in patients unable to receive iodinated agents.
  • The technique demonstrated the feasibility of using gadolinium for CTA in challenging clinical scenarios.

Implications:

  • Gadolinium-enhanced CTA expands imaging options for patients with contrast allergies or renal compromise.
  • This approach enhances diagnostic capabilities in vascular imaging, improving patient care and safety.

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