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Related Experiment Videos

Gadolinium-enhanced computed tomographic angiography: current status.

Alex Rosioreanu1, Ronald A Alberico, Alan Litwin

  • 1Department of Radiology, Winthrop-University Hospital, Mineola, NY 11501, USA.

Current Problems in Diagnostic Radiology
|November 5, 2005
PubMed
Summary
This summary is machine-generated.

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Gadolinium-enhanced computed tomographic angiography (gCTA) offers a noninvasive vascular imaging option for patients with contraindications to standard contrast agents. While more expensive and with some limitations, gCTA is a valuable problem-solving tool in select cases.

Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Iodinated contrast media and magnetic resonance imaging (MRI) are standard for computed tomographic angiography (CTA).
  • Some patients have contraindications to both iodinated contrast and MRI, limiting noninvasive vascular imaging options.

Purpose of the Study:

  • To review current research and clinical experience with gadolinium-enhanced computed tomographic angiography (gCTA).
  • To evaluate the utility of gCTA as an alternative noninvasive vascular imaging modality.

Main Methods:

  • Review of existing research on gCTA.
  • Analysis of clinical experience from two institutions using gCTA.
  • Consideration of advancements in CT technology (16-64 detector CT) and bolus tracking.

Main Results:

Related Experiment Videos

  • gCTA is a potential alternative for patients unable to receive iodinated contrast or undergo MRI.
  • gCTA is more costly than iodinated CTA due to gadolinium dosage.
  • Limitations include suboptimal parenchymal enhancement at lower gadolinium doses (≤0.5 mmol/kg).
  • gCTA has proven useful for problem-solving in carefully selected patients.

Conclusions:

  • Gadolinium-enhanced computed tomographic angiography (gCTA) serves as a niche, noninvasive vascular imaging technique.
  • Advancements in CT technology may allow safe administration of gadolinium doses for diagnostic CTA.
  • gCTA is a valuable tool for specific patient populations with contraindications to conventional contrast agents.