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Vertebrobasilar dolichoectasia: evaluation with CT angiography

P T Vieco1, E E Maurin, C E Gross

  • 1Department of Radiology, University of Vermont College of Medicine, Burlington 05401, USA.

AJNR. American Journal of Neuroradiology
|August 1, 1997
PubMed
Summary

Vertebrobasilar dolichoectasia, a condition of widened and elongated arteries, was diagnosed in three patients using CT angiography. This imaging technique effectively identified associated thrombi and basilar artery dissection, aiding in patient management.

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Area of Science:

  • Neurology
  • Vascular Imaging
  • Radiology

Background:

  • Vertebrobasilar dolichoectasia (VBD) involves abnormal widening and elongation of the vertebrobasilar arteries.
  • VBD can lead to serious neurological complications.
  • Accurate diagnosis and monitoring are crucial for managing VBD.

Purpose of the Study:

  • To present cases of VBD diagnosed via CT angiography.
  • To evaluate the utility of CT angiography in diagnosing VBD and associated complications.
  • To highlight the role of specific CT angiography imaging techniques.

Main Methods:

  • Computed tomography angiography (CTA) was used for diagnosis in three patients with VBD.
  • Shaded surface display (SSD) images were utilized to visualize arterial anatomy.

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  • Source and curved-reformatted images were employed to detect thrombi and dissection.

    • Main Results:

    • CT angiography successfully diagnosed vertebrobasilar dolichoectasia in all three patients.
    • Two patients presented with intra-arterial thrombi, diagnosed using source and curved-reformatted CTA images.
    • One patient had a basilar artery dissection, also identified by CTA.

    Conclusions:

    • CT angiography is an effective minimally invasive tool for diagnosing vertebrobasilar dolichoectasia.
    • Specific CTA imaging techniques, including SSD and curved reformats, aid in identifying associated pathologies like thrombi and dissection.
    • CTA facilitates the diagnosis and follow-up management of patients with VBD.