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Related Experiment Videos

Latest techniques in head and neck CT angiography.

B Schuknecht1

  • 1Institute of Neuroradiology, University Hospital of Zurich, Klinik Bethanien, Toblerstr 51, 8044 Zürich, Switzerland. image-solution@ggaweb.ch

Neuroradiology
|January 13, 2005
PubMed
Summary

CT angiography offers detailed, non-invasive imaging of head and neck vessels. Advances in multi-detector CT scanners enable high-resolution imaging with reduced contrast, making it ideal for stroke and steno-occlusive disease assessment.

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Area of Science:

  • Medical Imaging
  • Radiology
  • Vascular Imaging

Background:

  • Multi-row CT scanner evolution enhances CT angiography (CTA) for vascular assessment.
  • Reduced contrast volume and extended non-invasive examinations are now feasible.

Purpose of the Study:

  • To evaluate CT angiography as a viable imaging modality for supraaortic and intracranial vessels.
  • To highlight the advantages of CTA over digital subtraction angiography (DSA) and magnetic resonance angiography (MRA).

Main Methods:

  • Utilizing 16 and 64-row MDCT scanners.
  • Administering low contrast volume with high contrast density (400 mg I/ml) contrast media.
  • Optimizing flow rate (4 ml/s) and employing saline flushing for data acquisition.

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Main Results:

  • High-resolution CTA provides superior detail of head and neck vessels.
  • CTA effectively delineates vessel calcification and assesses steno-occlusive disease, aneurysms, and dissections.
  • CTA is a valuable tool for identifying plaque, stenosis, and residual lumen in various vascular conditions.

Conclusions:

  • CT angiography is a preferred modality for acute stroke and chronic steno-occlusive disease.
  • CTA offers non-invasive assessment with advantages over DSA and MRA, particularly for detailed vascular anatomy and pathology.
  • Advanced CTA techniques are suitable for evaluating aneurysms and complex vascular lesions, with DSA reserved for endovascular treatments.