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Related Experiment Videos

A refined method for creating saccular aneurysms in the rabbit.

Timo Krings1, Walter Möller-Hartmann, Franz-Josef Hans

  • 1Department of Neuroradiology, University Hospital of the University of Technology Aachen, Pauwelsstrase 30, 52057, Aachen, Germany. tkrings@izkf.rwth-aachen.de

Neuroradiology
|May 30, 2003
PubMed
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Researchers developed a new rabbit model for intracranial aneurysms. This model uses elastase to create aneurysms, aiding the testing of endovascular devices for neurosurgical procedures.

Area of Science:

  • Vascular Surgery
  • Interventional Neuroradiology
  • Animal Models

Background:

  • Intracranial aneurysms pose significant health risks.
  • Developing effective endovascular devices requires reliable testing models.
  • Current animal models may not fully replicate human aneurysm characteristics.

Purpose of the Study:

  • To present a refined animal model for creating human intracerebral aneurysms.
  • To evaluate the suitability of this model for testing endovascular devices.
  • To establish a reproducible method for aneurysm induction in rabbits.

Main Methods:

  • Saccular aneurysms were created in 15 rabbits' common carotid arteries (CCA) using elastase.
  • Aneurysm induction involved distal ligation and proximal balloon occlusion of the CCA.

Related Experiment Videos

  • Contrast-enhanced Magnetic Resonance Angiography (CE-MRA) and digital subtraction angiography were used for imaging.

    • Main Results:

    • Aneurysms formed in all 15 rabbits, with sizes ranging from 1.0 to 9.9 mm.
    • CE-MRA effectively visualized aneurysm size, morphology, and neck anatomy.
    • Histological evaluation confirmed loss of the internal elastic lamina, indicative of aneurysm formation.

    Conclusions:

    • The described method provides an easy, reliable, and reproducible way to create aneurysms in rabbits.
    • This animal model is suitable for testing new endovascular devices for intracranial aneurysm embolization.
    • The model mimics key features of human aneurysms in an area of high shear stress.