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Computer-assisted intraaneurysmal thrombus visualization.

Mustafa Efkan Colpan1, Zeki Sekerci, Baki Hekimoglu

  • 1Department of Neurosurgery, SSK Ankara Education and Research Hospital, Ankara, Turkey. colpan@iit.edu

Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging
|February 18, 2006
PubMed
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Improved visualization of intraaneurysmal thrombi was achieved using computerized MR and CT image reconstruction. These methods significantly outperformed digital subtraction angiography (DSA) in detecting thrombi, aiding aneurysm assessment.

Area of Science:

  • Medical Imaging
  • Radiology
  • Neurosurgery

Background:

  • Intraaneurysmal thrombi impact aneurysm clinical course and treatment.
  • Digital subtraction angiography (DSA) visualizes hemodynamics but has limitations in thrombus detection.
  • Computerized tomography (CT) and magnetic resonance (MR) imaging offer soft tissue visualization advantages.

Purpose of the Study:

  • To investigate the reconstruction of MR and CT images for intraaneurysmal thrombi assessment.
  • To compare the efficacy of MR and CT imaging reconstruction with DSA in visualizing intraaneurysmal thrombi.

Main Methods:

  • Thirty-one patients with 34 aneurysms underwent DSA.
  • Sixteen patients had MR imaging; 15 had CT imaging.
  • MR and CT images were reconstructed and superimposed with DSA for 3-D visualization of thrombi.

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Main Results:

  • MR and CT image reconstruction clearly visualized intraaneurysmal thrombi in 26.4% of aneurysms, compared to 11.7% with DSA alone.
  • Significant differences in thrombus visualization were noted between DSA alone and DSA with MRA or CTA (P = .02, P = .04).
  • Aneurysm and thrombus volumes were highly correlated (r = 0.987; P < .001).

Conclusions:

  • Computerized MR and CT image reconstruction effectively visualized intraaneurysmal thrombi.
  • MR and CT imaging are superior to DSA alone for demonstrating intra-aneurysmal thrombi.
  • 3-D visualization aids in understanding thrombus shape and volume for improved aneurysm assessment and treatment.