gms | German Medical Science

62nd Annual Meeting of the German Society of Neurosurgery (DGNC)
Joint Meeting with the Polish Society of Neurosurgeons (PNCH)

German Society of Neurosurgery (DGNC)

7 - 11 May 2011, Hamburg

The role of dual-source CT-angiography for postoperative control of clipped intracerebral aneurysms

Meeting Abstract

  • N. Oezkan - Department of Neurosurgery, University Hospital Essen, Germany
  • D.M. Fahrendorf - Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany; Institute of Clinical Radiology, University Hospital Muenster, Germany
  • S.L. Goericke - Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany
  • U. Sure - Department of Neurosurgery, University Hospital Essen, Germany
  • M. Forsting - Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany
  • E.R. Gizewski - Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Germany; Institute of Neuroradiology, University Hospital Giessen, Germany

Deutsche Gesellschaft für Neurochirurgie. Polnische Gesellschaft für Neurochirurgen. 62. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgen (PNCH). Hamburg, 07.-11.05.2011. Düsseldorf: German Medical Science GMS Publishing House; 2011. DocP 012

DOI: 10.3205/11dgnc233, URN: urn:nbn:de:0183-11dgnc2335

Published: April 28, 2011

© 2011 Oezkan et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.


Outline

Text

Objective: Comparison of image quality in dual source CT-angiography (CTA) versus CT-angiography (CTA) in a 16-row-scanner with conventional angiography (DSA) in postoperative control after neurosurgical clipping.

Methods: 30 aneurysms from 25 patients were included after neurosurgical clipping: 18 aneurysms after dual source CTA and 12 aneurysms after evaluation by a 16-row-scanner. The images were processed using 3D volume rendering technique (VRT) and bone removal. The results were compared to DSA images as the gold standard for comparative judgement. All patients underwent a postoperative DSA control. The CTA images were evaluated with regard to clip artefacts, visibility of the parent vessels and a potential neck remnant of clipped aneurysm. Furthermore, intraoperative pictures were correlated with the CTA imaging results.

Results: There were significantly fewer artefacts surrounding the aneurysm clips in dual- source CTA when compared to a CTA in a 16-row-scanner. Furthermore, the dual source CTA images resembled the actual postoperative DSA images as well the intraoperative situation more reliable. In our series, DSA still offered the best imaging information and highest resolution on potential neck remnants.

Conclusions: DSA is still the gold standard in the evaluation of potential neck remnants of intracerebral aneurysms. However, dual source CTA could be an alternative in cases with known remnant necks since it might help to reduce the frequency of follow-up DSAs.