gms | German Medical Science

70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)
Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

12.05. - 15.05.2019, Würzburg

Rupture risk assessment based on clinical, morphological and hemodynamic parameters in patients with multiple aneurysms

Evaluation des Rupturrisikos intrakranieller Aneurysmen auf Grundlage von klinischen, morphologischen und hämodynamischen Parametern bei Patienten mit multiplen Aneurysmen

Meeting Abstract

  • presenting/speaker Vanessa M. Swiatek - Klinikum Nordstadt Hannover, Klinik für Neurochirurgie, Hannover, Deutschland
  • Belal Neyazi - Klinikum Nordstadt Hannover, Klinik für Neurochirurgie, Hannover, Deutschland
  • Sylvia Saalfeld - Otto-von-Guericke-Universität Magdeburg, Institut für Simulation und Graphik, Magdeburg, Deutschland; Forschungscampus STIMULATE, Magdeburg, Deutschland
  • Philipp Berg - Otto-von-Guericke-Universität Magdeburg, Institut für Strömungstechnik und Thermodynamik, Magdeburg, Deutschland; Forschungscampus STIMULATE, Magdeburg, Deutschland
  • Oliver Beuing - Universitätsklinikum Magdeburg, Universitätsklinik für Neuroradiologie, Magdeburg, Deutschland; Forschungscampus STIMULATE, Magdeburg, Deutschland
  • Samuel Voß - Otto-von-Guericke-Universität Magdeburg, Institut für Strömungstechnik und Thermodynamik, Magdeburg, Deutschland; Forschungscampus STIMULATE, Magdeburg, Deutschland
  • Klaus-Peter Stein - Klinikum Nordstadt Hannover, Klinik für Neurochirurgie, Hannover, Deutschland
  • Homajoun Maslehaty - Klinikum Nordstadt Hannover, Klinik für Neurochirurgie, Hannover, Deutschland
  • Martin Skalej - Universitätsklinikum Magdeburg, Universitätsklinik für Neuroradiologie, Magdeburg, Deutschland; Forschungscampus STIMULATE, Magdeburg, Deutschland
  • I. Erol Sandalcioglu - Klinikum Nordstadt Hannover, Klinik für Neurochirurgie, Hannover, Deutschland

Deutsche Gesellschaft für Neurochirurgie. 70. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Skandinavischen Gesellschaft für Neurochirurgie. Würzburg, 12.-15.05.2019. Düsseldorf: German Medical Science GMS Publishing House; 2019. DocP134

doi: 10.3205/19dgnc470, urn:nbn:de:0183-19dgnc4704

Veröffentlicht: 8. Mai 2019

© 2019 Swiatek et al.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). Lizenz-Angaben siehe http://creativecommons.org/licenses/by/4.0/.


Gliederung

Text

Objective: Numerous studies addressed the risk of rupture in intracranial aneurysms (IAs). However, only isolated aspects have been illuminated. Here, we analyse the rupture risk of IAs according to patient and aneurysm characteristics by comparing ruptured (RIA) and unruptured aneurysms (UIA) in patients harbouring multiple aneurysms.

Methods: Twenty-eight patients harbouring 61 IAs were enrolled in this study. All patients had multiple IAs of which at least one was ruptured. We used this self-controlled model to exclude potential interference from all demographic and micro environmental aspects. Based on rotational angiography we performed a 3D semiautomatic aneurysm neck curve reconstruction for the automatic extraction of morphological parameters as for example Aspect Ratio (AR), Undulation index (UI) and Non-sphericity index (NSI). To assess the rupture risk based on hemodynamic parameters, highly resolved blood flow simulations using computational fluid dynamics were carried out. In this regard, flow (inflow concentration index, ICI) as well as shear (e.g., cycle-averaged wall shear stress, AWSS; low shear area, LSA) parameters were analysed. Furthermore, a modified PHASES score was used to determine its sensitivity and specificity on RIA.

Results: Morphological comparison between RIA and UIA showed for AR: >1 for RIA and <1 respectively. In contrast to previous studies, UI showed no difference. NSI was significantly higher in RIA compared to UIA. Hemodynamic analysis showed a statistically significant almost 1.5 times higher ICI mean in RIA and further a more the fourfold larger LSA in RIA compared to UIA. The detection of RIA using a modified PHASES score showed a sensitivity of 61%, while the detection of UIA showed a specificity of 52%.

Conclusion: The combination of clinical, morphological and hemodynamic parameters constitute a promising approach for rupture risk assessment in intracranial aneurysm.