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International Journal of Computer Assisted Radiology and Surgery

Published in:

01-11-2018 | Original Article

Semiautomatic neck curve reconstruction for intracranial aneurysm rupture risk assessment based on morphological parameters

Authors: Sylvia Saalfeld, Philipp Berg, Annika Niemann, Maria Luz, Bernhard Preim, Oliver Beuing

Published in: International Journal of Computer Assisted Radiology and Surgery | Issue 11/2018

Abstract

Purpose

Morphological parameters of intracranial aneurysms (IAs) are well established for rupture risk assessment. However, a manual measurement is error-prone, not reproducible and cumbersome. For an automatic extraction of morphological parameters, a 3D neck curve reconstruction approach to delineate the aneurysm from the parent vessel is required.

Methods

We present a 3D semiautomatic aneurysm neck curve reconstruction for the automatic extraction of morphological parameters which was developed and evaluated with an experienced neuroradiologist. We calculate common parameters from the literature and include two novel angle-based parameters: the characteristic dome point angle and the angle difference of base points.

Results

We applied our method to 100 IAs acquired with rotational angiography in clinical routine. For validation, we compared our approach to manual segmentations yielding highly significant correlations. We analyzed 95 of these datasets regarding rupture state. Statistically significant differences were found in ruptured and unruptured groups for maximum diameter, maximum height, aspect ratio and the characteristic dome point angle. These parameters were also found to statistically significantly correlate with each other.

Conclusions

The new 3D neck curve reconstruction provides robust results for all datasets. The reproducibility depends on the vessel tree centerline and the user input for the initial dome point and parameters characterizing the aneurysm neck region. The characteristic dome point angle as a new metric regarding rupture risk assessment can be extracted. It requires less computational effort than the complete neck curve reconstruction.

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Title: Semiautomatic neck curve reconstruction for intracranial aneurysm rupture risk assessment based on morphological parameters
Authors: Sylvia Saalfeld
Philipp Berg
Annika Niemann
Maria Luz
Bernhard Preim
Oliver Beuing
Publication date: 01-11-2018
Publisher: Springer International Publishing
Published in: International Journal of Computer Assisted Radiology and Surgery / Issue 11/2018
Print ISSN: 1861-6410
Electronic ISSN: 1861-6429
DOI: https://doi.org/10.1007/s11548-018-1848-x

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Semiautomatic neck curve reconstruction for intracranial aneurysm rupture risk assessment based on morphological parameters

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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