J Neurol Surg A Cent Eur Neurosurg 2021; 82(05): 424-429
DOI: 10.1055/s-0040-1721006
Original Article

A Supplemental Technique for Preoperative Evaluation of Giant Intracranial Aneurysm

Hua-wei Wang*
1   Chinese PLA General Hospital, Neurosurgery, Beijing, China
Chen Wu*
1   Chinese PLA General Hospital, Neurosurgery, Beijing, China
Zhe Xue*
1   Chinese PLA General Hospital, Neurosurgery, Beijing, China
Xu-jun Shu
1   Chinese PLA General Hospital, Neurosurgery, Beijing, China
Zheng-hui Sun
1   Chinese PLA General Hospital, Neurosurgery, Beijing, China
› Author Affiliations


Background Preoperative planning mainly relies on digital subtraction angiography (DSA) and computed tomography angiography. However, neither technique can reveal thrombi in giant intracranial aneurysms (GIAs). In this study, we aimed to reconstruct the circulating and noncirculating parts of GIAs with the time-of-flight (TOF) and motion-sensitized driven-equilibrium (MSDE) sequences with 3D Slicer to reveal an integrated presentation of GIAs, compare its accuracy, and validate the usefulness for preoperative planning.

Material and Methods Patients with GIAs who were treated with microsurgery in our department were included in this study. Both the TOF and MSDE sequence data for each patient were loaded into 3D Slicer for reconstruction and segmentation. The parameters measured by 3D Slicer were compared with those measured by DSA.

Results The mean diameter for all GIAs was 28.7 ± 1.5 mm (range, 25.9–31.9 mm). The mean diameter for all GIAs measured by DSA and 3D Slicer was 24.46 ± 5.25 and 28.66 ± 1.48 mm, respectively (t = 4.948, p < 0.01). When only the nonthrombotic GIAs were included, the mean diameter measured by DSA and 3D Slicer was 28.69 ± 2.03 and 28.97 ± 1.79 mm, respectively (t = 1.023, p = 0.323). The mean aneurysmal volume was 8,292.6 ± 1,175.1 mm3 and the mean thrombotic volume was 3,590.0 ± 1,003.7 mm3.

Conclusion The MSDE sequence brings diagnostic benefits as a comparison to other MRI sequences. Reconstruction of GIAs with 3D Slicer is a low-cost, dependable, and useful supplemental technique for surgical planning.

* These authors contributed equally to this manuscript and should be considered as the co-first authors.

Publication History

Received: 21 June 2019

Accepted: 12 May 2020

Article published online:
14 February 2021

© 2021. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

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