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Date Published: 14/01/2025
Abstract Views: 4
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DOI: https://doi.org/10.55046/vjrnm.57.752.2024
Issue
No. 57 (2024)
Section
Scientific research
How to Cite
Vu, D. L., Tran, A. T., Le, H. K., Nguyen, Q. A., Nguyen, thi thu T., Nguyen, H. A., Nguyen, T. T., Tran, T. C., Le, C. C., & Tran, X. B. (2024). Blood Flow Changes Induced by Flow Diverting Stent in Intracranial Aneurysm. Vietnamese Journal of Radiology and Nuclear Medicine, 57, 59-66. https://doi.org/10.55046/vjrnm.57.752.2024

Blood Flow Changes Induced by Flow Diverting Stent in Intracranial Aneurysm

Vu Dang Luu1, Dr Tran Anh Tuan2, Le Hoang Kien2, Dr Nguyen Quang Anh2, Nguyen Thi Thu Trang2, Nguyen Huu An2, Dr Nguyen Tat Thien2, Tran Cuong2, Le Chi Cong2, Xuan Bach Tran
1 Hanoi Medical University
2 Bach Mai Hospital

Main Article Content

Abstract

Purpose: We used AneurysmFlow software (Philips Healthcare) on DSA to analyze flow characteristics in aneurysms after FDS treatment.


Subjects and methods: 18 patients with unruptured cerebral aneurysms were treated for FDS at the Bach Mai Radiology Center. First, a 3D rotational angiogram of the aneurysm was acquired. Then, two high frame rate DSA sequences were acquired before and right after the implantation of the FDS with a contrast injection of 1.5 ml/sec for a duration of 4s. The aneurysmal flow was calculated before - after the implantation of the FDS for each patient. 


RESULTS: The aneurysmal flow was significantly reduced after implantation of the FDS (p=0.001 < 0.05), the mean reduction was about 19.51%. However, 4 aneurysms (21.05%) had increased flow after treatment. The pulsatility of aneurysmal flow is reduced after the insertion of the flow diverter. This reduction of the aneurysmal flow does not differ by aneurysm size  (large and medium aneurysm, p = 0.612) and aneurysm morphology (smooth and irregular, lobe, knob, bilobar; p = 0.625). The MAFA ratio in the study is variable and mostly was less than 1, but all aneurysms in the study were complete obliteration at 6 months after the intervention.


Conclusion: Significant reductions in flow inside the aneurysm were observed after implantation of the FDS. There was no difference in the reduction of aneurysmal flow after intervention according to aneurysm size and morphology.

Keywords

Mean aneurysm flow amplitude, Flow diversion, MAFA ratio

Article Details

References

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