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Results of endovascular treatment of aneurysms depending on their size, volume and coil packing density
Results of endovascular treatment of aneurysms depending on their size, volume and coil packing density
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Results of endovascular treatment of aneurysms depending on their size, volume and coil packing density
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Results of endovascular treatment of aneurysms depending on their size, volume and coil packing density
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Results of endovascular treatment of aneurysms depending on their size, volume and coil packing density
Results of endovascular treatment of aneurysms depending on their size, volume and coil packing density
Journal Article

Results of endovascular treatment of aneurysms depending on their size, volume and coil packing density

2013
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Overview
In contrast to neurosurgery, which is more efficient, endovascular treatment (EVT) is less invasive. The main purpose of EVT is complete occlusion of the aneurysm and protection from subarachnoid haemorrhage. Accurate measurements of the aneurysm (size, volume) obtained using a 3D digital subtraction angiography (DSA) workstation can assist in the proper assessment of coil packing density (CPD), which affects possible distant recanalization. The main disadvantage of endovascular treatment of intracranial aneurysms compared to neurosurgery is the high recurrence rate. We evaluated the results of endovascular treatment of aneurysms depending on their size, volume and coil packing density. Thirty-five patients with intracranial aneurysms underwent endovascular embolization with bare platinum coils. Three-dimensional DSA was used to evaluate aneurysms’ morphology. Eighteen patients underwent 3D DSA follow-up 6-45 months after treatment. Initial and follow-up results of embolization were assessed with the Raymond-Montreal scale. The impact of aneurysms’ morphology, volume and initial CPD on endovascular treatment was evaluated. Among 35 patients, complete initial embolization was achieved in 74%. Mean initial aneurysm volume in 3D DSA was 0.517 mL and decreased significantly after embolization. Initial CPD varied from 74% to 2% depending on aneurysm diameter (12.1% for aneurysms ≥ 10 mm, 22.5% for aneurysms < 10 mm). Results of embolization on the Raymond-Montreal scale significantly depended on aneurysms’ CPD. Aneurysms’ recanalization rate on 3D DSA follow-up was 36%, with complete recanalization in 3.3%. We can achieve a better outcome if size and volume of the aneurysm sac is smaller and if CPD is higher. Chirurgiczne zabezpieczenie tętniaka za pomocą klipsa skuteczniej zapobiega rekanalizacji, ale leczenie wewnątrznaczyniowe (endovascular treatment – EVT) jest mniej inwazyjne. Głównym celem EVT jest całkowita okluzja tętniaka wewnątrzczaszkowego i zapobieganie krwotokowi podpajęczynówkowemu. Największą wadą leczenia wewnątrznaczyniowego w porównaniu z neurochirurgicznym klipsowaniem jest duża częstość rekanalizacji. Celem pracy było porównanie wyników leczenia wewnątrznaczyniowego tętniaków według skali Montreal w zależności od wielkości tętniaka, objętości worka tętniaka i gęstości wypełnienia spiralami (coil packing density – CPD). Zabieg EVT wykonano u 35 pacjentów z tętniakami wewnątrzczaszkowymi. Morfologia oraz objętość tętniaków zostały wyliczone przy użyciu stacji roboczej 3D DSA. U każdego pacjenta z wykorzystaniem komercyjnego oprogramowania wyliczono CPD w tętniaku. U 18 pacjentów przeprowadzono kontrolne badanie 3D DSA po upływie 6–45 miesięcy. Wyniki oceniano w skali Raymond-Montreal bezpośrednio po zabiegu i w badaniu kontrolnym. Wśród 35 pacjentów całkowitą wstępną embolizację osiągnięto u 74% osób. Wstępna średnia objętość tętniaka w 3D DSA wynosiła 0,517 ml i zmniejszyła się istotnie po embolizacji (p = 0,017). Wyjściowo po embolizacji CPD wahała się od 2% do 74% w zależności od objętości tętniaka (średnio 12,1% dla tętniaków ≥ 10 mm i 22,5% dla tętniaków < 10 mm). Wyniki embolizacji w skali Raymond-Montreal istotnie statystycznie zależały od CPD. Częściowa rekanalizacja w badaniu kontrolnym dotyczyła 36% pacjentów (w tym u 3,3% obserwowano całkowitą rekanalizację). Im mniejszy tętniak i objętość worka oraz im większa CPD, tym lepszy wynik końcowy (tzn. niższa klasa w skali Montreal).