Abstract
Methods Thirty-three consecutive patients with 34 TVIAs were prospectively recruited and treated with endovascular techniques. The volume of TVIAs and the required length of coils were calculated by the AngioSuite software before embolization. The treatment efficacy of TVIAs was assessed using the Raymond scale (Rs) and the modified Rankin scale (mRs). Results Of the 34 aneurysms with an average volume of 7.16 mm3, 13 aneurysms were treated with sole coil embolization, 19 by stent-assisted embolization, and 2 by balloon-assisted embolization. The average coil length was 5.32 cm, and the average packing density was 41.21%. The immediate DSA showed that total occlusion (Rs = 1) was achieved in 15 aneurysms, subtotal (Rs = 2) in 9, and partial (Rs = 3) in 11. Total occlusion was achieved in 30 aneurysms and subtotal in the other 4 aneurysms at 6-month follow-up. Baseline volume and diameter of aneurysms were significantly correlated with the coil length (r = 0.801, P < 0.001; r = 0.711, P < 0.001). Conclusions Coil embolization of TVIAs was easy to achieve high packing density. According to the data from AngioSuite, relative few coils can increase the safety in procedure and stenting may reduce risk of aneurysmal recurrence.
Highlights
Intracranial aneurysms (IAs) are commonly acquired cerebral lesions attacking about 2%~3% of the general population, which are associated with significant neurologic impairment and high mortality [1]
Based on the guiding role of tiny volume intracranial aneurysms (TVIAs) volume measuring in endovascular treatment, we propose that the volume of TVIAs is a superior index over diameter in describing the characteristic of a cystic lesion, especially for those aneurysms with irregular appearance
Our study is aimed at assessing the ability of the AngioSuite software in calculating TVIA volume and its role in prospectively selecting suitable coil, predicting packing density and the resultant clinical efficiency of endovascular treatment
Summary
Intracranial aneurysms (IAs) are commonly acquired cerebral lesions attacking about 2%~3% of the general population, which are associated with significant neurologic impairment and high mortality [1]. The ability to assess the optimal packing density prior to endovascular treatment is fundamentally limited by the lack of accurate calculation of aneurysm volumes [9]. Aneurysm volume measuring is important for treatment planning and packing density calculation [10] This is especially true for the exact volume calculation of TVIAs due to their extremely limited space for BioMed Research International stable coil deployment. Our study is aimed at assessing the ability of the AngioSuite software in calculating TVIA volume and its role in prospectively selecting suitable coil, predicting packing density and the resultant clinical efficiency of endovascular treatment. Ruptured tiny volume intracranial aneurysms (TVIAs) are associated with high risk of intraprocedural perforation. Aneurysm volume measuring is important for treatment planning and packing density calculation. According to the data from AngioSuite, relative few coils can increase the safety in procedure and stenting may reduce risk of aneurysmal recurrence
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