Relation between Aneurysm Volume, Packing, and Compaction in 145 Cerebral Aneurysms Treated with Coils

Menno Sluzewski, Willem Jan van Rooij, Marian J. Slob, Javier Oliván Bescós, Cornelis H. Slump, Douwe Wijnalda

    Research output: Contribution to journalArticleAcademicpeer-review

    312 Citations (Scopus)


    PURPOSE: To assess the relation between aneurysm volume, packing, and compaction in cerebral aneurysms treated with coils.

    MATERIALS AND METHODS: The volumes of 145 aneurysms that were treated with coils were calculated with biplanar angiographic images and a custom-designed method. Partially thrombosed aneurysms were excluded. Packing was defined as the ratio between the volume of the inserted coils and the volume of the aneurysm and was calculated for all 145 aneurysms. Results at 6-month follow-up angiography were dichotomized into presence or absence of compaction.

    RESULTS: Aneurysm volume, packing, and compaction at 6-month follow-up were closely related. Large aneurysm volume was associated with low packing and frequent compaction. High packing prevents compaction. If the aneurysm volume was packed for 24% or more with coils, compaction did not occur in aneurysms with a volume of less than 600 mm3. In small aneurysms with volumes of less than 200 mm3, compaction did not occur when packing was above 20%.

    CONCLUSION: The common practice of inserting as many coils as possible in cerebral aneurysms is sensible in trying to avoid compaction. In aneurysms with packing of 24% or more, no compaction occurred at 6-month angiographic follow-up. In aneurysms with a volume of more than 600 mm3, high packing could not be achieved, which resulted in compaction in the majority of aneurysms.
    Original languageEnglish
    Pages (from-to)653-658
    Number of pages6
    Issue number3
    Publication statusPublished - 2004


    • METIS-220033


    Dive into the research topics of 'Relation between Aneurysm Volume, Packing, and Compaction in 145 Cerebral Aneurysms Treated with Coils'. Together they form a unique fingerprint.

    Cite this