Evidence map›Paper›PMID 30046917›Full record

ArticleClinical neuroradiology2019

Importance of the First Coil in the Embolization of Intracranial Aneurysms : A Case Control Study.

Emerson Brandão Sousa, Laise Franco de Sousa Brandão, Cléciton Braga Tavares, José Nazareno Pearce de Oliveira Brito, Iruena Moraes Kessler

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Article in Clinical neuroradiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 29% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Packing density and the angiographic results of coil embolization of intracranial aneurysms: A systematic review and meta-analysis.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2026
    Pooled it
  2. Interdependence of First-coil and Global volume embolization ratios (VERs) calculated by Sim&Size in predicting aneurysm occlusion outcomes.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Emerson Brandão SousaUniversidade de Brasília (UNB), Brasília, Brazil. emerson_brand@hotmail.com.
Laise Franco de Sousa BrandãoFundação Municipal de Saúde, Teresina, Brazil.
Cléciton Braga TavaresHospital São Marcos, Teresina, Brazil.
José Nazareno Pearce de Oliveira BritoHospital São Marcos, Teresina, Brazil.
Iruena Moraes KesslerUniversidade de Brasília (UNB), Brasília, Brazil.
Universidade de Brasília · BRUniversidade São Marcos · BRSecretaria Municipal de Saúde · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeEndovascular therapy for the treatment of cerebral aneurysms has a higher incidence of rebleeding and a lower occlusion rate than microsurgical clipping. This study investigated whether first coil volume packing density (1st VPD) and first loop diameter of the first coil (1st LD) are associated with recanalization after endovascular coiling.

methodsThe study included 174 initial saccular aneurysm cases from 2010 to 2015. Between the recanalization and non-recanalization groups, we compared age, sex, aneurysm location, rupture occurrence, shape, maximum aneurysm size, neck width, dome-to-neck ratio, aneurysm volume, coil volume, VPD, 1st VPD, 1st LD, relation of the first loop diameter of the first coil and the maximum aneurysm size (RLAS), types of assistance techniques, and the Raymond scale score at initial and follow-up angiography.

resultsRecanalization occurred in 41 cases (23.6%). The factors associated with recanalization were irregular shape, maximum aneurysm size, neck width, dome-to-neck ratio, aneurysm volume, VPD, 1st VPD and 1st LD smaller than the maximum aneurysm size. The cut-off values for aneurysmal recanalization were 92%, 11% and 37% for RLAS, 1st VPD and VPD, respectively.

conclusionThe 1st VPD and 1st LD were associated with aneurysmal recanalization after embolization. These factors provide a helpful index for coil programming.

Indexed as

AdolescentAdultAgedAged, 80 and overAneurysm, RupturedCase-Control StudiesCerebral AngiographyEmbolization, TherapeuticEndovascular ProceduresFemaleHumansIntracranial AneurysmMaleMiddle AgedPlatelet Aggregation InhibitorsRecurrencePlatelet Aggregation InhibitorsEffect modifier, epidemiologicEndovascular proceduresTherapeutic embolizationTreatment failureTreatment outcome

Identifiers

PMID30046917
OpenAlexW2883156827

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.