Inter- and intraobserver reliability for angiographic leptomeningeal collateral flow assessment by the American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology (ASITN/SIR) scale.

Details

Serval ID
serval:BIB_38B761F6D618
Type
Article: article from journal or magazin.
Collection
Publications
Title
Inter- and intraobserver reliability for angiographic leptomeningeal collateral flow assessment by the American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology (ASITN/SIR) scale.
Journal
Journal of neurointerventional surgery
Author(s)
Ben Hassen W., Malley C., Boulouis G., Clarençon F., Bartolini B., Bourcier R., Rodriguez Régent C., Bricout N., Labeyrie M.A., Gentric J.C., Rouchaud A., Soize S., Saleme S., Raoult H., Gallas S., Eugène F., Anxionnat R., Herbreteau D., Bracard S., Naggara O.
ISSN
1759-8486 (Electronic)
ISSN-L
1759-8478
Publication state
Published
Issued date
04/2019
Peer-reviewed
Oui
Volume
11
Number
4
Pages
338-341
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
The adequacy of leptomeningeal collateral flow has a pivotal role in determining clinical outcome in acute ischemic stroke. The American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology (ASITN/SIR) collateral score is among the most commonly used scales for measuring this flow. It is based on the extent and rate of retrograde collateral flow to the impaired territory on angiography.
To evaluate inter- and intraobserver agreementin angiographic leptomeningeal collateral flow assessment.
Thirty pretreatment angiogram video loops (frontal and lateral view), chosen from the randomized controlled trial THRombectomie des Artères CErebrales (THRACE), were sent for grading in an electronic file. 19 readers participated, including eight who had access to a training set before the first grading. 13 readers made a double evaluation, 3 months apart.
Overall agreement among the 19 observers was poor (κ = 0,16 ± 6,5.10 <sup>-3</sup> ), and not improved with prior training (κ = 0,14 ± 0,016). Grade 4 showed the poorest interobserver agreement (κ=0.18±0.002) while grades 0 and 1 were associated with the best results (κ=0.52±0.001 and κ=0.43±0.004, respectively). Interobserver agreement increased (κ = 0,27± 0,014) when a dichotomized score, 'poor collaterals' (score of 0, 1 or 2) versus 'good collaterals' (score of 3 or 4) was used. The intraobserver agreements varied between slight (κ=0.18±0.13) and substantial (κ=0.74±0.1), and were slightly improved with the dichotomized score (from κ=0.19±0.2 to κ=0.79±0.11).
Inter- and intraobserver agreement of collateral circulation grading using the ASITN/SIR score was poor, raising concerns about comparisons among publications. A simplified dichotomized judgment may be a more reproducible assessment when images are rated by the same observer(s) in randomized trials.
Keywords
angiography, standards, stroke, thrombectomy
Pubmed
Create date
27/09/2018 13:02
Last modification date
20/08/2019 13:28
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