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.
Cerebral Angiography
/ methods
Collateral Circulation
/ physiology
Endovascular Procedures
/ methods
Female
Humans
Male
Meninges
/ diagnostic imaging
Middle Aged
Observer Variation
Radiography
/ methods
Radiologists
/ standards
Radiology, Interventional
/ methods
Reproducibility of Results
Societies, Medical
/ standards
Stroke
/ diagnostic imaging
United States
/ epidemiology
angiography
standards
stroke
thrombectomy
Journal
Journal of neurointerventional surgery
ISSN: 1759-8486
Titre abrégé: J Neurointerv Surg
Pays: England
ID NLM: 101517079
Informations de publication
Date de publication:
Apr 2019
Apr 2019
Historique:
received:
15
06
2018
revised:
23
07
2018
accepted:
26
07
2018
pubmed:
23
8
2018
medline:
15
5
2019
entrez:
23
8
2018
Statut:
ppublish
Résumé
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 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.
Sections du résumé
BACKGROUND
BACKGROUND
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.
OBJECTIVE
OBJECTIVE
To evaluate inter- and intraobserver agreementin angiographic leptomeningeal collateral flow assessment.
MATERIALS AND METHODS
METHODS
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.
RESULTS
RESULTS
Overall agreement among the 19 observers was poor (κ = 0,16 ± 6,5.10
CONCLUSION
CONCLUSIONS
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.
Identifiants
pubmed: 30131382
pii: neurintsurg-2018-014185
doi: 10.1136/neurintsurg-2018-014185
doi:
Types de publication
Journal Article
Multicenter Study
Randomized Controlled Trial
Langues
eng
Sous-ensembles de citation
IM
Pagination
338-341Informations de copyright
© Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.
Déclaration de conflit d'intérêts
Competing interests: None declared.