Characterization of Severe Arterial Phase Respiratory Motion Artifact on Gadoxetate Disodium-Enhanced MRI - Assessment of Interrater Agreement and Reliability.
Rofo
; 190(4): 341-347, 2018 Apr.
Article
em En
| MEDLINE
| ID: mdl-29448290
ABSTRACT
PURPOSE:
To assess the interrater agreement and reliability of experienced abdominal radiologists in the characterization and grading of arterial phase gadoxetate disodium-related respiratory motion artifact on liver MRI. MATERIALS ANDMETHODS:
This prospective multicenter study was initiated by the working group for abdominal imaging within the German Roentgen Society (DRG), and approved by the local IRB of each participating center. 11 board-certified radiologists independently reviewed 40 gadoxetate disodium-enhanced liver MRI datasets. Motion artifacts in the arterial phase were assessed on a 5-point scale. Interrater agreement and reliability were calculated using the intraclass correlation coefficient (ICC) and Kendall coefficient of concordance (W), with pâ<â0.05 deemed significant.RESULTS:
The ICC for interrater agreement and reliability were 0.983 (CI 0.973â-â0.990) and 0.985 (CI 0.978â-â0.991), respectively (both pâ<â0.0001), indicating excellent agreement and reliability. Kendall's W for interrater agreement was 0.865. A severe motion artifact, defined as a mean motion score ≥â4 in the arterial phase was observed in 12 patients. In these specific cases, a motion score ≥â4 was assigned by all readers in 75â% (nâ=â9/12 cases).CONCLUSION:
Differentiation and grading of arterial phase respiratory motion artifact is possible with a high level of inter-/intrarater agreement and interrater reliability, which is crucial for assessing the incidence of this phenomenon in larger multicenter studies. KEY POINTS · Inter- and intrarater agreement for motion artifact scoring is excellent among experienced readers.. · Interrater reliability for motion artifact scoring is excellent among experienced readers.. · Characterization of severe motion artifacts proved feasible in this multicenter study.. CITATION FORMAT · Ringe KI, Luetkens JA, Fimmers R etâal. Characterization of Severe Arterial Phase Respiratory Motion Artifact on Gadoxetate Disodium-Enhanced MRI - Assessment of Interrater Agreement and Reliability. Fortschr Röntgenstr 2017; 190 341â-â347.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
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Mecânica Respiratória
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Artefatos
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Gadolínio DTPA
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Radiologistas
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Fígado
Tipo de estudo:
Clinical_trials
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Observational_studies
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Risk_factors_studies
País como assunto:
Europa
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article