Ringe Kristina Imeen, Luetkens Julian A, Fimmers Rolf, Hammerstingl Renate Maria, Layer Günter, Maurer Martin H, Nähle Claas Philip, Michalik Sabine, Reimer Peter, Schraml Christina, Schreyer Andreas G, Stumpp Patrick, Vogl Thomas J, Wacker Frank K, Willinek Winfried, Kukuk Guido Mattias
Department of Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany.
Department of Radiology, University of Bonn, Germany.
Rofo. 2018 Apr;190(4):341-347. doi: 10.1055/s-0044-100727. Epub 2018 Feb 15.
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.
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 p < 0.05 deemed significant.
The ICC for interrater agreement and reliability were 0.983 (CI 0.973 - 0.990) and 0.985 (CI 0.978 - 0.991), respectively (both p < 0.0001), indicating excellent agreement and reliability. Kendall's W for interrater agreement was 0.865. A severe motion artifact, defined as a mean motion score ≥ 4 in the arterial phase was observed in 12 patients. In these specific cases, a motion score ≥ 4 was assigned by all readers in 75 % (n = 9/12 cases).
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.
· 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..
· Ringe KI, Luetkens JA, Fimmers R et al. Characterization of Severe Arterial Phase Respiratory Motion Artifact on Gadoxetate Disodium-Enhanced MRI - Assessment of Interrater Agreement and Reliability. Fortschr Röntgenstr 2017; 190: 341 - 347.
评估经验丰富的腹部放射科医生对肝脏MRI动脉期钆塞酸二钠相关呼吸运动伪影进行特征描述和分级的评分者间一致性及可靠性。
本前瞻性多中心研究由德国放射学会（DRG）腹部影像工作组发起，并获得各参与中心当地机构审查委员会的批准。11名具有委员会认证的放射科医生独立审查了40例钆塞酸二钠增强肝脏MRI数据集。动脉期的运动伪影采用5分制进行评估。使用组内相关系数（ICC）和肯德尔和谐系数（W）计算评分者间一致性和可靠性，p<0.05被视为具有显著性。
评分者间一致性和可靠性的ICC分别为0.983（95%CI 0.973 - 0.990）和0.985（9 CI 0.978 - 0.991）（均p<0.0001），表明具有极好的一致性和可靠性。评分者间一致性的肯德尔W值为0.865。12例患者观察到严重运动伪影，定义为动脉期平均运动评分为≥4分。在这些特定病例中，75%（n = 9/12例）的读者均给出运动评分≥4分。
动脉期呼吸运动伪影的鉴别和分级具有较高的评分者间/评分者内一致性和评分者间可靠性，这对于在更大规模的多中心研究中评估该现象的发生率至关重要。
· 经验丰富的读者对运动伪影评分的评分者间和评分者内一致性极佳。· 经验丰富的读者对运动伪影评分的评分者间可靠性极佳。· 在本多中心研究中，严重运动伪影特征描述被证明是可行的。
· Ringe KI, Luetkens JA, Fimmers R等。钆塞酸二钠增强MRI上严重动脉期呼吸运动伪影的特征描述 - 评分者间一致性和可靠性评估。Fortschr Röntgenstr 2017; 190: 341 - 347。
