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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: J Magn Reson Imaging. 2013 Oct 11;40(1):13–25. doi: 10.1002/jmri.24333

Table 8.

Inter-observer agreement results using weighted kappa coefficients between Reader 1 and Reader 2 for overall image quality assessments and delineation of anatomical structures for ARC, L1-SPIRiT and CC-L1-SPIRiT.*

ARC L1-SPIRiT CC-L1-SPIRiT
Overall Image Quality
Qualitative SNR Fair Slight Slight
Coherent Structural Artifacts Slight Poor Slight
Image Contrast Poor Poor Poor
Image Blurring Slight Fair Fair
Synthetic Appearance Slight Poor Slight
Delineation of Anatomical Structures
Renal Artery Fair Moderate Fair
Liver Moderate Fair Slight
Portal Vein Moderate Slight Poor
Hepatic Vein Fair Fair Moderate
Pancreas Fair Substantial Substantial
Adrenals Substantial Moderate Substantial
Spine Substantial Slight Slight
*

Interpretation of weighted kappa coefficient (kw) used: kw<0, poor; 0<=kw<0.2, slight; 0.2<=kw<0.4, fair; 0.4<=kw<0.6, moderate; 0.6<=kw<0.8, substantial; 0.8<=kw<1, almost perfect.