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. Author manuscript; available in PMC: 2022 Aug 1.
Published in final edited form as: AJR Am J Roentgenol. 2022 Feb 23;219(2):303–313. doi: 10.2214/AJR.21.27234

Table 4 –

Interobserver agreement for MRI findingsa.

Finding Central Reviewer Findings κ
(95% CI)		 ICC
(95% CI)		 Three-Rater Agreement
Pancreas atrophy 52/80 (65) 0.52
(0.40, 0.65)		 NA 52/80 (65)
Pancreas thickness (mm), mean ± SD NA NA
 Head 22.7±5.7 0.59 (0.49, 0.68)
 Neck 11.2±3.2 0.53 (0.43, 0.63)
 Body 16.3±5.0 0.62 (0.52, 0.70)
 Tail 16.3±4.9 0.68 (0.59, 0.76)
Pancreas divisum 15/80 (19) 0.49
(0.36, 0.62)		 NA 67/80 (84)
Anomalous pancreaticobiliary junction 1/80 (1) 0.32
(0.19, 0.44)		 NA 76/80 (95)
Pancreatic duct dilation 65/80 (81) 0.64
(0.51, 0.77)		 NA 60/80 (75)
Pancreatic duct diameter (mm), mean ± SD 4.2±2.4 NA 0.77 (0.71, 0.83) NA
Pancreatic duct irregularity 55/80 (69) 0.74
(0.62, 0.87)		 NA 66/80 (83)
Pancreatic duct stricture 33/80 (41) 0.47
(0.34, 0.59)		 NA 52/80 (65)
Dilation of pancreatic duct side branches 48/80 (60) 0.70
(0.57, 0.82)		 NA 62/80 (78)
Number of dilated pancreatic duct side branches 0: 32/80 (40)
1–2: 6/80 (8)
≥3: 42/80 (53)		 0.65
(0.52, 0.78)		 NA 51/80 (64)
Intraductal (pancreas) filling defects 19/80 (24) 0.49
(0.36, 0.61)		 NA 60/80 (75)
Loss of T1-weighted signal Any: 50/80 (63)
Mild: 15/80 (19)
Moderate: 27/80 (34)
Severe: 8/80 (10)		 0.37
(0.26, 0.47)		 NA 27/80 (34)
T1 signal intensity ratio
 Pancreas-to-spleen 1.1±0.3 NA 0.68 (0.59, 0.75) NA
 Pancreas-to-muscle 1.1±0.4 0.87 (0.83, 0.90)
Parenchymal enhancement Normal: 19/38 (50)
Hypoenhancing: 9/38 (24)
Hyperenhancing: 1/38 (0)
Heterogeneous: 10/38 (26)		 0.43
(0.22, 0.65)		 NA 50/80 (63)
Acute pancreatitis 41/80 (51) 0.42
(0.29, 0.55)		 NA 56/80 (70)
Gallstones 4/80 (5) −0.01
(−0.13, 0.12)		 NA 78/80 (98)

Central reviewer findings reported as numerator and denominator with percentage in parentheses, unless otherwise reported. Kappa coefficients and ICC presented for the three reviewers. Three-rater agreement reports the fraction of examinations for which all three reviewers agreed on the presence or absence of a finding for binary features or on the specific category for findings with three or four categories, expressed as numerator and denominator with percentage in parentheses.

a

38/80 examinations performed without and with IV contrast material

ICC = intraclass correlation coefficient; NA = not applicable