Insights into Imaging

Table 5 Summary of the intra- and interrater correlation of quality scores for each quantitative metric. Metrics are identified according to the letters assigned in Table 2

From: Image quality in whole-body MRI using the MY-RADS protocol in a prospective multi-centre multiple myeloma study

Intra-rater
Metric	A	B	C1	C2	D	E1	E2	F1	F2	G
ICC	0.91	0.17	0.95	0.88	0.83	0.74	0.32	0.59	0.66	0.07
p	< .001	.282	< .001	.006	< .001	.004	.138	.019	.016	.372
Mean bias	− 0.06	0.16	0.83	− 1.23	− 0.05	0.10	3.29	0.38	0.27	− 0.80
Inter-rater
Metric	A	B	C1	C2	D	E1	E2	F1	F2	G
ICC	0.51	0.01	0.85	0.40	0.36	0.92	0.90	0.65	0.08	0.08
p	.032	.489	.005	.211	.131	< .001	< .001	.007	.413	.413
Mean bias	− 0.77	− 0.03	− 1.83	1.98	− 0.06	0.00	− 0.52	0.37	− 0.65	− 0.65

A SNR B anterior thoracic signal loss, C1 susceptibility: number of slices, C2 susceptibility: length, D fat suppression, E1 ghosting (brain), E2 ghosting (pelvis), F1 geometric distortion (brain), F2 geometric distortion (pelvis), G eddy current distortion

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