Table 3 Measurement variability of multiplanar aortic CMR measurements
Intraobserver | Interobserver | |||
|---|---|---|---|---|
Mean difference a | Limits of agreement b | Mean difference a | Limits of agreement b | |
mm | mm | mm | mm | |
Aortic sinus | -0.04 | -1.9 - 1.8 | 0.1 | -2.1 - 2.3 |
Sinotubular junction | 0.02 | -1.8 - 1.9 | -0.3 | -2.3 - 1.8 |
Mid-ascending aorta | -0.1 | -1.9 - 1.8 | -0.1 | -1.9 - 1.4 |
Distal ascending aorta | -0.1 | -1.9 - 2.1 | 0.1 | -1.6 - 1.7 |
Proximal transverse aortic arch | 0.2 | -1.6 - 2.0 | -0.2 | -1.4 - 1.9 |
Distal transverse aortic arch | 0.01 | -1.7 - 1.7 | -0.01 | -1.6 - 1.4 |
Aortic isthmus | 0.1 | -1.6 - 1.4 | -0.1 | -1.4 - 1.9 |
Proximal descending aorta | 0.08 | -1.5 - 1.4 | 0.08 | -1.1 - 1.9 |
Distal descending aorta | -0.06 | -1.6 - 1.7 | 0.1 | -1.2 - 1.5 |