Figure 5.

Quantification of morphological parameters of aortic vessels. (A) Graphic illustration of measuring the lumen area and wall area in healthy subjects. The inner and outer contours were manually traced on both 2D TSE images and dark-blood images of MT-MACS. Both the slice position and slice thickness were matched during the measurements. (B)(D) Comparison of lumen and wall area measurement, respectively, using the proposed MT-MACS and a convention 2D TSE reference. Black dotted lines represent identity line (Y = X), while solid red lines stand for regression of the results from these 2 methods. The intraclass correlation coefficients (ICC) for LA and WA measurements were 0.993 (P < 0.001) and 0.969 (P < 0.001), respectively. (C)(E) Bland-Altman plots comparing measurement results acquired by these two imaging techniques. Solid red lines and dashed red lines indicate the means and standard deviation of LA and WA values between different methods.