Figure 4.

Deep learning agrees with manual slice planning and correctly visualizes corresponding AHA segments. (A) Rows 1–3: For each long-axis imaging plane, Column 1 shows the slice location on the short-axis slice (mid-ventricular slice for 2CH and 4CH and basal slice for 3CH). Columns 2–4 depict the corresponding images. Rows 4–5: For the short-axis mitral valve and mid-ventricular plane, Column 1 shows the slice position of the plane on the 2CH long-axis. Columns 2–4 depict the short-axis images: Plane_m1, (plane resliced by Reader 1), Plane_m2, (plane resliced by Reader 2) and Plane_DL (deep learning-derived slice). (B) Six mid-ventricular AHA segments are shown as arcs on a mid-ventricular short-axis slice. The percentage of cases in which a wall was correctly intersected by the associated long-axis plane are shown for the 2CH (red solid line, lower left), 3CH (green solid line, top left), and 4CH (blue solid line, right) planes. There is close agreement between the manual planes (reported in cyan) and deep learning (yellow). A, anterior; AL, anterolateral; AS, anteroseptal; I, inferior; IL, inferolateral; IS, inferoseptal.