PMOD Compatibility Segmentation

Septal Angle

The segmentation model used in prior PCARD versions is based on the definition of the septal angle in the different short axis slices as illustrated below.

Based on this angle, the myocardium is divided into six (base and mid-cavity) or four (apex) segments as illustrated below.

Basal and Mid-Cavity Segments

The septal angle is halved, resulting in the anteroseptal and inferoseptal segments. The complementary, non-septal angle is divided into three equal sectors. Two of them define the anterior and the lateral sectors, while the third is halved to define the inferior and inferolateral segments.

Apical Segments

In the apical slices, neither the septal angle nor the inferior angle are halved, resulting in the four segment septal, anterior, lateral, and inferior.

Polar Plot

Assuming a septal angle of 90° the polar plot of the described segmentation looks as follows. Note that the apical cap is not represented in this segmentation.