Figure 6.
Structural variation in the circumferential direction. Circumferential (X1-X3) plane sections shown from two hearts to demonstrate the dependence of sheet angle on X1 location. Dashed box encompasses the approximate region where fibre angle is >45° – where sheet orientations can be determined from X1-X3 plane sections with good accuracy. The right panels contain the automatically determined structural angles. Tissue block Ex03 demonstrates constant sheet orientations over 10 mm in the X1 direction, whilst the predominant sheet angle in Ex07 reverses through 90° over the same distance.