Table 7.

Derived image measurements. *Measurements included only when a scale bar was published with the image.

Derived image measurements
Name	Units	Method
length*, l	mm	straight length
width*, w	mm	$\max \left(q_1,q_2,q_3\right)$
volume*	mm3	$\frac{1}{6}\pi l{w}^2$
aspect ratio	ratio, no units	$\frac{l}{w}$
asymmetry	ratio, no units	$\frac{max\left(q_1,q_3\right)}{min\left(q_1,q_3\right)}-1$
angle of curvature	radians	as recorded