Figure 3
From: Measurement of axial vertebral rotation using three-dimensional ultrasound images
(a) - The frontal view (left) and (b) - The transverse view (right) of the 3D reconstructed T7 vertebra for axial vertebral rotation measurement (a) The centres of laminae (red dots) or transverse processes (blue dots) were manually located by using the computer mouse pointer. (b) The rotation of each reconstructed vertebra was automatically determined by the angle between the line going through either the centres of laminae (L-L) or the centres of transverse processes (TP-TP) and a reference vertical plane (xz).