Observation and measurement of applied anatomical features for thoracic intervertebral foramen puncture on computed tomography images

Figure 2 Measurement of parameters related to the intervertebral foramen. A and B: The three-dimensional model of the thoracic vertebra was resliced parallel to the inferior border of the superior vertebral body of the intervertebral foramen, and the upper 1/3 level tomographic image of the intervertebral foramen was selected for parameter measurement; C and D: The width of the lateral border of the articular process/lamina; the width of the posterior border of the vertebral body; and the horizontal inclination angle from the lateral border of the articular process/lamina to the posterolateral border of the vertebral body. W_P: The width of the lateral border of the articular process/lamina; W_V: The width of the posterior border of the vertebral body; α: The horizontal inclination angle from the lateral border of the articular process/lamina to the posterolateral border of the vertebral body.