Fig. 1
DAVC-PGV at 0°, 5°, 10°, and 15° in L1. The cross-section of L1 was passed through the widest plane of the bilateral pedicles and was parallel to the superior endplate. A, B, C, and D represent the left TSA of the BPS at 0°, 5°, 10°, and 15°, respectively; A’, B′, C′, and D’ represent the right TSA of the BPS at 0°, 5°, 10°, and 15°, respectively. DAVC-PGV represents the distance from the AVC to the PGV. The green single arrow lines represent the extent of the BPS that did not intersect the PGV; it was expressed as “↑”. The red double arrow solid lines represent DAVC-PGV < 0.50 cm, and the yellow double arrow solid lines represent DAVC-PGV ≥ 0.50 cm. The left DAVC-PGV was 0.63 cm, 0.34 cm, 0.21 cm and ↑ at 0°, 5°, 10°, and 15°, respectively. The right DAVC-PGV was 1.34 cm, 1.37 cm, 1.51 cm and ↑ at 0°, 5°, 10°, and 15°, respectively. AA: Abdominal aorta. IVC: Inferior vena cava