Table 1.

The analysis of variance of AVBs at different heights.

Slice position	BN position	radial length (mm)	Chord length (mm)
Slice 0	the bottom of the BN	0.43 ± 0.05f	0.27 ± 0.04bcd
Slice 50	the lower end of the diaphragm	0.45 ± 0.05fg	0.29 ± 0.03d
Slice110	near the sheath scar	0.47 ± 0.05g	0.29 ± 0.04cd
Slice 300	the upper end of the diaphragm	0.43 ± 0.06f	0.25 ± 0.04ab
Slice 385	the medullary cavity	0.44 ± 0.06g	0.24 ± 0.03a
Slice 600	the lower end of the nodal ridge	0.61 ± 0.17h	0.27 ± 0.05bc
Slice 872	the nodal ridge	0.81 ± 0.14i	0.40 ± 0.08e
Slice 1292	the top of the BN	0.47 ± 0.14g	0.27 ± 0.06bcd

No significant difference is observed between groups with the same letter in the table, and vice versa. (Duncan’s test, at 5% level).