Table 2.
The number and frequency of VBs in the slice at different heights of the BN.
| Slice Position | BN Position | Number | Frequency | ||||
|---|---|---|---|---|---|---|---|
| Culm | Branch | Total | Culm (/mm²) | Branch (/mm²) | |||
| AVB | TVB | ||||||
| Slice 0 | the bottom of the BN | 521 | 521 | 7.15 | |||
| Slice 50 | the lower end of the diaphragm | 519 | 17 | 536 | 6.87 | ||
| Slice110 | near the sheath scar | 514 | 40 | 554 | 6.62 | ||
| Slice 300 | the upper end of the diaphragm | 497 | 130 | 627 | 6.46 | ||
| Slice 385 | the medullary cavity | 495 | 108 | 603 | 5.39 | ||
| Slice 600 | the lower end of the nodal ridge | 496 | 66 | 562 | 3.21 | 18.9 | |
| Slice 872 | the nodal ridge | 499 | 63 | 562 | 2.67 | 30.8 | |
| Slice 1292 | the top of the BN | 497 | 3.63 | ||||