Table 1 Notation
From: Research on a bifurcation location algorithm of a drainage tube based on 3D medical images
Symbol | Description |
|---|---|
M1(x1, y1, z1), M2(x2, y2, z2) | The coordinate of the joint point of the optimal external axis and the boundary of the hematoma |
d12 =  ∣ M1M2∣ | The distance from M1 to M2 |
d34 =  ∣ M3M4∣ | The maximum diameter of the vertical surface through M1/2 in the hematoma |
M3(x3, y3, z3), M4(x4, y4, z4) | The coordinates of the endpoints of d34 in the hematoma |
D, d | Ddenotes the diameter of the duct in the main tube; d denotes the diameter of the hole in the subtube |
dO | The distance between the two central points of the holes |
dB | The distance between the two bifurcations |
\( {d}_{B_i} \) | The distance between the main probe tip and the i − th bifurcation-tube probe tip (we define the first subtube to be nearest to the main probe tip) |