User`s guide

Imaging Modalities
2D/BMode Imaging
7-42 Revision D.0
The following illustration shows an example of the crossover depth. Biopsy
needles mount on probes at an angle to the probe center line. Some biopsy
guides, for example the C5040, can support more than one needle position. Each
needle position on the guide is marked with its crossover depth. Crossover depth
is the distance from the face of the probe to the point where the needle path
intersects the probe center line.
NOTE The crossover depth is an estimate and does not replace more direct
measurements. Use the crossover depth only to identify the needle position on
the guide and to select the correct crossover depth control setting.
Needle
Path
Probe
Crossover Depth
Center line