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No. 2D730-148E*O
The acquired 2D ultrasound image is accompanied
with the size information on the 2D
image itself and the positional and directional information
of the position sensor receiver
with respect to the position sensor transmitter.
This information is used to reconstruct a 3D
image.
Therefore,
it is necessary to correct the positional relationship between the position
sensor receiver and the 2D-ultrasound
image using a conversion table called a calibration
matrix. The shape of the transducer
is taken into consideration
when the calibration matrix
is prepared.
Position sensor
Position sensor
Figure 17-6 Positional data
17-4
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