BK Medical bkSpecto, Advanced User'S Manual

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108 Chapter 10 August 2018 bkSpecto Advanced User Guide (16-01642-01)
When you tap 3D , 3D ROI markers (see Fig 10-1) appear in the image area to
indicate the area that will be captured in the 3D data set.
NOTE:
You cannot tap Zoom to activate the 3D ROI box. The Zoom button continues
to work in the normal way for the 2D image.
To move the 3D ROI box to a different part of the image, drag it with the trackpad.
To resize the box (increase or decrease the area covered by the 3D acquisition), tap
the trackpad. Now only one corner is green. Drag this corner to adjust the size of the
box.
3D Capture Settings
You can set various 3D capture settings using the 3D buttons:
•
3D Spacing sets the spacing between frames in mm.
•
3D Distance sets the distance the transducer will travel to acquire the 3D volume.
•
3D Direction sets the direction to L-R (left to right) or R-L (right to left).
•
3D Sweep Mode sets the freehand sweep mode to Untracked Linear or
Untracked Fan .
•
Time sets the duration of the recording.
Imaging Direction
Untracked freehand
Before you acquire an untracked freehand data set, it is essential to select the
appropriate imaging direction so that the 3D volume will be reconstructed correctly.
Be especially careful if you have changed the orientation (right/left or left/right) of
the 2D image (changed its orientation). In this case, the system will not make any
automatic adjustments of orientation before 3D acquisition. The effect of a flipped
2D image on the resulting 3D volume can be confusing, so we recommend that you
do
not change the default orientation of the 2D image before acquiring a 3D data set.
You must select the imaging direction to match the direction that the transducer will
move during acquisition.
NOTE:
If the patient is not lying on his or her back, be very careful when you choose
the imaging direction because the directions are defined relative to a patient lying
face-up.
Acquisition
To start a 3D acquisition:
•
Tap 3D Aquire .
A progress circle appears during acquisition, and a pop-up on the touchscreen allows
you to stop the progressing acquisition.
3D review buttons appear when you have acquired the 3D volume.