GE Voluson S6 Basic User Manual page 225

9.1.2 Principal Scanning Modes
9.1.3 What is Interactive 3D Image Rendering?
Voluson® S6/S8 Basic User Manual
5433669-100 Revision 4
represents the central 2D scan of the volume. The volume scan itself sweeps from one margin
to the other margin of the volume to be acquired.
The VOL BOX frames the Region of Interest (ROI) which will be stored during the volume
sweep. The display shows the actual 2D scan. In 3D, the range of the volume sweep is
indicated by the VolAngle Pictogram, which is displayed at the bottom right of the screen (Vol
Angle). The moving indicator gives information about the position of the B image during the
volume scan. The sweep time varies and depends on the VOL BOX size (depth range, angle)
and the quality (6 positions). The probe must be held steady and in place during the 3D
volume scan. The real time display of the swept B frames allows continual observation of the
scan quality. During the real time 4D scan it is not necessary to hold the probe steady because
of the continuous volume acquisition.
The volume scan is automatically performed by an automatic sweep of the transducer array
inside the housing. The scanned volume is similar to a section of a torus.
Transducer type:
Abdominal Small parts
The 3D Image Rendering is a calculation process to visualize certain 3D structures of a
scanned volume by means of a 2D image. The gray value for each pixel of the 2D image is
calculated from the voxels along the corresponding projection path (analyzing beam) through
the volume. The render (calculation) algorithm surface or transparent mode decides which 3D
structures are visualized.
1. Central 2D scan
2. Start 2D scan
3. Range of VOL
sweep
Transvaginal Transrectal
Volume Mode
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