Stic (Spatio-Temporal Image Correlation); Vci - Volume Contrast Imaging; Tui - Tomographic Ultrasound Imaging - GE Voluson 730Pro Service Manual

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EDICAL YSTEMS
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STIC (Spatio-Temporal Image Correlation)*

With this acquisition method the fetal heart or an artery can be visualized in 4D.
It is not a Real Time 4D technique, but a post processed 3D acquisition.
In order to archive a good result, try to adjust the size of the volume box and the sweep angle to be as
small as possible. The longer the acquisition time, the better the spatial resolution will be.
A good STIC, STIC CFM (2D+CFM) or STIC PD (2D+PD) data set shows a regular and synchronous
pumping of the fetal heart or of an artery.
The user must be sure that there is minimal movement of the participating persons (e.g., mother and
fetus), and that the probe is held absolutely still throughout the acquisition period. Movement will cause
a failure of the acquisition. The acquired images are post processed to calculate a 4D Volume Cine
sequence. Please make sure that the borders of the fetal heart or the artery are smooth and there are
no sudden discontinuities. If the user (trained operator) clearly recognizes a disturbance during the
acquisition period, the acquisition has to be cancelled.
• STIC - Fetal Cardio is only available on RAB & RIC probes in the OB/GYN application.
• STIC - Vascular is only available on the RSP probe in the Peripheral Vascular application.
BT Version: The STIC Option is only available at systems that were upgraded to BT´05 (SW 5.x.x).
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VCI - Volume Contrast Imaging*

Volume Contrast Imaging utilizes 4D transducers to automatically scan multiple adjacent slices and
delivers a real-time display of the ROI.
This image results from a special rendering mode consisting of texture and transparency information.
VCI improves the contrast resolution and therefore facilitates finding of diffuse lesions in organs.
VCI has more information (from multiple slices) and is of advantage in gaining contrast due to improved
signal/noise ratio.
Static VCI is a part of the VCI option, which allow to apply the contrast enhancing VCI method to 3D
data sets after the acquisition.
BT Version: The VCI Option is only available at systems that were upgraded to BT´05 (SW 5.x.x).
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TUI - Tomographic Ultrasound Imaging*

TUI is a new visualisation mode for 3D and 4D data sets. The data is presented as slices through the
data set which are parallel to each other. An overview image, which is orthogonal to the parallel slices,
shows which parts of the volume are displayed in the parallel planes. This method of visualisation is
consistent with the way other medical systems such as CT or MRI, present the data to the user.
The distance between the different planes can be adjusted to the requirements of the given data set.
In addition it is possible to set the number of planes. The planes and the overview image can also be
printed to a DICOM printer, for easier comparison of the ultrasound data with CT and/or MRI data.
BT Version: The TUI Option is only available at systems that were upgraded to BT´05 (SW 5.x.x).
RETZTECHNIK
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EVISION
Chapter 5 - Components and Functions (Theory)
DRAFT V
OLUSON
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ERVICE ANUAL
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