GE Healthcare StarMap 4.0 - Manual (Page 2)

Background
Images are typically taken of the liver
or heart when suspicion of iron
burden is present. If present, the iron
creates a susceptibility artifact in the
organ. The later echoes of the
StarMap acquisition pulse sequence
demonstrate a more rapid decline
than normal tissue in the presence of
iron.
TE =2.2 ms (top) and TE = 6.6 ms
(bottom) images
from an eight echo StarMap
acquisition demonstrating
heterogeneous iron in the liver.
Features
• Program includes an advisory
panel to guide you through each
step of analysis.
Superimpose R2* color maps to
display areas within the anatomy of
interest that exhibit R2* values.
the region of interest drawn
on the cardiac septum.
• Customizable macros allow for
patient-specific reports with a
mouse click.
• Archive reports or cine images in
DICOM format for view on any
DICOM viewer.
System Requirements
• GE Healthcare Discovery* MR750
3.0T or Signa* HDxt 1.5T or 3.0T
MRI scanner
• AW 4.2P or above.
Indications for Use
ReportCARD StarMap analysis
provides the user with the ability to
analyze cardiac multi-echo fast
gradient echo data sets. The signal
decay curve of regions of interest
can be plotted and fit to the T2star
equation to help assess iron
overload. Color maps can also be
generated and displayed on the
image to assist in the visualization of
the data.
Regulatory Compliance
This product complies with the
European CE marking regulation
following Medical Devices Directive:
Directive 93/42/EEC.
R2* color map superimposed
on image. Color scale in Hertz
displayed on right.
• Draw ROIs in any area to display
the T2* decay curve for pixels
within that area. Multiple regions of
interest (ROIs) can be drawn on any
image.
• T2* times (in ms) or R2* values (in
Hz) are calculated for pixels within
each placed region of interest (ROI)
based on an iterative T2*
calculation algorithm. Input scaling
factors and a result in mg/g of
hepatic iron is displayed.
Cardiac T2* results from
© 2012 General Electric Company.
All rights reserved. Data subject to change.
GE and GE Monogram are trademarks of General Electric Company.
* Trademark of General Electric Company.