[gate-users] Compound Phantom

[Ray Raylman]

I would like to create a phantom consisting of four hot spheres of
different diameter imbedded inside a warm ellipsoid (sphere to ellipsoid
radioactivity
ratio of 8:1).  If I just overlap the sources (encase the spheres within
the ellipsoid), won't some of the activity assigned to the ellipsoid be
present within the spheres?  Is there any way to exclude the ellipsoid
activity from the spheres?  


Thanks, Ray Raylman


Raymond R. Raylman, Ph.D.
Associate Professor/Vice Chair for Research
Dept of Radiology/Box 9236
West Virginia University
Morgantown, WV, 26506
Phone: 304-293-1973