<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Hello,</div>
<div>I know that RTK's primary use is the field of a circular trajectory. But if one would</div>
<div>use the the RTK for tomosynthesis the first choice's algorithm would be the</div>
<div>S-ART.</div>
<div> </div>
<div>Following situation. The Focus is fixed. The object only moves in the xy plane and also the</div>
<div>detectors, for instance flat panel detectors. So that a virtually line would always goes from</div>
<div>the focus through the object center and ends in the detector's center.</div>
<div>I wonder how to handle the different geometry settings for this kind of reconstruction.</div>
<div>What I mean is, that with a circular trajector the parameters FOD, FDD and ODD always</div>
<div>remain the same because we are rotationg around an axis. But for the case of planar</div>
<div>tomosynthesis the FOD, FDD will be different from the orthogonal view.</div>
<div>Usually we calculate the physical size of the object based on the FOD and FDD to get sure</div>
<div>that the object fits within the cone.</div>
<div>But now for the case of a planar tomosynthesis do one need to recalculate the object size</div>
<div>so that the object fits into the current cone beam or do one work with the object size calculated</div>
<div>for the center view (orthogonal view, where the original FOD, FDD are given) ?</div>
<div> </div>
<div>I think if I would resize the object for every viewing position this would change a lot for the</div>
<div>reconstruction result as I also change the "ray paths".</div>
<div> </div>
<div>Does anyone has experiences with this kind of reconstruction ?</div>
<div> </div>
<div> </div>
<div>best regards,</div>
<div>Robert C.</div>
<div> </div>
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