<div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Hello!<br></div><div dir="ltr"><div>I'm using the RTK geometry and the JosephForwardProjectionImageFilter to generate a rotated DRR from a 3d CT.</div><div>For geometry, I set the outOfPlaneAngle = 90. to rotate the DRR.</div><div>I found that when I set sdd(source to detector distance) = 0, I can easily get the DRR filling up the Image by setting the Image origin and spacing being the same with the origin and spacing of the original CT.</div><div>But when I want the DRR to be like a clinical X-ray which means I need to set the sid and sdd to a specific value, I found that the above Image setting strategy failed to set the DRR filling up the image and also there are some transitions that make the DRR not in the middle.</div><div>Are there any ways to decide the Image origin and spacing using the specific sid and sdd?</div><div>Thank you!</div></div>
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