<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'>I have been struggling since long time to see two point source in cardiac SPECT I have designed. <br>I am using one point source in the center, i am using .sin file and reconstructing with MLEM algorithm to see the image, single point source works. Ones I put 2 or 3 points it does not working, I still see one point.<br>I even make a big uniform phantom to see if I can see the uniform phantom, I got the same results. It can not be reconstruction problem, because I am using imagej before I reconstruct the images to see the sinograms. Projections are the same it is like one point source. Can anybody help me please what can it be?<br>Attach please mac file to see the way I put the source.<br><br>Best <br>Regards<br>Eda<br><br> <br> </div></body> </html>