<html><body><div style="color:#000; background-color:#fff; font-family:bookman old style, new york, times, serif;font-size:14pt"><div>Hi<br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">I used 3D NCAT phantom(128*128*128 uint16) for SPECT simulation(with gate6.1).</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">It always shows could not open header file NCAT_atn.i33</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">.................</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">Error: Could not open header file 'NCAT_atn.i33</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">.</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">.</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">Error: Could not open header file 'NCAT_act.i33</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">.................</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">i chek 2 suggestions (Panagiotis Papadimitroulas )but not work:</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">1) Try to write in your header file in the line<br> !name of data file := NCAT_act.i33 the whole path of your file, like this:<br> !name of data file := /home/username/NCAT_act.i33 ,or check where is your file. maybe in the data folder,<br>so just write for your path the: data/NCAT_act.i33 (from where you run Gate)<br><br>2) My second suggestion if the above doesn't work, is just to copy the header file from the examples of GATE<br>for voxelized phantoms... And just change there the written parameters with the parameters you have from<br>your header file. Do not add more.. I put here an example for not searching... just copy this and change with<br>your numbers (mostly the appropriate one, like pixel scaling, number of images, matrix size etc..)<br>......................................</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">do you know other way to solve this problem ?!</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;">Thank you!</div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18.67px; font-family: "Bookman Old Style"; background-color: transparent; font-style: normal;"><br></div></div></body></html>