* EXAMPLE 3 * CREATION OF HEAD PHANTOM. GENERATION OF POLYCHROMATIC * PROJECTION DATA. * * CREATE A PHANTOM * GENERATE PROJECTION DATA CREATE EXAMPLE 3 HEAD PHANTOM SPECTRUM POLYCHROMATIC 5 40 10 50 30 60 30 80 20 100 10 OBJECTS SEGM 1.375 -7.5 1.1 0.625 19.2 -0.734 DENS -0.472 -0.288 -0.116 -0.029 SEGM 1.375 -7.5 1.1 4.32 19.21 0.734 DENS 0.472 0.288 0.116 0.029 ELIP 0.0 0.0 8.625 6.4687 90.0 1.0 DENS 0.7 0.5 0.3 0.2 ELIP 0.0 0.0 7.875 5.7187 90.0 -0.737 DENS -0.475 -0.291 -0.118 -0.029 ELIP 0.0 1.5 0.375 0.3 90.0 -0.003 DENS -0.006 -0.002 -0.001 -0.0 SEGM 0.0 -2.25 1.125 0.375 0.0 -0.003 DENS -0.006 -0.002 -0.001 -0.0 SEGM -1.0 3.75 1.0 0.5 135.0 -0.003 DENS -0.006 -0.002 -0.001 0.0 SEGM 1.0 3.75 1.0 0.5 225.0 -0.003 DENS -0.006 -0.002 -0.001 0.0 ELIP 0.675 -0.75 0.225 0.15 140.0 0.025 DENS 0.016 0.01 0.008 0.008 ELIP 0.75 1.5 0.375 0.225 50.0 0.005 DENS 0.004 0.004 0.006 0.005 TRIA 5.025 3.75 1.125 0.5 110.75 0.737 DENS 0.475 0.291 0.118 0.029 TRIA -5.025 3.75 1.125 0.5 -110.75 0.737 DENS 0.475 0.291 0.118 0.029 LAST 1.0 PHANTOM AVERAGE 3 145 0.123 RAYSUM AVERAGE 5 1 1 1 1 1 GEOMETRY DIVERGENT ARC 78.0 110.0 RAYS USER 165 0.213 ANGLE 144 EQUAL SPACING 0.0 358.5 MEASUREMENT NOISY QUANTUM 10000000.0 360.0 CALIBRATION 2 SCATTER 0.24 0.4445 SEED 1 BACKGROUND 0.0 0.0 0.0 0.0 0.0 RUN * *PICTURE RECONSTRUCTION causes error "keyword - rays - missing" *PICTURE RECONSTRUCTION 145 0.123 PICTURE TEST * PROJECTION REAL * EXECUTE DCON EXAMPLE 1 DIVERGENT CONVOLUTION FROM 144 VIEWS * -1 1 -1 0.5 0 2 1 -1 1.0 0 BANDLIMITING * LINES SCALE 100.0 COLUMN 16 1 * PUNCH PHANTOM 1 * END