Figure 2.

Images of experimental (right) and simulated (left) SPECT Jaszczak Deluxe phantom acquisition, consisting of six cold spheres and 148 rods, filled with 370MBq ^99mTc. The acquisition parameters were 128 × 128 matrix, 128 views, 1.23 zoom factor, 3.9-mm pixel size, 30 second acquisition time per view using a dual-head camera (E.CAM TM; Siemens Medical Systems). Images were reconstructed by filtered back projection reconstruction using a Butterworth filter with a cut-off frequency of 0.5. The cold rod diameters are from top right clockwise: 4.8, 6.4, 7.9, 9.5, 11.1 and 12.7 mm. Approximately 128 Mcounts were recorded for simulations