Table 5: Comparing filtered back-projection (FBP) runtime (as an application for using the proposed 2D FFT with simultaneous EAR).

3D Density CPU (i7) FPGA + Host PC (i7)
Sec Sec

21.3 sec 19.5 sec
47.5 sec 42.4 sec
94.8 sec 81.3 sec
322.3 sec 275.3 sec
1687.7 sec 1364.4 sec
16463.1 sec 12599.4 sec