Reconstruction for Time-Domain In Vivo EPR 3D Multigradient Oximetric Imaging—A Parallel Processing Perspective

Table 6

Time (seconds) for the oximetry thresholding (the value of “Thresh” is obtained by looking at the noise level in the spin density mesh view plot and is used to get the oxygen profile).

Gradient steps	Computation of 12 (100×100×100) 3D oxygen images, using	Thresh: 0.02	Thresh: 0.01	Thresh: 0.005	Thresh: 0.0
21×21×21	PC	74.73	88.01	119.99	2372.42
21×21×21	Parallel system	20.93	23.66	26.94	224.07
23×23×23	PC	84.17	100.64	123.56	2475.22
23×23×23	Parallel system	23.93	23.69	27.00	225.07
25×25×25	PC	101.31	103.06	130.34	2599.49
25×25×25	Parallel system	24.32	25.12	27.82	227.23