FIG. 7.

Intensity profiles of the selected lines (b), (c), and (f) shown in Fig. 6(I) computed over the reference image, three original scans (axial, coronal, and sagittal), and five reconstructed scans using SRR in image, frequency, and wavelet domains. The reference image intensity profile (black) shows the sharpest changes over actual image edges in all graphs; and the reconstructions normally follow it more closely than the original scans. The statistical analysis of MAE of intensity values between all lines and the reference (shown in Fig. 6) indicates that all SRR techniques resulted in improvements in intensity profiles compared to the original scans. This analysis also shows that image-based SRR performed slightly better than the other techniques, so was chosen to study partial voluming effect and its reduction in our neuroimaging application.