Fig. 4

Comparison of MATVs from PSF images optimised for diagnostic potential and EARL-compliant PSF₇ images (observer 1). Relationships between MATVs extracted from OSEM reconstructions and PSF or PSF₇ reconstructions, for the 40% isocontour-based methods (a, b) and gradient-based methods (c, d), assessed using Bland–Altman plots