Fig. 7

Matrix size analysis. The normal pituitary phantom (A–E) and the pituitary tumor phantoms with an 8:1 ratio (2 mm—G–K, 4 mm—L–P and 6 mm—Q–U) are shown following reconstruction using a 128 × 128 matrix size (columns labeled ‘AC TOF PSF 128’) and using a 256 × 256 matrix size (columns labeled ‘AC TOF PSF 256’). To highlight the effect the images are displayed with and without visual interpolation (uppermost column headings). The signal profiles along the horizontal cross-hair are shown in the column labeled profiles. The 128 × 128 and 256 × 256 matrix profiles are shown as yellow and gray lines, respectively