An SPEC image is taken with a field of view (FOV) of 40 cm (in the x-direction). The image is reconstructed in various matrix sizes of (i) 128 × 128, (ii) 256 × 256, and (iii) 512 × 512, each holding 1 million counts. For each matrix size, calculate: (a) the pixel size, sp in x-direction (in mm), (b) the number of counts per pixel, N, and (c) the pixel noise in each image

An SPEC image is taken with a field of view (FOV) of 40 cm (in the x-direction). The image is reconstructed in various matrix sizes of (i) 128 × 128, (ii) 256 × 256, and (iii) 512 × 512, each holding 1 million counts. For each matrix size, calculate: (a) the pixel size, sp in x-direction (in mm), (b) the number of counts per pixel, N, and (c) the pixel noise in each image

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