1. A method for improving quality in a positron emission tomography image, comprising: normalizing a pixel in a sinogram of a positron emission tomography study, the pixel normalized by applying an equation used on all other pixels of the sinogram; calculating a normalized sinogram from the sinogram as a function of normalizing each pixel in the sinogram; generating a PCA sinogram as a function of performing primary component analysis on the normalized sinogram; and reconstructing the positron emission tomography image as a function of a reconstruction method applied to the PCA sinogram.