METHODS AND MATERIALS FOR THE MEASUREMENT OF SUBJECTIVE AND OBJECTIVE MEASUREMENTS OF IMAGE QUALITY

摘要

The evaluation of medical imaging systems may be performed using both subjective (e.g. high contrast limiting resolution, and low contrast detail detectability), and objective/physical (e. g. characteristic curve, signal-to-noise ratio, modulation transfer function, and Wiener spectra) indices of image quality. For the purposes of Quality Assurance subjective measurements currently have a wide usage in the clinical environment due to the inherent simplicity of the measurement; however, more rigorous objective approaches are gaining acceptability, and represent a paradigm for possible future QA measurements.