A practical method to measure the MTF of CT scanners

ArticleinMedical Physics 9(5):758-60 · September 1982with268 Reads
Impact Factor: 2.64 · DOI: 10.1118/1.595124 · Source: PubMed


    A method has been devised which enables the modulation transfer function (MTF) of computerized tomographic (CT) scanners to be simply and rapidly determined. The method relies upon the measurement of the standard deviation of the pixel values within the image of cyclic bar patterns. The method is shown to produce results which are indistinguishable from those derived by less practical conventional methods.