A method for modulation transfer function determination from blood vessel profiles measured in computed tomography

Y. Nakaya; Y. Kawata; N. Niki; H. Ohmatsu; N. Moriyama

doi:10.1117/12.911030

3 March 2012 A method for modulation transfer function determination from blood vessel profiles measured in computed tomography

Y. Nakaya, Y. Kawata, N. Niki, H. Ohmatsu, N. Moriyama

Author Affiliations +

Proceedings Volume 8313, Medical Imaging 2012: Physics of Medical Imaging; 83131I (2012) https://doi.org/10.1117/12.911030
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

The recent CT systems yield high spatial resolution in all directions of volumetric images in clinical routine. The quantitative characterization of the performance of CT systems is important for comparing the effects of different scan and reconstruction parameters, for comparing between different CT systems, and for evaluating the accuracy of size and density measurements of fine details in CT images. This paper presents a method to determine the modulation transfer function (MTF) in the scan plane obtained by CT system from profiles of human anatomical structures such as blood vessel measured by clinical measurement conditions without magnified reconstruction. MTF estimations are performed for cylindrical tube phantoms with three different diameters (1 mm, 2 mm, and 3 mm) injected by solution of contrast material and human blood vessels measured by the clinical measurement conditions. We demonstrate the potential usefulness of the method for estimating the MTF from blood vessel profiles measured in CT systems.

Citation Download Citation

Y. Nakaya, Y. Kawata, N. Niki, H. Ohmatsu, and N. Moriyama "A method for modulation transfer function determination from blood vessel profiles measured in computed tomography", Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83131I (3 March 2012); https://doi.org/10.1117/12.911030

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