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Proceedings Paper

A method for modulation transfer function determination from blood vessel profiles measured in computed tomography
Author(s): Y. Nakaya; Y. Kawata; N. Niki; H. Ohmatsu; N. Moriyama
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Paper 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.

Paper Details

Date Published: 3 March 2012
PDF: 6 pages
Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83131I (3 March 2012); doi: 10.1117/12.911030
Show Author Affiliations
Y. Nakaya, Shizuoka Cancer Ctr. (Japan)
Y. Kawata, Univ. of Tokushima (Japan)
N. Niki, Univ. of Tokushima (Japan)
H. Ohmatsu, National Cancer Ctr. Hospital East (Japan)
N. Moriyama, National Cancer Ctr. Research Ctr. for Cancer Prevention and Screening (Japan)

Published in SPIE Proceedings Vol. 8313:
Medical Imaging 2012: Physics of Medical Imaging
Norbert J. Pelc; Robert M. Nishikawa; Bruce R. Whiting, Editor(s)

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