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Radiological Physics and Technology
Published in: Radiological Physics and Technology 2/2008

01-07-2008

Evaluation of the spatial resolution of multiplanar reconstruction images

Authors: Shohei Kudomi, Katsuhiko Ueda, Yasuyuki Ueda, Masateru Kawakubo, Taizo Sanada

Published in: Radiological Physics and Technology | Issue 2/2008

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Abstract

We present a simple method for evaluating the spatial resolution of multi-slice computed tomography (MSCT) multiplanar reconstruction images (MPRs). We scanned a bead phantom to obtain the three-dimensional point spread function (PSF), and bead-centric MPRs were generated. The modulation transfer function (MTF) was calculated from the MPRs via a two-dimensional Fourier transform (2DFFT) of the PSF. The results showed that, when MPRs were reconstructed using axial images less than or equal to a nominal 1.0-mm slice-width with a standard kernel for the abdomen, the MTF in the longitudinal direction (z-direction) was superior to that in the in-plane (x–y plane) direction. It was also found that the arbitrary-angle MTFs of MPRs were between the MTFs of the in-plane and longitudinal directions. It was confirmed that this method can be used to evaluate MPR spatial resolution.
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Metadata
Title
Evaluation of the spatial resolution of multiplanar reconstruction images
Authors
Shohei Kudomi
Katsuhiko Ueda
Yasuyuki Ueda
Masateru Kawakubo
Taizo Sanada
Publication date
01-07-2008
Publisher
Springer Japan
Published in
Radiological Physics and Technology / Issue 2/2008
Print ISSN: 1865-0333
Electronic ISSN: 1865-0341
DOI
https://doi.org/10.1007/s12194-008-0033-2

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