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Proceedings Paper

Scatter correction for multi-slice CT system
Author(s): Yang Wang; Karl Stierstorfer; Martin Petersilka; Michael Grasruck; Yi Tian
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Paper Abstract

Scatter radiation in multi-slice CT system nowadays is playing a more and more important role, as the slice number is getting larger and larger, e.g. from 16 to 64 and even more. Scatter radiation may downgrade image quality e.g. create inhomogeneity and decrease the image contrast. Although in current multi-slice CT, anti-scatter collimation is widely used to reduce the scatter radiation received, as the detector is getting wider, its efficiency is getting weaker. Although beam hardening correction can somehow guarantee image homogeneity, as beam hardening effect and scatter radiation have different physical origin, a delegated scatter correction algorithm is desired. In this paper, we would like to propose a scatter correction algorithm working during data pre-processing before image reconstruction. After we implemented this algorithm in Siemens latest released Somatom Go. CT system, we obtain good image quality especially under certain clinical cases.

Paper Details

Date Published: 9 March 2018
PDF: 10 pages
Proc. SPIE 10573, Medical Imaging 2018: Physics of Medical Imaging, 105733K (9 March 2018); doi: 10.1117/12.2293117
Show Author Affiliations
Yang Wang, Shanghai Siemens Medical Equipment Ltd. (China)
Karl Stierstorfer, Siemens Healthcare GmbH (Germany)
Martin Petersilka, Siemens Healthcare GmbH (Germany)
Michael Grasruck, Siemens Healthcare GmbH (Germany)
Yi Tian, Shanghai Siemens Medical Equipment Ltd. (China)

Published in SPIE Proceedings Vol. 10573:
Medical Imaging 2018: Physics of Medical Imaging
Joseph Y. Lo; Taly Gilat Schmidt; Guang-Hong Chen, Editor(s)

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