NDLI: CT image reconstruction on Intel Larrabee using half precision floating-point values

Content Provider	IEEE Xplore Digital Library
Author	Maass, C. Baer, M. Kachelriess, M.
Copyright Year	2009
Description	Author affiliation: Institute of Medical Physics (IMP), University of Erlangen- Nürnberg, Henkestr. 91, 91052 Erlangen (Maass, C.; Baer, M.; Kachelriess, M.)
Abstract	Computed tomography is a highly quantitative modality where the data values processed are of a high dynamic range and therefore computing CT images requires high accuracy and high precision during all processing steps. Nevertheless, memory bandwidth is one of the major bottlenecks in today's reconstruction algorithms and it would speed up the reconstruction process to represent a datum with only 16 bit instead of 32 bit. Intel's new Larrabee x86 architecture offers a promising processing of the half precision floating-point value that has the potential to be useful for CT image reconstruction. This study evaluates the image quality of CT image reconstruction based on such half values and compares the results to the standard case of using float values. Our findings are that it is possible to apply half precision data for rawdata and reconstructed volume if some conditions hold.
Starting Page	4048
Ending Page	4053
File Size	2170086
Page Count	6
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402423
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computed tomography Image reconstruction Image quality Hardware Dynamic range Bandwidth Reconstruction algorithms Nuclear and plasma sciences Computer architecture Convolution Larrabee CT Reconstruction Image Quality Fast Reconstruction
Content Type	Text
Resource Type	Article

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