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Peer-Reviewed Publication
Med Phys2022;49(1):186-200.January 1, 2022Journal Article

Noise reduction profile: A new method for evaluation of noise reduction techniques in CT.

Akira Hasegawa1,2, Toshihiro Ishihara1, M Allan Thomas3, Tinsu Pan3
1Department of Radiological Technology, National Cancer Center Japan, Tokyo, Japan.
2AlgoMedica, Inc., Sunnyvale, California, USA.
3Department of Imaging Physics, M.D. Anderson Cancer Center, University of Texas, Houston, Texas, USA.
PubMed PMC DOI PDF

Abstract

PURPOSE: Noise power spectrum (NPS) is a commonly used performance metric to evaluate noise-reduction techniques (NRT) in imaging systems. The images reconstructed with and without an NRT can be compared via their NPS to better understand the NRT's effects on image noise. However, when comparing NPSs, simple visual assessments or a comparison of NPS peaks or medians are often used. These assessmen…

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