Forward-projected Model-based Iterative Reconstruction SoluTion in Temporal Bone Computed Tomography: A Comparison Study of All Reconstruction Modes.

Autor:	Kurokawa R; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Hagiwara A; Department of Radiology, Juntendo University School of Medicine., Nakaya M; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Maeda E; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Yamaguchi H; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Gonoi W; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Sato J; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Nakata K; Department of Radiation Technology, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan., Ino K; Department of Radiation Technology, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan., Ota Y; Division of Neuroradiology, Department of Radiology, Michigan Medicine, Ann Arbor, MI., Kurokawa M; Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku., Baba A; Department of Radiology, The Jikei University School of Medicine., Nyunoya K; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Usui Y; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Tanishima T; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo., Tsushima S; Canon Medical Systems Corporation., Torigoe R; Canon Medical Systems Corporation., Suyama TQ; National Institute of Informatics, Chiyoda-ku, Tokyo, Japan., Abe O; From the Department of Radiology, Graduate School of Medicine, The University of Tokyo.
Jazyk:	angličtina
Zdroj:	Journal of computer assisted tomography [J Comput Assist Tomogr] 2021 Mar-Apr 01; Vol. 45 (2), pp. 308-314.
DOI:	10.1097/RCT.0000000000001119
Abstrakt:	Objective: Identify appropriate reconstruction modes of Forward-projected model-based Iterative Reconstruction SoluTion (FIRST) in temporal bone computed tomography (CT) and investigate the contribution of spatial resolution and noise to the visual assessment. Methods: Sixteen temporal bone CT images were reconstructed. Two blinded radiologists assessed 8 anatomical structures and classified the visual assessment. These visual scores were compared across reconstruction modes among each anatomical structure. Visual scores and contrast-to-noise ratio, noise power spectrum (NPS) at low (NPSLow) and high (NPSHigh) spatial frequencies, and 50% modulation transfer function relationships were evaluated. Results: Visual scores differed significantly for the stapedius muscle and osseous spiral lamina, with CARDIAC SHARP, BONE, and LUNG modes for the osseous spiral lamina scoring highest. Visual scores significantly positively correlated with NPSLow, NPSHigh, and 50% modulation transfer function but negatively with contrast-to-noise ratio. Conclusions: Modes providing higher spatial resolution and lower noise reduction showed an improved visual assessment of CT images reconstructed with FIRST. Competing Interests: This is a collaborative research with Canon Medical Systems Corporation. S.T. and R.T. are employees of Canon Medical Systems Corporation. E.M. and O.A. received honoraria (eg, lecture fee) and research funding from Canon Medical Systems Corporation. J.S. receives research funding from Canon Medical Systems Corporation. All other authors declare no conflict of interest. (Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.)
Databáze:	MEDLINE
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