Feasibility of Low-radiation-dose CT for Abdominal Examinations with Hybrid Iterative Reconstruction Algorithm: Low-contrast Phantom Study

Overview

Journal Radiol Phys Technol

Specialties Biophysics
Biotechnology
Radiology

Date 2013 Jan 10

PMID 23299614

Citations 3

Authors

Masatoshi Kondo

Masamitsu Hatakenaka

Ko Higuchi

Taisuke Fujioka

Takashi Shirasaka

Yasuhiko Nakamura

Katsumasa Nakamura

Takashi Yoshiura

Hiroshi Honda

Affiliations

Soon will be listed here.

Abstract

Our purpose in this study was to evaluate the image quality of low-radiation-dose CT using hybrid iterative reconstruction (HIR), and to compare the results with those of filtered back projection (FBP) at routine doses. We measured the mean values and standard deviation of the CT numbers within and outside a 15-mm low-contrast object cylinder at 1.0% contrast level. The noise reduction levels of the HIR were 1 (weak) to 7 (strong). Visual inspection of the low-contrast detectability was done by six radiologic technologists. The low-contrast detectability of the cylinder at the 1.0% contrast level with HIR at all mAs levels was equal to that obtained with FBP, and thus the use of HIR did not result in any improvement of low-contrast detectability.

Citing Articles

Estimating subjective evaluation of low-contrast resolution using convolutional neural networks.

Doi Y, Teramoto A, Yamada A, Kobayashi M, Saito K, Fujita H Phys Eng Sci Med. 2021; 44(4):1285-1296.

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Comparisons of Hounsfield Unit Linearity between Images Reconstructed using an Adaptive Iterative Dose Reduction (AIDR) and a Filter Back-Projection (FBP) Techniques.

I S, C A, H S, P T, T F J Biomed Phys Eng. 2020; 10(2):215-224.

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Impact of hybrid iterative reconstruction on unenhanced liver CT.

Kondo M, Nishie A, Fujita N, Morita K, Shirasaka T, Arimura H Br J Radiol. 2016; 90(1070):20150670.

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