Authors: Pedro Augusto Gondim Teixeira JeanBaptiste Meyer Cedric Baumann Ariane Raymond François Sirveaux Henry Coudane Alain Blum
Publish Date: 2014/06/10
Volume: 43, Issue: 9, Pages: 1237-1246
Abstract
To compare the image quality of CT with iterative reconstruction alone and in association with projectionbased singleenergy metal artifact reduction SEMAR for the visualization of specific periarticular soft tissue structures in patients with hip prosthesesCT studies from 48 consecutive patients with a hip prosthesis 24 unilateral and 24 bilateral were retrospectively reconstructed using two different methods iterative reconstruction IR alone and IR associated with SEMAR The influence of metallic artifacts on the identification of various periarticular structures was evaluated subjectively by two readers The image quality was compared in patients with unilateral and bilateral prosthesesVisualization of periprosthetic soft tissue was significantly improved by the SEMAR algorithm p 00001 When SEMAR was associated with IR the gluteus minimus and medius tendons obturator internus muscle prostate/uterus and bladder could be seen with medium or high confidence There were no significant differences in image quality between patients with unilateral or bilateral prosthesis when SEMAR was used p 02 This algorithm increased the detection of periarticular masses by 30 Two authors involved in this work myself included PT and AB participate in a nonremunerated research contract with Toshiba Medical systems developer of the algorithm used for metal artifact reduction The other authors have no potential conflicts of interest to disclose
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