The effect of the reconstruction algorithm for the pulmonary nodule detection under the metal artifact caused by a pacemaker. Issue 24 (12th June 2020)

• Record Type: Journal Article
• Authors: Kikuchi, Noriko; Yanagawa, Masahiro; Enchi, Yukihiro; Nakayama, Akiko; Yoshida, Yuriko; Miyata, Tomo; Hata, Akinori; Tsubamoto, Mitsuko; Honda, Osamu; Tomiyama, Noriyuki
• Other Names: Sun. YX section editor.
• Is Part Of: Medicine. Volume 99:Issue 24(2020)
• Publication Date: 2020-06-12
• Subjects: metal artefacts -- nodule detection -- radiation dose -- reconstruction technique; Medicine -- Periodicals; Medicine -- Periodicals; Médecine -- Périodiques; Geneeskunde; Medicine; Periodicals; Periodicals; 610.5
• DOI: 10.1097/MD.0000000000020579
• Languages: English
• ISSNs: 0025-7974

Abstract

Abstract : Abstract: The aim was to compare the effects of metal artifacts from a pacemaker on pulmonary nodule detection among computed tomography (CT) images reconstructed using filtered back projection (FBP), single-energy metal artifact reduction (SEMAR), and forward-projected model-based iterative reconstruction solution (FIRST). Nine simulated nodules were placed inside a chest phantom with a pacemaker. CT images reconstructed using FBP, SEMAR, and FIRST were acquired at low and standard dose, and were evaluated by 2 independent radiologists. FIRST demonstrated the most significantly improved metal artifact and nodule detection on low dose CT ( P < .0032), except at 10 mA and 5-mm thickness. At standard-dose CT, SEMAR showed the most significant metal artifact reduction ( P < .00001). In terms of nodule detection, no significant differences were observed between FIRST and SEMAR ( P = .161). With a pacemaker present, FIRST showed the best nodule detection ability at low-dose CT and SEMAR is comparable to FIRST at standard dose CT.