title: Heart-rate dependent improvement in image quality and diagnostic accuracy of coronary computed tomographic angiography by novel intracycle motion correction algorithm.
abstract: BACKGROUND
  To determine the effect of a novel intracycle motion correction algorithm (MCA) on diagnostic accuracy of coronary computed tomographic angiography.
  
  
  METHODS
  Coronary artery phantom models were scanned at static and heart rate (HR) simulation of 60-100 beat/min and reconstructed with a conventional algorithm and MCA.
  
  
  RESULTS
  Among 144 coronary segments, improvements in image interpretability, quality, and diagnostic accuracy by MCA were observed for HRs of 80 and 100 (P<.05 for all), but not for HR of 60.
  
  
  CONCLUSIONS
  Novel intracycle MCA demonstrates improved HR-dependent image interpretability, and quality and accuracy, particularly at higher HRs.
authors: Department of Radiology, NewYork-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA; Division of Cardiology, Severance Cardiovascular Hospital and Severance Biomedical Science Institute, Yonsei University College of Medicine, Yonsei University Health System, Seoul, South Korea.
authors: Iksung
authors: I
authors: Cho
authors: Department of Radiology, NewYork-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA.
authors: Kimberly
authors: K
authors: Elmore
authors: Department of Radiology, NewYork-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA.
authors: Bríain
authors: B
authors: Ó Hartaigh
authors: Department of Radiology, NewYork-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA.
authors: Josh
authors: J
authors: Schulman-Marcus
authors: Departments of Imaging and Medicine, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
authors: Heidi
authors: H
authors: Granser
authors: Department of Radiology, NewYork-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA.
authors: Valentina
authors: V
authors: Valenti
authors: Department of Radiology, NewYork-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA.
authors: Guanglei
authors: G
authors: Xiong
authors: CT and Nuclear Medicine Departments, Diagnóstico Maipú, Buenos Aires, Argentina.
authors: Patricia M
authors: PM
authors: Carrascosa
authors: Department of Radiology, NewYork-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA. Electronic address: jkm2001@med.cornell.edu.
authors: James K
authors: JK
authors: Min
mesh_terms: D000465:Algorithms; D016477:Artifacts; D017023:Coronary Angiography / Q000379:methods* / Q000592:standards*; D006339:Heart Rate; D006801:Humans; D009038:Motion; D019047:Phantoms, Imaging; D015203:Reproducibility of Results
keywords: Coronary artery disease; Coronary computed tomographic angiography; Motion artifact; Motion correction algorithm
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