title: Current artefacts in cardiac and chest magnetic resonance imaging: tips and tricks.
abstract: Currently MRI is extensively used for the evaluation of cardiovascular and thoracic disorders because of the well-established advantages that include use of non-ionizing radiation, good contrast and high spatial resolution. Despite the advantages of this technique, numerous categories of artefacts are frequently encountered. They may be related to the scanner hardware or software functionalities, environmental factors or the human body itself. In particular, some artefacts may be exacerbated with high-field-strength MR machines (e.g. 3 T). Cardiac imaging poses specific challenges with respect to breath-holding and cardiac motion. In addition, new cardiac MR-conditional devices may also be responsible for peculiar artefacts. The image quality may thus be impaired and give rise to a misdiagnosis. Knowledge of acquisition and reconstruction techniques is required to understand and recognize the nature of these artefacts. This article will focus on the origin and appearance of the most common artefacts encountered in cardiac and chest MRI along with possible correcting methods to avoid or reduce them.
authors.affiliation: 1 Radiodiagnostic and Interventional Radiology Department, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Khalid
authors.initials: K
authors.lastname: Alfudhili
authors.affiliation: 2 Division of Cardiology, Department of Internal Medicine and Cardiac MR Center of the CHUV-University Hospital, Lausanne, Switzerland.
authors.forename: Pier G
authors.initials: PG
authors.lastname: Masci
authors.affiliation: 1 Radiodiagnostic and Interventional Radiology Department, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Jean
authors.initials: J
authors.lastname: Delacoste
authors.affiliation: 1 Radiodiagnostic and Interventional Radiology Department, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Jean-B
authors.initials: JB
authors.lastname: Ledoux
authors.affiliation: 1 Radiodiagnostic and Interventional Radiology Department, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Grégoire
authors.initials: G
authors.lastname: Berchier
authors.affiliation: 1 Radiodiagnostic and Interventional Radiology Department, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Vincent
authors.initials: V
authors.lastname: Dunet
authors.affiliation: 1 Radiodiagnostic and Interventional Radiology Department, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Salah D
authors.initials: SD
authors.lastname: Qanadli
authors.affiliation: 2 Division of Cardiology, Department of Internal Medicine and Cardiac MR Center of the CHUV-University Hospital, Lausanne, Switzerland.
authors.forename: Juerg
authors.initials: J
authors.lastname: Schwitter
authors.affiliation: 1 Radiodiagnostic and Interventional Radiology Department, Lausanne University Hospital, Lausanne, Switzerland.
authors.forename: Catherine
authors.initials: C
authors.lastname: Beigelman-Aubry
mesh_terms: D016477:Artifacts; D006331:Heart Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008670:Metals; D009038:Motion; D015588:Observer Variation; D056888:Patient Positioning / Q000379:methods*; D019736:Prostheses and Implants; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013896:Thoracic Diseases / Q000000981:diagnostic imaging*
chemical_list: D008670:Metals