title: A self-gating method for time-resolved imaging of nonuniform motion.
abstract: To develop a self-gating method capable of assessing nonuniform motion, e.g., in cardiovascular magnetic resonance imaging of patients with severe arrhythmia, or for imaging of the temporomandibular joint.
  
  
  
  The proposed method allows cyclic motion trajectories with a nonuniform pace by replacing the one-dimensional gating signal of conventional image-based self-gating with a two-dimensional gating matrix. The resulting image quality is compared with conventional self-gating and real-time MRI.
  
  
  
  Nonuniform self-gating resulted in superior image quality compared with conventional self-gating and the feasibility study showed significantly improved image sharpness (P < 0.01). Further, improvements in image quality were shown compared with golden angle radial parallel sparse MRI.
  
  
  
  A new self-gating method was proposed that allows cardiovascular magnetic resonance of arrhythmic patients, which is a common problem in clinical practice. Further, the proposed method enables self-gated imaging of the temporomandibular joint. Magn Reson Med 76:919-925, 2016. © 2015 Wiley Periodicals, Inc.
authors.affiliation: Department of Internal Medicine II, University Hospital of Ulm, Germany.|Sirona Dental Systems, Imaging Systems, Bensheim, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Wundrak
authors.affiliation: Department of Internal Medicine II, University Hospital of Ulm, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Paul
authors.affiliation: Sirona Dental Systems, Imaging Systems, Bensheim, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Ulrici
authors.affiliation: Sirona Dental Systems, Imaging Systems, Bensheim, Germany.
authors.forename: Erich
authors.initials: E
authors.lastname: Hell
authors.affiliation: Department of Oral and Maxillofacial Surgery, University of Ulm, Germany.
authors.forename: Margrit-Ann
authors.initials: MA
authors.lastname: Geibel
authors.affiliation: Department of Internal Medicine II, University Hospital of Ulm, Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Bernhardt
authors.affiliation: Department of Internal Medicine II, University Hospital of Ulm, Germany.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Rottbauer
authors.affiliation: Department of Internal Medicine II, University Hospital of Ulm, Germany.
authors.forename: Volker
authors.initials: V
authors.lastname: Rasche
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D001145:Arrhythmias, Cardiac / Q000000981:diagnostic imaging*; D016477:Artifacts; D055424:Cardiac-Gated Imaging Techniques / Q000379:methods*; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D008297:Male; D009038:Motion; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
keywords: arrhythmia; cardiac; cardiovascular magnetic resonance; cine; self-gating; temporomandibular joint