title: TrueFisp versus HASTE sequences in 3T cine MRI: Evaluation of image quality during phonation in patients with velopharyngeal insufficiency.
abstract: OBJECTIVE
  To evaluate the image quality of two fast dynamic magnetic resonance imaging (MRI) sequences: True fast imaging with steady state precession (TrueFisp) was compared with half-Fourier acquired single turbo-spin-echo (HASTE) sequence for the characterization of velopharyngeal insufficiency (VPI) in repaired cleft palate patients.
  
  
  METHODS
  Twenty-two patients (10 female and 12 male; mean age, 17.7 ± 10.6 years; range, 9-31) with suspected VPI underwent 3-T MRI using TrueFisp and HASTE sequences. Imaging was performed in the sagittal plane at rest and during phonation of "ee" and "k" to assess the velum, tongue, posterior pharyngeal wall and a potential VP closure. The results were analysed independently by one radiologist and one orthodontist.
  
  
  RESULTS
  HASTE performed better than TrueFisp for all evaluated items, except the tongue evaluation by the orthodontist during phonation of "k" and "ee". A statistically significant difference in favour of HASTE was observed in assessing the velum at rest and during phonation of "k" and "ee", and also in assessing VP closure in both raters (p < 0.05). TrueFisp imaging was twice as fast as HASTE (0.36 vs. 0.75 s/image).
  
  
  CONCLUSIONS
  Dynamic HASTE images were of superior quality to those obtained with TrueFisp, although TrueFisp imaging was twice as fast.
  
  
  CONCLUSIONS
  • Dynamic MRI is an invaluable tool for diagnosing VPI. • Dynamic HASTE images were of superior quality to those obtained with TrueFisp. • TrueFisp imaging was twice as fast as HASTE imaging.
authors.affiliation: Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, A-1090, Vienna, Austria. christiane.kulinna-cosentini@meduniwien.ac.at.
authors.forename: Christiane
authors.initials: C
authors.lastname: Kulinna-Cosentini
authors.affiliation: Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, A-1090, Vienna, Austria.
authors.forename: Christian
authors.initials: C
authors.lastname: Czerny
authors.affiliation: Department of Cranio-, Maxillofacial and Oral Surgery, Medical University Vienna, Vienna, Austria.
authors.forename: Arnulf
authors.initials: A
authors.lastname: Baumann
authors.affiliation: Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Waehringer Guertel 18-20, A-1090, Vienna, Austria.
authors.forename: Michael
authors.initials: M
authors.lastname: Weber
authors.affiliation: Department of Cranio-, Maxillofacial and Oral Surgery, Medical University Vienna, Vienna, Austria.
authors.forename: Klaus
authors.initials: K
authors.lastname: Sinko
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006801:Humans; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D008297:Male; D010699:Phonation / Q000502:physiology*; D011446:Prospective Studies; D015203:Reproducibility of Results; D014681:Velopharyngeal Insufficiency / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D055815:Young Adult
keywords: Cleft palate; HASTE; Magnetic resonance imaging; Phonation; TrueFisp; Velopharyngeal insufficiency