title: High-spatial- and high-temporal-resolution dynamic contrast-enhanced MR breast imaging with sweep imaging with Fourier transformation: a pilot study.
abstract: OBJECTIVE
  To report the results of sweep imaging with Fourier transformation (SWIFT) magnetic resonance (MR) imaging for diagnostic breast imaging.
  
  
  METHODS
  Informed consent was obtained from all participants under one of two institutional review board-approved, HIPAA-compliant protocols. Twelve female patients (age range, 19-54 years; mean age, 41.2 years) and eight normal control subjects (age range, 22-56 years; mean age, 43.2 years) enrolled and completed the study from January 28, 2011, to March 5, 2013. Patients had previous lesions that were Breast Imaging Reporting and Data System 4 and 5 based on mammography and/or ultrasonographic imaging. Contrast-enhanced SWIFT imaging was completed by using a 4-T research MR imaging system. Noncontrast studies were completed in the normal control subjects. One of two sized single-breast SWIFT-compatible transceiver coils was used for nine patients and five controls. Three patients and five control subjects used a SWIFT-compatible dual breast coil. Temporal resolution was 5.9-7.5 seconds. Spatial resolution was 1.00 mm isotropic, with later examinations at 0.67 mm isotropic, and dual breast at 1.00 mm or 0.75 mm isotropic resolution.
  
  
  RESULTS
  Two nonblinded breast radiologists reported SWIFT image findings of normal breast tissue, benign fibroadenomas (six of six lesions), and malignant lesions (10 of 12 lesions) concordant with other imaging modalities and pathologic reports. Two lesions in two patients were not visualized because of coil field of view. The images yielded by SWIFT showed the presence and extent of known breast lesions.
  
  
  CONCLUSIONS
  The SWIFT technique could become an important addition to breast imaging modalities because it provides high spatial resolution at all points during the dynamic contrast-enhanced examination.
authors.affiliation: From the Center for Magnetic Resonance Research, Department of Radiology, Medical School, University of Minnesota, 2021 6th St SE, Room 2-158, Minneapolis, MN 55455 (C.A.C., D.I., A.L.S., C.J.S., D.H., L.I.E., M.G.); Medical School, University of Minnesota, Minneapolis, Minn (J.C.B.); Department of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minn (L.E.E.); and Breast Center, Department of Radiology, Medical School, University of Minnesota, Minneapolis, Minn (M.T.N.).
authors.forename: Curtis A
authors.initials: CA
authors.lastname: Corum
authors.forename: John C
authors.initials: JC
authors.lastname: Benson
authors.forename: Djaudat
authors.initials: D
authors.lastname: Idiyatullin
authors.forename: Angela L
authors.initials: AL
authors.lastname: Snyder
authors.forename: Carl J
authors.initials: CJ
authors.lastname: Snyder
authors.forename: Diane
authors.initials: D
authors.lastname: Hutter
authors.forename: Lenore I
authors.initials: LI
authors.lastname: Everson
authors.forename: Lynn E
authors.initials: LE
authors.lastname: Eberly
authors.forename: Michael T
authors.initials: MT
authors.lastname: Nelson
authors.forename: Michael
authors.initials: M
authors.lastname: Garwood
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000175:diagnosis*; D003287:Contrast Media; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D010865:Pilot Projects; D055815:Young Adult
chemical_list: D003287:Contrast Media