title: Silicone breast implant rupture: comparison between three-point Dixon and fast spin-echo MR imaging.
abstract: OBJECTIVE
  This study was designed to compare the three-point Dixon technique with our present MR protocol incorporating T2-weighted fast spin echo and fast spin echo with water suppression to detect ruptured silicone breast implants.
  
  
  METHODS
  Eighty-two symptomatic women with silicone breast implants were examined with both the three-point Dixon technique and fast spin-echo MR sequences. Of these patients, 41 had surgery to remove their implants. Four radiologists reviewed the images from only those patients who had surgery and graded each for rupture by using a scale of 1-5. Receiver-operating-characteristic analysis was performed.
  
  
  RESULTS
  Of 81 implants removed, 18 were ruptured. Silicone implant ruptures were identified more frequently on the fast spin-echo sequence than on the three-point Dixon sequence, with areas under the ROC curves of .95 and .84, respectively. Although the difference was not statistically significant, the sensitivity for detecting silicone implant rupture was 89% for the fast spin-echo sequence and 61% for the three-point Dixon sequence. The specificity was 97% for both sequences.
  
  
  CONCLUSIONS
  Silicone implant ruptures were detected more frequently with fast spin-echo MR sequences than with the three-point Dixon technique, although the difference was not significant. The greater spatial resolution used for the fast spin-echo sequence partially accounts for the difference in detection of implant ruptures in this study.
authors.affiliation: Iris Cantor Center for Breast Imaging, Department of Radiological Sciences, University of California, Medical Center, Los Angeles 90024.
authors.forename: D P
authors.initials: DP
authors.lastname: Gorczyca
authors.forename: E
authors.initials: E
authors.lastname: Schneider
authors.forename: N D
authors.initials: ND
authors.lastname: DeBruhl
authors.forename: T K
authors.initials: TK
authors.lastname: Foo
authors.forename: C Y
authors.initials: CY
authors.lastname: Ahn
authors.forename: J W
authors.initials: JW
authors.lastname: Sayre
authors.forename: W W
authors.initials: WW
authors.lastname: Shaw
authors.forename: L W
authors.initials: LW
authors.lastname: Bassett
mesh_terms: D001940:Breast / Q000473:pathology*; D004868:Equipment Failure; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D016462:Mammaplasty; D008875:Middle Aged; D019736:Prostheses and Implants / Q000009:adverse effects*; D012372:ROC Curve; D012680:Sensitivity and Specificity; D012828:Silicones
chemical_list: D012828:Silicones