title: [3-Dimensional reconstruction of MRI in patients with polyacrylamide hydrogel injection for augmentation mammoplasty].
abstract: OBJECTIVE
  To investigate the effective diagnostic method for the patients with polyacrylamide hydrogen injection for augmentation mammaplasty.
  
  
  METHODS
  MRI scanning (layer thickness 1mm, t2 _ ps3d_ cor alignment) was performed on 23 patients with polyacrylamide hydrogen injection for augmentation mammaplasty. The data were imported into computer and processed. 3D reconstruction and analysis modules were run subsequently to do the volume reconstruction and surface reconstruction to obtain stereoscopic images of the gel and adjacent structures in virtual reality, and to calculate the volume of the hydrogel.
  
  
  RESULTS
  Among the 23 patients (46 breasts), the injected hydrogel with integrity capsule existed in retromammary space with no malposition in 5 cases (10 breasts). The capsule was not integrally formed and hydrogel was separately distributed with irregular edge in 6 patients (12 breasts). The pectoris major space, subcutaneous and gland invasion was found in 11 patients (22 breasts). Small amount of hydrogel sparsely distributed in mammary gland and degenerative muscular tissue in 1 patient (2 breasts) who had received extracting surgery before. The volume of hydrogel ranged from 220.309 ml to 372.371 ml (mean: 306.328 ml) in 22 untreated patients (44 breasts).
  
  
  CONCLUSIONS
  The volume and distribution of hydrogel can be known clearly by 3D MRI reconstruction technique. This feasible technique is helpful in removing the hydrogel completely.
authors.affiliation: Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
authors.forename: Jia-Ming
authors.initials: JM
authors.lastname: Sun
authors.forename: Quan
authors.initials: Q
authors.lastname: Yuan
authors.forename: Ke
authors.initials: K
authors.lastname: Guo
authors.forename: Neng-Qiang
authors.initials: NQ
authors.lastname: Guo
authors.forename: Chong
authors.initials: C
authors.lastname: Peng
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jie-Cong
authors.initials: JC
authors.lastname: Wang
mesh_terms: D000180:Acrylic Resins; D000293:Adolescent; D000328:Adult; D018427:Breast Implants / Q000009:adverse effects; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging / Q000379:methods*; D016462:Mammaplasty / Q000009:adverse effects / Q000379:methods*; D011184:Postoperative Period; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D000180:Acrylic Resins; C016680:polyacrylamide gels