title: Comparison of 3D and 2D FSE T2-weighted MRI in the diagnosis of deep pelvic endometriosis: preliminary results.
abstract: OBJECTIVE
  To evaluate image quality and diagnostic accuracy of two- (2D) and three-dimensional (3D) T2-weighted magnetic resonance imaging (MRI) for the evaluation of deep infiltrating endometriosis (DIE).
  
  
  METHODS
  One hundred and ten consecutive patients with suspicion of endometriosis were recruited at two institutions over a 5-month period. Twenty-three women underwent surgery, 18 had DIE at histology. Two readers independently evaluated 3D and 2D MRI for image quality and diagnosis of DIE. Descriptive analysis, chi-square test for categorical or nominal variables, McNemar test for comparison between 3D and 2D T2-weighted MRI, and weighted "statistics" for intra- and interobserver agreement were used for statistical analysis.
  
  
  RESULTS
  Both readers found that 3D yielded significantly lower image quality than 2D MRI (p < 0.0001). Acquisition time for 3D was significantly shorter than 2D MRI (p < 0.01). 3D offered similar accuracy to diagnose DIE compared to 2D MRI. For all locations of endometriosis, a high or variable intra-observer agreement was observed for reader 1 and 2, respectively.
  
  
  CONCLUSIONS
  Despite a lower overall image quality, 3D provides significant time saving and similar accuracy than multiplanar 2D MRI in the diagnosis of specific DIE locations.
authors: Department of Radiology, Tenon Hospital, Assistance Publique - Hôpitaux de Paris (AP-HP), Paris, France. marc.bazot@tnn.aphp.fr
authors: M
authors: M
authors: Bazot
authors: A
authors: A
authors: Stivalet
authors: E
authors: E
authors: Daraï
authors: C
authors: C
authors: Coudray
authors: I
authors: I
authors: Thomassin-Naggara
authors: E
authors: E
authors: Poncelet
mesh_terms: D000328:Adult; D003108:Colonic Diseases / Q000175:diagnosis; D004312:Douglas' Pouch; D004715:Endometriosis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods* / Q000592:standards; D008875:Middle Aged; D015588:Observer Variation; D010388:Pelvis; D010532:Peritoneal Diseases / Q000175:diagnosis; D012680:Sensitivity and Specificity; D001745:Urinary Bladder Diseases / Q000175:diagnosis; D014591:Uterine Diseases / Q000175:diagnosis; D014623:Vaginal Diseases / Q000175:diagnosis; D055815:Young Adult