title: MR rectography evaluation of rectoceles with oral gadopentetate dimeglumine and polyethylene glycol solution.
abstract: BACKGROUND
  We assessed the value of magnetic resonance (MR) rectography in diagnosing rectocele by using a combination of oral gadopentetate dimeglumine and polyethylene glycol solutions.
  
  
  METHODS
  T1-weighted, breath-hold, fast low-angle shot sequences were made in 22 patients in resting and straining states in the supine position before and after administration of oral paramagnetic contrast. Twelve patients received polyethylene glycol solution in addition to contrast, and 10 received contrast only. The pubococcygeal line was the reference used for diagnostic measurements. The quality of each sequence was graded. Paired t test, chi-square test, and the Kolmogorov-Smirnov test were applied for statistical analysis.
  
  
  RESULTS
  The results of noncontrast images were inconclusive. There was a statistically significant difference between MR imaging diagnosis of rectocele in patients in the straining position without and with contrast ( p < 0.05), and the difference was more prominent in patients using polyethylene glycol solution ( p < 0.001). Using oral contrast plus polyethylene glycol produced significantly better MR examinations in the resting and straining positions ( p < 0.05).
  
  
  CONCLUSIONS
  The combination of oral contrast and polyethylene glycol solution improves the diagnostic value of MR rectography and is particularly useful when noncontrast examinations are inconclusive.
authors.affiliation: Department of Radiology, Baskent University Faculty of Medicine, Fevzi Cakmak Cad. 10. Sok. No. 45, 06490 Bahcelievler, Ankara, Turkey.
authors.forename: A M
authors.initials: AM
authors.lastname: Agildere
authors.forename: N C
authors.initials: NC
authors.lastname: Tarhan
authors.forename: M H
authors.initials: MH
authors.lastname: Ergeneli
authors.forename: Z
authors.initials: Z
authors.lastname: Yologlu
authors.forename: A
authors.initials: A
authors.lastname: Kurt
authors.forename: S
authors.initials: S
authors.lastname: Akgun
authors.forename: E M
authors.initials: EM
authors.lastname: Kayahan
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D003287:Contrast Media / Q000008:administration & dosage*; D005260:Female; D019786:Gadolinium DTPA / Q000008:administration & dosage*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D011092:Polyethylene Glycols / Q000008:administration & dosage*; D011446:Prospective Studies; D020047:Rectocele / Q000175:diagnosis*
chemical_list: D003287:Contrast Media; D011092:Polyethylene Glycols; D019786:Gadolinium DTPA