title: Changes of normal appearing optic nerve head on diffusion-weighted imaging in patients with diabetic retinopathy.
abstract: OBJECTIVE
  To investigate whether there is any change by measuring ADC values particularly of the optic nerve head (ONH) in patients with diabetic retinopathy (DR).
  
  
  METHODS
  ADC values at the ONHs was measured in 56 patients and 68 controls.
  
  
  RESULTS
  ADC values of ONHs were significantly higher in patients with DR compared to controls (p=0.011). ADC values in patients with macular edema were higher than those without macular edema (p=0.017).
  
  
  CONCLUSIONS
  DWI of ONHs can be useful in cases where it is difficult to assess macular edema during fundus examination, especially in diabetic patients with cataract.
authors.affiliation: Department of Radiology, University of Kirikkale, Faculty of Medicine, Kirikkale, Turkey. Electronic address: sevyil2003@yahoo.com.
authors.forename: Sevda
authors.initials: S
authors.lastname: Yılmaz
authors.affiliation: Department of Ophthalmology, University of Kirikkale, Faculty of Medicine, Kirikkale, Turkey. Electronic address: erhanyumusak@yahoo.com.
authors.forename: Erhan
authors.initials: E
authors.lastname: Yumusak
authors.affiliation: Department of Radiology, University of Kirikkale, Faculty of Medicine, Kirikkale, Turkey. Electronic address: vedoctor@hotmail.com.
authors.forename: Veysel
authors.initials: V
authors.lastname: Burulday
mesh_terms: D000328:Adult; D003930:Diabetic Retinopathy / Q000000981:diagnostic imaging*; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000000981:diagnostic imaging*
keywords: Apparent diffusion coefficient; Diabetic retinopathy; Diffusion-weighted imaging; Optic nerve