فهرست نشریات علمی دسترسی آزاد ایران

Background: Recently there have been attempts to link fetal growth retardation to placental morphology as well as apparent-diffusion coefficient (ADC) values. Objectives: The purpose of this study was to investigate the possible correlation of apparent diffusion coefficient (ADC) values of normal placentas with different gestational ages and various Grannum grades (Gg). Results: There were 11, 18, 9, 0 patients with normal looking placentas with Gg of 0, 1, 2, and 3 respectively. ADC values obtained from b values of 0, and 1000 show a significant correlation with gestational-age (R 2 = 0.60, P = 0.000) and Gg (P = 0.004) respectively, while ADC values obtained from b values of 50, 400, and 800 did not show significant correlation with gestational age (R 2 = 0.087, P = 0.073) or Gg (P = 0.236). Conclusion: ADC values which were obtained from sets of b values of 0 and 1000 correlated with placental maturity (both gestational age (GA) and Grannum grades). This can be attributed to lower b-values covering the microperfusion in addition to diffusion characteristics of the tissue.