Diagnostic and Interventional Radiology
Fetal Imaging - Original Article

Evaluation of the placenta with relative apparent diffusion coefficient and T2 signal intensity analysis

1.

Department of Radiology Aksaz Military Hospital, Muğla, Turkey

2.

Department of Radiology Acıbadem University School of Medicine, İstanbul, Turkey

3.

Department of Radiology Acıbadem University School of Medicine, İstanbul, Turkey

4.

Department of Radiology Acıbadem University School of Medicine, İstanbul, Turkey

5.

Department of Radiology Acıbadem University School of Medicine, İstanbul, Turkey

6.

Department of Radiology GATA Haydarpaşa Teaching Hospital, İstanbul, Turkey.

Diagn Interv Radiol 2013; 19: 495-500
DOI: 10.5152/dir.2013.13106
Read: 739 Downloads: 525 Published: 03 September 2019

Abstract

PURPOSE:
We aimed to test the null hypothesis that relative apparent diffusion coefficient (rADC) and relative signal intensity values (rSIHASTE) do not change in the evaluation of placental maturation with advancing gestational age.

MATERIALS AND METHODS:
Fifty-six fetuses with diffusion-weighted magnetic resonance imaging (DW-MRI) data were enrolled in this retrospective study. Fetuses were analyzed in three different gestational age groups: group 1, 18–23 weeks; group 2, 24–28 weeks; and group 3, 29–38 weeks. The rADC (mean ADC/ADCglobe) and rSIHASTE values (mean SIHASTE/SIglobe) were obtained. Two radiologists experienced in fetal MRI who were blinded to the patient information reviewed MRI images independently. Kruskal-Wallis Test was used to compare the rADC and rSIHASTE with gestational age groups. The agreement between the two blinded readers was tested using Krippendorff’s alpha ratio.

RESULTS:
Both placental rADC values and placental rSIHASTE values were not significantly different between the gestational age groups (P = 0.688 and P = 0.280, respectively). rADC and rSIHASTE measurements were reproducible with a good agreement between the two readers (Krippendorff’s alpha ratio was 0.613 and 0.778, respectively).

CONCLUSION:
The rADC and rSIHASTE values do not change with advancing gestational age.

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