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Shear-wave elastography for detection of placenta percreta: a case-controlled study.

Dilek Sen Dokumaci1, Hacer Uyanikoglu2

  • 1Harran University Medical Faculty, Department of Radiology, Sanliurfa, Turkey.

Acta Radiologica (Stockholm, Sweden : 1987)
|February 25, 2021
PubMed
Summary

Prenatal diagnosis of placenta percreta (PP) can be improved using shear-wave elastography (SWE). This study found significantly higher placental stiffness in women with PP, suggesting SWE as a potential diagnostic tool.

Keywords:
Placental stiffnessplacenta percretashear-wave elastography

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Area of Science:

  • Obstetrics and Gynecology
  • Medical Imaging
  • Diagnostic Ultrasound

Background:

  • Prenatal diagnosis of placenta percreta (PP) is crucial for effective management and minimizing complications.
  • Early detection enables a multidisciplinary approach for improved patient outcomes.

Purpose of the Study:

  • To evaluate the efficacy of shear-wave elastography (SWE) in the prenatal diagnosis of placenta percreta (PP).

Main Methods:

  • A prospective study included 18 women with PP and 20 controls in the second or third trimesters.
  • Shear-wave elastography (SWE) measured placental and myometrial elasticity.
  • Obstetric data and perinatal outcomes were reviewed; a placental shear-wave velocity (SWV) cut-off was determined.

Main Results:

  • Placental SWV was significantly higher in the PP group (1.95 ± 0.19 m/s) compared to controls (1.69 ± 0.23 m/s; P = 0.001).
  • Myometrial SWV was also elevated in the PP group (2.25 ± 0.39 m/s vs. 1.90 ± 0.71 m/s; P = 0.002).
  • A placental SWV cut-off of 1.92 m/s showed 58% sensitivity and 80% specificity for predicting placental adherence.

Conclusions:

  • Placental stiffness, measured by SWE, is significantly increased in placenta percreta cases.
  • SWE may serve as a valuable, alternative diagnostic method for prenatal detection of PP.