Grey-scale and colour Doppler ultrasound versus magnetic resonance imaging for the prenatal diagnosis of placenta accreta

Rezk, Mohamed; Shawky, Mohamed

doi:10.3109/14767058.2014.993604

Cited by 34 publications

(44 citation statements)

References 23 publications

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“…On screening the titles and abstracts, a further 162 were excluded as the reported outcomes were not relevant, leaving 58 studies which were obtained for full text review. An additional 38 articles were excluded after full review including letters (n=16), narrative reviews (n=10) commentaries (n=9), conference proceedings (n=2) and duplication of data in another publication (n=1), leaving 20 articles for the final analysis 19–38…”

Section: Resultsmentioning

confidence: 99%

Epidemiology of placenta previa accreta: a systematic review and meta-analysis

Jauniaux¹,

et al. 2019

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ObjectiveTo estimate the prevalence and incidence of placenta previa complicated by placenta accreta spectrum (PAS) and to examine the different criteria being used for the diagnosis.DesignSystematic review and meta-analysis.Data sourcesPubMed, Google Scholar, ClinicalTrials.gov and MEDLINE were searched between August 1982 and September 2018.Eligibility criteriaStudies reporting on placenta previa complicated by PAS diagnosed in a defined obstetric population.Data extraction and synthesisTwo independent reviewers performed the data extraction using a predefined protocol and assessed the risk of bias using the Newcastle-Ottawa scale for observational studies, with difference agreed by consensus. The primary outcomes were overall prevalence of placenta previa, incidence of PAS according to the type of placenta previa and the reported clinical outcomes, including the number of peripartum hysterectomies and direct maternal mortality. The secondary outcomes included the criteria used for the prenatal ultrasound diagnosis of placenta previa and the criteria used to diagnose and grade PAS at birth.ResultsA total of 258 articles were reviewed and 13 retrospective and 7 prospective studies were included in the analysis, which reported on 587 women with placenta previa and PAS. The meta-analysis indicated a significant (p<0.001) heterogeneity between study estimates for the prevalence of placenta previa, the prevalence of placenta previa with PAS and the incidence of PAS in the placenta previa cohort. The median prevalence of placenta previa was 0.56% (IQR 0.39–1.24) whereas the median prevalence of placenta previa with PAS was 0.07% (IQR 0.05–0.16). The incidence of PAS in women with a placenta previa was 11.10% (IQR 7.65–17.35).ConclusionsThe high heterogeneity in qualitative and diagnostic data between studies emphasises the need to implement standardised protocols for the diagnoses of both placenta previa and PAS, including the type of placenta previa and grade of villous invasiveness.PROSPERO registration numberCRD42017068589

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Section: Resultsmentioning

confidence: 99%

Epidemiology of placenta previa accreta: a systematic review and meta-analysis

Jauniaux¹,

et al. 2019

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“…Previously reported studies to diagnose MAP by 2D ultrasound have concluded a range between 76% -94% and 74% -99% for sensitivity and specificity respec- [20]. This wide range is probably attributed to the subjectivity of the 2D parameters and the variation in sample size.…”

Section: Comparison With Previous Studiesmentioning

confidence: 92%

Detecting Accuracy of Three Dimensional Power Doppler (3DPD) Vascular Indices for Prenatal Diagnosis of Morbidly Adherent Placenta in Patients with Placenta Previa

Abdelhamid¹,

Aly²,

Ghaly³

et al. 2020

OJOG

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Objective: The study's objective was to assess the accuracy of using prenatal 3-dimensional power Doppler analysis of vascular placental indices to accurately diagnose morbidly adherent placenta objectively. Background: Traditionally, 2D ultrasound was used for the diagnosis of a suspected morbidly adherent placenta (MAP) previa. More objective techniques like 3D power Doppler haven't been well studied. Study Design: A prospective cohort study is designed for women with gestational age between 28 and 32 weeks with suspected placenta previa. Patients were examined by 2D ultrasound which was used in management decisions. 3D Power Doppler's VI, FI and VFI were measured during the same examination after manual tracing of placenta; data were blinded to obstetricians. Histopathology was performed to confirm MAP. Results: Our results showed that the 3D power Doppler VI ≥ 16 predicted the diagnosis of MAP with 100% sensitivity, 100% specificity which is better than those of 2D ultrasound. While VI > 33.1 measured by 3D Doppler predicted severe MAP with a sensitivity of 73.9% and specificity of 86.4%, which was superior to 2D ultrasound. Conclusion: In patients with placenta previa, the 3D Doppler's vascular index accurately predicts MAP. Furthermore, vascular and vascular flow indices of 3D Doppler were more predictive of severe cases of MAP compared to 2D ultrasound.

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“…6 Few studies compared the accuracy of the MRI and US in the antenatal diagnosis of placental accretism, and similar prediction results have been found for both methods. [7][8][9][10] Satija et al 8 concluded that the US remains the primary modality for the evaluation of placental accretism, and the MRI should be reserved for inconclusive cases. Rezk and Shawky 9 compared Doppler US and MRI in patients with placenta previa and uterine scarring.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9][10] Satija et al 8 concluded that the US remains the primary modality for the evaluation of placental accretism, and the MRI should be reserved for inconclusive cases. Rezk and Shawky 9 compared Doppler US and MRI in patients with placenta previa and uterine scarring. Even though these authors did not make separate analyses for the placement of the placenta, they concluded that the MRI should be reserved to exclude accretion in cases of posterior or lateral placental location.…”

Section: Introductionmentioning

confidence: 99%

“…Even though these authors did not make separate analyses for the placement of the placenta, they concluded that the MRI should be reserved to exclude accretion in cases of posterior or lateral placental location. 9 The objective of the present study was to assess and compare the sensitivity and specificity of the US and MRI in the diagnosis of placenta accreta in patients with placenta previa.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Sensitivity and Specificity of Ultrasound and Magnetic Resonance Imaging in the Diagnosis of Placenta Accreta

Lopes

Feitosa

Brazil

et al. 2018

Rev Bras Ginecol Obstet

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Objective To assess and compare the sensitivity and specificity of ultrasonography and magnetic resonance imaging in the diagnosis of placenta accreta in patients with placenta previa. Methods This retrospective cohort study included 37 women, and was conducted between January 2013 and October 2015; 16 out of the 37 women suffered from placenta accreta. Histopathology was considered the gold standard for the diagnosis of placenta accreta; in its absence, a description of the intraoperative findings was used. The associations among the variables were investigated using the Pearson chi-squared test and the Mann-Whitney U-test. Results The mean age of the patients was 31.8 ± 7.3 years, the mean number of pregnancies was 2.8 ± 1.1, the mean number of births was 1.4 ± 0.7, and the mean number of previous cesarean sections was 1.2 ± 0.8. Patients with placenta accreta had a higher frequency of history of cesarean section than those without it (63.6% versus 36.4% respectively; p < 0.001). The mean gestational age at birth among women diagnosed with placenta previa accreta was 35.4 ± 1.1 weeks. The mean birth weight was 2,635.9 ± 374.1 g. The sensitivity of the ultrasound was 87.5%, with a positive predictive value (PPV) of 65.1%, and a negative predictive value (NPV) of 75.0%. The sensitivity of the magnetic resonance imaging was 92.9%, with a PPV of 76.5%, and a NPV of 75.0%. The kappa coefficient of agreement between the 2 tests was 0.69 (95% confidence interval [95%CI]: (0.26–1.00). Conclusion The ultrasound and the magnetic resonance imaging showed similar sensitivity and specificity for the diagnosis of placenta accreta.

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Grey-scale and colour Doppler ultrasound versus magnetic resonance imaging for the prenatal diagnosis of placenta accreta

Abstract: Placenta accreta can be successfully diagnosed by grey-scale and colour Doppler US. MRI would be more likely suggested for either posteriorly or laterally situated placenta previa in order to exclude placental invasion.

Cited by 34 publications

References 23 publications

Epidemiology of placenta previa accreta: a systematic review and meta-analysis

Epidemiology of placenta previa accreta: a systematic review and meta-analysis

Detecting Accuracy of Three Dimensional Power Doppler (3DPD) Vascular Indices for Prenatal Diagnosis of Morbidly Adherent Placenta in Patients with Placenta Previa

Assessment of Sensitivity and Specificity of Ultrasound and Magnetic Resonance Imaging in the Diagnosis of Placenta Accreta

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