An update of diagnostic efficacy of ultrasound and magnetic resonance imaging in the diagnosis of clinically significant placenta accreta spectrum disorders

Fratelli, N.; Fichera, A.; Prefumo, Federico

doi:10.1097/gco.0000000000000811

Cited by 11 publications

(14 citation statements)

References 21 publications

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“…This technology does not require the use of radiation, and is more safer for pregnant women and fetuses. Moreover, MRI imaging will not be affected by fetal movement or fetal position, and can be checked in different pregnancy periods, which is very helpful for the early diagnosis and follow-up of placenta previa [7]. In addition, MRI can also comprehensively evaluate multiple parameters, such as the thickness of placenta, the length of cervix, the distance between placenta and cervix, the size and shape of the internal orifice of cervix, etc., to judge the type and severity of placenta previa from multiple perspectives, and more accurately diagnose and evaluate [8].…”

Section: Accuracy Of Mri In Diagnosis Of Placenta Previamentioning

confidence: 99%

The Value of MRI in the Diagnosis of Placenta Previa

Ding

Wang

Ling

2023

Int J Comput Intell Syst

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Objective To analyze the diagnostic value of MRI in placenta previa. Methods 100 pregnant women with placenta previa admitted to our hospital from January 2017 to January 2020 were selected as the research objects. They were randomly divided into groups by digital table. Group A (50 cases) carried out magnetic resonance imaging (MRI) examination, and Group B (50 cases) carried out Doppler ultrasound examination. The detection of disease types and diagnostic accuracy were compared, and the imaging manifestations of MRI in the diagnosis of placenta accreta and non placenta accreta were analyzed. Results The detection rate of central type, marginal type and partial type in group A was higher than that in group B (P < 0.05). With surgery and pathology as the gold standard, the diagnostic accuracy and sensitivity of group A were higher than that of group B, and the rate of missed diagnosis was lower than that of group B (P < 0.05). Among the 50 pregnant women in Group A, 9 had placenta implantation and 41 had no placenta implantation. There were differences in the imaging manifestations of the pregnant women, such as the uneven signal in the placenta, the increased/thickened blood vessels in the placenta, and the unclear boundary between the placenta and the uterus (P < 0.05). Conclusion MRI examination is an important way for clinical diagnosis of placenta previa, and it is worth popularizing.

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Section: Accuracy Of Mri In Diagnosis Of Placenta Previamentioning

confidence: 99%

The Value of MRI in the Diagnosis of Placenta Previa

Ding

Wang

Ling

2023

Int J Comput Intell Syst

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“…An updated review by Fratelli et al 2022, 12 on the diagnostic accuracy of US and MRI in PAS disorders, showed that the advantages of each imaging modality counteract the limitations of the other. Thus, the disadvantages of US, such as operator-dependence and limited penetration and narrow field of view, are compensated by MRI's reproducible large field of view.…”

Section: Introductionmentioning

confidence: 99%

Adjunctive MRI in the diagnosis of placenta accreta spectrum in major placenta previa: incidence, risk factors, and maternal morbidity

Shaamash,

AlQasem,

Al Ghamdi

et al. 2023

Ann Saudi Med

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BACKGROUND: Antenatal assessment of maternal risk factors and imaging evaluation can help in diagnosis and treatment of placenta accreta spectrum (PAS) in major placenta previa (PP). Recent evidence suggests that magnetic resonance imaging (MRI) could complement ultrasonography (US) in the PAS diagnosis. OBJECTIVES: Evaluate the incidence, risk factors, and maternal morbidity related to the MRI diagnosis of PAS in major PP. DESIGN: A 10-year retrospective cohort study. SETTING: Tertiary care hospital. PATIENTS AND METHODS: We report on patients with major PP who had cesarean delivery in Abha Maternity and Children's Hospital (AMCH) over a 10-year period (2012-2021). They were evaluated with ultrasonography (US) and color Doppler for evidence of PAS. Antenatal MRI was ordered either to confirm the diagnosis (if equivocal US) or to assess the depth of invasion/extra-uterine extension (if definitive US). MAIN OUTCOME MEASURES: Risk factors for PAS in major PP and maternal complications. SAMPLE SIZE: 299 patients RESULTS: Among 299 patients, MRI confirmed the PAS diagnosis in 91/299 (30.5%) patients. The independent risk factors for MRI diagnosis of PAS in major PP included only repeated cesarean sections and advanced maternal age. The commonest maternal morbidity in major PP with PAS was significantly excessive intraoperative bleeding. CONCLUSION: MRI may be a valuable adjunct in the evaluation of PAS in major PP, but not as a substitute for US. MRI may be suitable in major PP/PAS patients who are older and have repeated cesarean deliveries with equivocal results or suspected deep/extra-uterine extension on US. LIMITATION: Single center, small sample size, lack of complete histopathological diagnosis. CONFLICT OF INTEREST: None.

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“…MRI has a wide field of view and high contrast resolution to describe the characterization of placental anatomy [9]. MRI is an effective imaging modalities for guiding management of PP [10]. Due to the thinning uterine segment, PP is often combined with placenta accreta or increta.…”

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confidence: 99%

“…9 MRI is an effective imaging modalities for guiding management of PP. 10 Due to the thinning uterine segment, PP is often combined with placenta accreta or increta. PP is associated with high incidence of intraoperative hemorrhage (IPH) and postpartum hemorrhage, need for blood transfusion and hysterectomy, which is considered a severe complication of pregnancy, and even death.…”

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confidence: 99%

Magnetic Resonance Imaging–Based Radiomics Nomogram to Predict Intraoperative Hemorrhage of Placenta Previa

Zhou

Wang

et al. 2023

Am J Perinatol

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Background: Placenta previa (PP) is associated with intraoperative and postpartum hemorrhage, increased maternal morbidity and mortality. We aimed to develop a magnetic resonance imaging (MRI)-based nomogram to preoperative prediction of intraoperative hemorrhage (IPH) for PP. Methods: A total of 125 PP pregnant women were divided into a training set (n = 80) and a validation set (n = 45). A MRI-based model was built for the classification of patients into IPH and non-IPH groups in a training set and a validation set. Multivariate nomograms were built according to radiomics features. Receiver operating characteristic (ROC) curve was used to assess the model. Predictive accuracy of nomogram were assessed by calibration plots and decision curve analysis. Results: In multivariate analysis, placenta position, placenta thickness, cervical blood sinus and placental signals in the cervix were signifcantly independent predictors for IPH (all p < 0.05). The MRI-based nomogram showed favorable discrimination between IPH and non-IPH groups. The calibration curve showed good agreement between the estimated and the actual probability of IPH. Decision curve analysis also showed a high clinical benefit across a wide range of probability thresholds. Area under the ROC curve (AUC) was 0.918 ( 95% CI, 0.857-0.979 ) in the training set and 0.866 ( 95% CI, 0.748-0.985 ) in the validation set by the combination of four MRI features. Conclusions: The MRI-based nomograms might be a useful tool for the preoperative prediction of IPH outcomes for PP. Our study enables obstetricians to perform adequate preoperative evaluation to reduce blood loss and caesarean hysterectomy.

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An update of diagnostic efficacy of ultrasound and magnetic resonance imaging in the diagnosis of clinically significant placenta accreta spectrum disorders

Cited by 11 publications

References 21 publications

The Value of MRI in the Diagnosis of Placenta Previa

The Value of MRI in the Diagnosis of Placenta Previa

Adjunctive MRI in the diagnosis of placenta accreta spectrum in major placenta previa: incidence, risk factors, and maternal morbidity

Magnetic Resonance Imaging–Based Radiomics Nomogram to Predict Intraoperative Hemorrhage of Placenta Previa

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