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Purpose:Toassessthecorrelationbetweenmagneticresonanceimagesandsurgcalfindingsintheevaluationofthetopography andcervicalinvasionofinvasiveplacentapraevia. Materials and methods:AretrospectivereviewofplacentaMRI(pMR)of105pregnantwomensuspectedinvasiveplacenta praevia.Twoexperiencedradiologists(rater1andrater2),blindedtothesurgeryfindings,basedontheestablishedMRI diagnosticcriteria,wereaskedtogiveafinaldiagnosisforeachpatient:first,thedecisionofwhetherornotthepatienthadan invasiveplacentapraevia;second,incaseofinvasiveplacentapraevia,evaluationofthetopographyandcervix.Thelengthand morphologyofthecervix,andtheplacentaaroundtheinternalcervicalosweredepicted.Inter-raterreliabilityofevaluationthe topographybetweenthetworadiologistswasassessedbyKappastatistics.Associationbetweengivenfinaldiagnosisandsugery findingswascompared.Sensitivity,specificityandaccuracyofMRIforthediagnosisofinvasiveplacentapraeviaandthe evaluationoftopographyandcervcalinvasionwereestimated. Results:Theinter-raterreliabilityamongthetworadiologistswasgoodforevaluationofthetopography(Kappa=0.893).The overallsensitivity,specificityandaccuracyofMRIindiagnosisofinvasiveplacentapraevia,andevaluationofthetomographyand thecervixinvasionwere93.9%,89.6%,91.9%;86.4%,89.6%,88.1%and100%,100%,100%.5casesoftheinvasiveplacentawith cervicalinvasionallhaddisorderedcervcalstructures.InvasiveplacentapraeviawiththeinvolvementofS2sectorhadahighter rateofdisorderedplacentaaroundtheinternalcervicalos(26/39vs5/19,P=0.005)andalsotendedtohaveshotercervixthanS1 sectorinvasionalone(2.90±1.1cmvs3.25±0.71cm,P=0.039). Conclusion:MRIisreliabletoestimatethetopographyandcervicalinvasionoftheinvasiveplacentapraevia.Moreover, disorderedcervcalstructurewassuggestiveofcervicalinvasion.Inaddition,disorderedplacentaaroundtheinternalcervicalor evenplacentaprotrusionwereindicatedinvasiveplacentawiththeinvolvementofS2sector.