Predicting the risk of placenta accreta by MRI signs and clinical factors

HUANG Huachi; LIN Jianjun; MA Hui; CHEN Qing; LI Shanshan

doi:10.20258/j.cnki.1006-9011.2025.03.018

Abstract：Objective To predict the risk of placental accretion disease by analyzing the clinical factors and MRI signs.Methods A total of 48 patients with placental accretion were collected,and 48 patients with non-placental accretion were col-lected for comparative study.The age,gestational week and the number of cesarean section and abortion were recorded.The cor-responding MRI signs were analyzed by referring to the observational indicators from previous studies.The clinical factors and MRI signs were analyzed by single factor analysis.PPV and OR values were calculated for all factors(except clinical factors and quantitative MRI indicators).Factors that had statistical significance according to univariate analysis were included in binary lo-gistic regression analysis.Results The presence or absence of placental accretion disease was related to the number of cesar-ean section,placenta previa,placenta main attachment location,situation of myometrium which was in the proximity of pla-centa,T2WI low signal,placental thickness above cervix,abnormal blood vessels,placental protrusion,and disappearance of space between uterus and uterovesical(P<0.05).When the placenta mainly attachment to the inferior uterine wall,the boundary between the placenta and the adjacent uterine myometria was unclear,myometria was not continuous,and other MRI abnormal signs(except quantitative MRI indicators)were present,OR>1(P<0.05).The number of cesarean section,placenta previa and abnormal blood vessels were independent risk factors for placental accretion disease(P<0.05).Conclusion Risk prediction by analyzing clinical factors and MRI signs is helpful for the diagnosis of placental accretion.