The diagnostic value of magnetic resonance for placenta previa

Abstract

Objective To study the diagnostic value of magnetic resonance for placenta previa, so as to provide clinical guidance. Methods 118 pregnant women who met the inclusion criteria were chosen in the study. Each pregnant woman's basic information, diagnostic results of magnetic resonance and cesarean section were collected.The diagnostic results of cesarean section were chose as the gold standard, and the sensitivity, specificity and Kappa value of magnetic resonance were calculated. Results Using magnetic resonance, 49 pregnant women with placenta previa and 69 pregnant women without placenta previa were detected and diagnosed.Both of the sensitivity and specificity were 100.00%.In the further diagnosis of placenta previa type, the total placenta previa's diagnostic sensitivity and specificity of magnetic resonance were the highest, which were 88.89% and 97.18%, respectively.And for the marginal placenta previa, those were 85.71% and 95.83%, respectively.The last was the part of placenta previa, for which were the 77.78% and 95.83%, respectively.Compared with the diagnostic results of cesarean section, there existed correlation between the two methods of detection, and the Kappa value was 0.95, which was very good. Conclusion The magnetic resonance has very high diagnostic value for the placenta previa, thus it is worthy of clinical popularization and application. Key words: Placenta previa; Magnetic resonance imaging; Diagnostic value