Comparative Study of High-field Magnetic Resonance Imaging HASTE Sequence and High-frequency Color Doppler Ultrasound in the Diagnosis of Pernicious Placenta Previa and Placenta Accreta
Objective To compare the value of high-field magnetic resonance imaging half-Fourier acquisition single-shot turbo spin-echo(HASTE)sequence and high-frequency color Doppler ultrasound in the diagnosis of pernicious placenta previa(PPP)and placenta accreta.Methods The clinical data of 116 patients who underwent cesarean section to terminate pregnancy and were diagnosed with PPP through postoperative pathological examination at the No.2 Hospital of Baoding from 2017 to 2022 were analyzed retrospectively.All patients were examined with high-field magnetic resonance imaging and high-frequency color Doppler ultrasound.Postoperative pathological examination results were taken as the golden standard to compare the diagnostic value of the two examination methods in patients with PPP and placenta accreta.Results Postoperative pathological results showed 81 patients with placenta accreta and 35 patients without.High-field magnetic resonance imaging HASTE sequence examination found 68 patients with placenta accreta and 48 without.High-frequency ultrasound examination found 66 patients with placenta accreta and 50 without.The combined diagnosis results of the two methods showed 84 patients with placenta accreta and 32 without.Compared with postoperative pathological results,the sensitivity,specificity,positive predictive value,negative predictive value and kappa value of high-field magnetic resonance imaging HASTE sequence for diagnosing placenta accreta in patients with PPP were 81.48％,94.29％,85.34％,97.06％and 0.685.The sensitivity,specificity,positive predictive value,negative predictive value and kappa value of high-frequency color Doppler ultrasound for diagnosing placenta accreta in patients with PPP were 75.31％,85.71％,78.45％,92.42％and 0.544.The sensitivity,specificity,positive predictive value,negative predictive value and kappa value of combined diagnosis of placenta accreta in patients with PPP were 96.30％,82.86％,92.24％,90.63％and 0.811.Condusion For single diagnosis of placenta accreta in patients with PPP,high-field magnetic resonance imaging HASTE sequence is better than high-frequency color Doppler ultrasound.Combined use of the two can significantly improve the diagnostic performance,which can be used for diagnosing placenta accreta in patients with PPP in clinical practice.
万方数据
维普
