Abstract #3898

MRI Features of Placenta Percreta: Evaluation of the Features for 46 Patients Using Surgical and Histopathological Correlations

Xin Chen¹, Guangbin Wang², Shanshan Wang², Tao Gong¹, Sai Shao², and Tianyi Qian³

¹Shandong University, Jinan, China, People's Republic of, ²Shangdong Medical Imaging Research Institute, Jinan, China, People's Republic of, ³MR Collaborations NE Asia, Siemens Healthcare, Beijing, China, People's Republic of

The objective of the study was to identify valuable features to distinguish placenta percreta from placenta accreta and increta by retrospectively reviewing placenta MRI together with clinical findings for 46 patients diagnosed with invasive placenta. Single-shot turbo spin echo and true fast-imaging with steady-state precession sequence were included in the MR exam protocol. Two experienced radiologists evaluated seven MRI features using surgical and histopathological correlations. The features of bulging placenta including cyrtoid outline, marked placental heterogeneity and signs of placental protrusion are useful to distinguish placenta percreta from placenta accreta and increta. The wall of urinary bladder with nodular protrusion is indicative of urinary bladder involvement.

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