Abstract #3886

Evaluation of retained products of conception by arterial spin labeling-MRI: Clinical feasibility and initial results

Nobuyuki Kosaka¹, Yasuhiro Fujiwara², Masayuki Kanamoto³, Tsuyoshi Matsuda⁴, Tatsuya Yamamoto¹, Kazuhiro Shimizu¹, Kanako Ota⁵, Yoshio Yoshida⁵, Tetsuji Kurokawa⁵, and Hirohiko Kimura¹

¹Department of Radiology, University of Fukui, Eiheiji, Japan, ²Department of Medical Imaging, Kumamoto University, Kumamoto, Japan, ³Radiological Center, University of Fukui Hospital, Eiheiji, Japan, ⁴Global MR Applications and Workflow, GE Healthcare Japan Corporation, Hino, Japan, ⁵Department of Obstetrics and Gynecology, University of Fukui, Eiheiji, Japan

In this study, arterial spin-labeling (ASL)-MRI was used to evaluate the vascularity of retained products of conception (RPOCs). In 5 of 7 cases, high signals on ASL-MRI were observed, and therapeutic response could be evaluated by ASL-MRI. However, these findings of ASL-MRI were not completely identical to those of other conventional imaging modalities, such as dynamic contrast-enhanced MRI and Doppler-US. ASL-MRI is clinically feasible and can be used to assess therapeutic response. Although its clinical advantages over conventional imaging need to be evaluated, ASL-MRI has clinical potential for non-invasive assessment of RPOCs.

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