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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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