目的 评估磁共振反转恢复水抑制（IRON）结合注射长循环单晶体氧化铁纳米颗粒（MION）-47作为对比剂的磁共振血管成像的效用。材料和方法 ......

Objectives: To directly compare the quality of harmonic imaging (HI) and fundamental imaging (FI) in fetal echocardiogra......