4D 流动磁共振成像评估单侧肺动脉球囊血管成形术前后右心室流出道动脉瘤的血流动力学：一例报告
Hemodynamics of a right ventricular outflow tract aneurysm assessed with 4D flow MRI before and after unilateral pulmonary artery balloon angioplasty: A case report.
作者信息
Oka Hideharu, Nakau Kouichi, Ito Keita, Imanishi Rina, Fukao Kazunori, Nakagawa Sadahiro, Suzuki Tatsuya, Takahashi Satoru
机构信息
Department of Pediatrics, Asahikawa Medical University, Hokkaido, Japan.
Section of Radiological Technology, Department of Medical Technology, Asahikawa Medical University Hospital, Hokkaido, Japan.
出版信息
Radiol Case Rep. 2025 May 15;20(8):3789-3792. doi: 10.1016/j.radcr.2025.04.083. eCollection 2025 Aug.
Right ventricular outflow tract aneurysms are rare postoperative complications associated with congenital heart diseases. The hemodynamics associated with a right ventricular outflow tract aneurysm serve as important risk indicators for aneurysm expansion and thrombus formation; however, they have not been thoroughly evaluated. A 3-year-old girl was diagnosed with Double-outlet right ventricle who underwent surgical correction with patch enlargement of the right ventricular outflow tract at 2.5 years. Postoperatively, a patch expansion mass was observed and 4D flow MRI showed vortex flow. Notably, vortex flow within the aneurysm persisted even after balloon dilation of the unilateral pulmonary artery. Evaluating blood flow in right ventricular outflow tract aneurysms is crucial for determining prognosis and guiding treatment strategies.
右心室流出道动脉瘤是与先天性心脏病相关的罕见术后并发症。与右心室流出道动脉瘤相关的血流动力学是动脉瘤扩张和血栓形成的重要风险指标；然而，它们尚未得到充分评估。一名3岁女孩被诊断为右心室双出口，在2.5岁时接受了右心室流出道补片扩大手术矫正。术后观察到补片扩张肿块，四维血流磁共振成像显示有涡流。值得注意的是，即使在单侧肺动脉球囊扩张后，动脉瘤内的涡流仍然存在。评估右心室流出道动脉瘤的血流对于确定预后和指导治疗策略至关重要。
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