Li Richard Longfei, Ludwig Daniel R, Shetty Anup S, Mellnick Vincent, Rubin Brian G
Division of Vascular Surgery, WashU Medicine, St Louis, MO.
Malinkrodt Institute of Radiology, WashU Medicine, St Louis, MO.
J Vasc Surg Cases Innov Tech. 2025 Jun 26;11(5):101898. doi: 10.1016/j.jvscit.2025.101898. eCollection 2025 Oct.
Endovascular aneurysm repair requires lifelong imaging surveillance, typically with contrast-enhanced computed tomography imaging. This poses risks to patients with end-stage renal disease. Ferumoxytol, a superparamagnetic iron-based nanoparticle with minimal nephrotoxicity, has emerged as an alternative contrast agent for magnetic resonance angiography in patients with renal impairment. We present a case of a patient with a failing renal transplant who underwent ferumoxytol-enhanced magnetic resonance angiography to further characterize an indeterminant etiology of continued aneurysm sac expansion to 10 cm, avoiding iodinated and gadolinium-based contrast while achieving high-quality imaging for endoleak detection.
血管内动脉瘤修复需要终身影像学监测，通常采用对比增强计算机断层扫描成像。这给终末期肾病患者带来了风险。非洛铁是一种具有最小肾毒性的超顺磁性铁基纳米颗粒，已成为肾功能损害患者磁共振血管造影的替代造影剂。我们报告了一例肾移植失败的患者，该患者接受了非洛铁增强磁共振血管造影，以进一步明确持续动脉瘤囊扩张至10厘米的不确定病因，避免使用含碘和钆基造影剂，同时获得用于检测内漏的高质量成像。
