Xia Yang, Jin Rui, Li Wen, Shen Huahao
Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
J Thorac Dis. 2018 Oct;10(10):5939-5945. doi: 10.21037/jtd.2018.09.132.
Airway stent implantation is a highly effective treatment for airway stenosis. However, it is presently unclear whether patients with airway stents can safely undergo magnetic resonance imaging (MRI). Such stents may be metallic or non-metallic, and MRI may induce stent dislodgment or heating and may be associated with stent-induced artifacts. We thoroughly reviewed the literature, experimental data, and manufacturer information on non-metallic, stainless steel (SS) and nickel-titanium alloy stents. Non-metallic stents are made of non-ferromagnetic materials associated with no MRI concerns. SS stents may shift in a magnetic field, generating significant artifacts. Nickel-titanium alloy stents are not at risk of dislodgement or heating, but may create some artifacts affecting image quality. Both non-metallic and nickel-titanium alloy stents are safe for patients who must undergo MRI. However, the safety of SS stents depends on the type of steel used.
气道支架植入术是治疗气道狭窄的一种高效方法。然而，目前尚不清楚植入气道支架的患者能否安全地接受磁共振成像（MRI）检查。此类支架可能是金属材质或非金属材质，而MRI可能会导致支架移位或发热，并且可能与支架引起的伪影有关。我们全面回顾了有关非金属、不锈钢（SS）和镍钛合金支架的文献、实验数据及制造商信息。非金属支架由非铁磁性材料制成，不存在MRI相关问题。SS支架可能会在磁场中移动，产生明显的伪影。镍钛合金支架不存在移位或发热风险，但可能会产生一些影响图像质量的伪影。对于必须接受MRI检查的患者，非金属和镍钛合金支架都是安全的。然而，SS支架的安全性取决于所用钢材的类型。
