Wichmann W, Von Ammon K, Fink U, Weik T, Yasargil G M
Institute of Neuroradiology, University Hospital, Zurich, Switzerland.
AJNR Am J Neuroradiol. 1997 May;18(5):939-44.
To evaluate the magnetic characteristics, artifact formation, and implant safety of titanium aneurysm clips for use in MR imaging.
Aneurysm clips made of titanium alloy TiAl6V4 were tested in a magnetometer to determine their magnetic susceptibility and in a 1.5-T MR imager using both a geometric phantom and an animal model. A commercially available alpha-Phynox clip served as the reference standard.
We found minimal magnetization and a significant reduction in image artifacts with the titanium clip as compared with the Phynox clip.
The titanium clips improve image quality, biocompatibility, and patient safety in medical MR applications.
评估用于磁共振成像（MR）的钛制动脉瘤夹的磁特性、伪影形成及植入安全性。
采用钛合金TiAl6V4制成的动脉瘤夹在磁力计中进行测试以确定其磁化率，并在1.5-T MR成像仪中使用几何模型和动物模型进行测试。将市售的α-Phynox夹作为参考标准。
我们发现与Phynox夹相比，钛夹的磁化极小，图像伪影显著减少。
钛夹可改善医学MR应用中的图像质量、生物相容性及患者安全性。
