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http://dx.doi.org/10.5392/JKCA.2010.10.9.302

Metal Artifact Caused by Magnetic Field Strength and Sequence on T1WI-MRI  

Ko, Seong-Jin (부산가톨릭대학교 보건과학대학 방사선학과)
Publication Information
The Journal of the Korea Contents Association / v.10, no.9, 2010 , pp. 302-308 More about this Journal
Abstract
In MRI, the Ferromagnetic artifact is generated by the metalization within in which the before inspection removal is impossible and the distortion of an image is brought. The distortion measure according to the steel for each sequence of T1 image and magnetic field intensity are analyzed and minimized method is looked into. We used SIEMENS 1.5T and 3.0T MRI for experiment equipment. First, it places within the Phantom making a metalization(Ti+Al, Stainless, Nitinol) on 1.5T, 3.0T MRI and the T1 weighted image for each Sequence is acquired. The distortion of an image and about adjacent portion change of the metal material were compared through the obtained image, we analyzed. In all metalizations, a distortion was generated and a distortion was few in particularly, and Titanium-Aluminium alloy. And the extent of a distortion was worse image in the Turbo spin Echo. The use of the Titanium-Aluminium alloy the inserted in an internal material of the metalization is recommend. and, equipment of 1.5T the patient inserting a metal in an internal is used in an inspection than equipment of 3.0T. Also, the sequence is suitable when it obtains the optimum T1 weighted image of an impersonate to use the Turbo spin Echo.
Keywords
Ferromagnetic Artifact; Sequence; T1 Weighted Image; MRI;
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