1.5Tesla MRIに及ぼす歯科用材料の影響 : SE法における水平断画像の観察

概要

論文の詳細を見る
We evaluated the influence of dental materials on MR images using metals that are most frequently used in dental practice. No artifacts were observed using gold (Au), Casting Gold M.C. Type IV, golds-silver-palladium alloy (Au-Ag-Pd), or silver alloy (Ag). On the other hand, titanium (Ti), nickel-chrome alloy (Ni-Cr), cobalt-chrome alloy (Co-Cr), stainless steel orthodontic wire, cobalt-chrome orthodontic wire, and dental magnetic attachment (as a keeper) caused artifacts, signal void characteristics of magnetic materials, and a linear high intensity image and distortion at their boundary. In particular, marked artifacts were observed using stainless steel orthodontic wire and dental magnetic attachment (as a keeper) . In recent years, MRI has been shown to be useful in the diagnosis of head and neck disorders. Our findings suggest that evaluation of the imaging sequence is necessary as a measure against artifacts, and metals causing artifacts should be removable.
福岡歯科大学学会の論文
1996-12-31