Measurement of MRI Artifacts Caused by Common Metallic Dental Materials and Common Ceramic Dental Materials on Dif-ferent Field-strength Mmagnets
- VernacularTitle:常用口腔金属和陶瓷材料在不同场强磁共振上伪影的实验研究
- Author:
Xiangqing PAN
;
Jiangang HUANG
- Publication Type:Journal Article
- Keywords:
dental material;
metal;
ceramics;
magnetic resonance imaging;
artifact
- From:
Journal of Zhejiang Chinese Medical University
2014;(8):944-947
- CountryChina
- Language:Chinese
-
Abstract:
Objective]To measure and compare the MRI artifacts caused by common metal ic dental materials and common ceramic dental materials on different field-strength magnets.[Methods] A total of 3 common metal ic dental materials and 2 common ceramic dental materials were tested with 0.35T, 1.5T and 3.0T MR imagers. The artifact areas on these 3 different field-strength magnets were measured and statistical y compared. [Results]Zirconia in three field magnetic resonance(NMR) in T1 and T2 as no artifacts, casting porcelain, metal al oy, nickel chromium al oy and CoCr-al oy in three fields magnetic resonance(NMR) in T1 and T2 as al can produce different degree of artifacts, and artifacts area increased in turn. Cobalt chromium al oy and nickel chromium al oy measurements on the high side, the cobalt chromium al oy than other four kinds of materials on the high side( P<0.05),high nickel-chromium al oy was precious metal al oy, casting porcelain( P<0.05). [Conclusions]Commonly used metal ic dental materials could cause MR artifacts and image degradation. Compared with that on 0.35T, the artifact was increased on 1.5T magnet. Compared with that on 1.5T, the artifact was increased on 3.0T magnet.
