Comparison of MRI artifacts caused by Ni-Cr alloy fixed prostheses on different field-strength magnets / 上海第二医科大学学报
Journal of Shanghai Jiaotong University(Medical Science)
;
(6)2006.
Article
in Chinese
| WPRIM
| ID: wpr-640783
ABSTRACT
Objective To evaluate the influence of different field-strength magnets(1.5 T and 3.0 T)on MRI artifacts caused by Ni-Cr alloy fixed prostheses.Methods The crown,bridge and upper denture fixed prostheses with different thickness were produced by Ni-Cr alloy as test samples,and were one by one put on the centre of water phantom for MR scanning with different field-strength magnets(1.5 T and 3.0 T).The artifact areas on these two field-strength magnets were measured and statistically compared.The plastic prostheses with the same shape and thickness as the test samples were served as controls.Results Ni-Cr alloy fixed prostheses could cause MRI artifacts,and the artifact areas increased with the mass of prostheses.However,no artifact area was found in controls.Compared with those on 1.5 T magnet,the MRI artifact areas significantly increased on 3.0 T magnet(P
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Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Journal of Shanghai Jiaotong University(Medical Science)
Year:
2006
Type:
Article
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