Safety of implantable coronary stents during 1H-magnetic resonance imaging at 1.0 and 1.5 T

被引:31
作者
Strohm, O [1 ]
Kivelitz, D
Gross, W
Schulz-Menger, J
Liu, XM
Hamm, B
Dietz, R
Friedrich, MG
机构
[1] Humboldt Univ, Fak Med, Charite Klinikum, D-1040 Berlin, Germany
[2] Max Delbruck Ctr Mol Med, Franz Volhard Klin, Med Klin Schwerpunkt Mol & Klin Kardiol, Berlin, Germany
[3] Inst Diagnost Radiol, Berlin, Germany
[4] ZAE Bayern, Bavarian Ctr Appl Energy Res eV, Erlangen, Germany
关键词
magnetic resonance imaging; safety; stents; temperature;
D O I
10.3109/10976649909088336
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
The safety of most available implantable intracoronary stents during magnetic resonance imaging (MRI) has not been sufficiently tested Minor, but possibly clinically significant, increases in temperature have not been excluded. We measured temperature changes of 14 different stents clinically in use or currently tested for release on the world market. Stents were examined in 1.0- and 1.5-T MR scanners with multiple sequences used in routine cardiac and thoracic MRI examinations (''clinical worst case") and after implantation of the stents into the coronary arteries of excised pig hearts (1.5-T scanner only). We used a highly sensitive infrared camera with a thermal resolution of 10 mK and did not see significant heating of any stent during the examinations. We conclude that MRI is safe in patients with the currently available intracoronary stents.
引用
收藏
页码:239 / 245
页数:7
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