Guidewire antennas for MR fluoroscopy

被引:60
作者
Ladd, ME
Erhart, P
Debatin, JF
Hofmann, E
Boesiger, P
vonSchulthess, GK
McKinnon, GC
机构
[1] SCHNEIDER EUROPE AG,BULACH,SWITZERLAND
[2] UNIV ZURICH,INST BIOMED ENGN & MED INFORMAT,ZURICH,SWITZERLAND
[3] SWISS FED INST TECHNOL,ZURICH,SWITZERLAND
[4] GE CO,MED SYST,APPL SCI LAB,MILWAUKEE,WI 53201
关键词
interventional MRI; guidewires; surface coils; device visualization;
D O I
10.1002/mrm.1910370614
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Before MRI can be used for guiding vascular interventions, the problem of dependably visualizing guidewires must be solved, ideally the position and curvature of the tip of the guidewire should be visible to facilitate steering through the vascular system, In this paper, various antennas are described that can be incorporated into a guidewire tip, These antennas allow the guidewire to be visualized with high contrast, Computer simulation and experimental evidence are presented showing the value of adding a passive MR signal source, with a short T-1, internal to the coil. The internal source increases the available signal, narrows the apparent width of the guidewire, and allows the use of fast imaging sequences.
引用
收藏
页码:891 / 897
页数:7
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