| 摘要 |
<p>A guide wire (1A) shown in FIG. 1 is constituted by a core member (2) and a coil (3) wound around an outer periphery of the core member (2) all around the length of the core member (2). Stopper members (4) and (5) are provided in both ends of the core member (2), respectively. At least either of the core member (2) and the coil (3), thin film thereon, or a thin plate placed thereon is constituted by an alloy containing a nickel of 45 wt % or more, an iron of 3 to 6 wt %, a chrome of 10 to 25 wt % and a molybdenum of 10 to 20 wt %, or a metal material having a magnetic susceptibility at a temperature close to a room temperature (about 10 to 40 DEG C) in an outer diametrical direction of preferably 0.5 x 10<-4> to 5.0 x 10<-4>. The guide wire (1A) of this kind generates an artifact 1 to 7 times an actual outer diameter on an MRI image photographed by a gradient echo method, thereby suitably recognized in a monitor image by the MRI. <IMAGE></p> |
