<；P>；PROBLEM TO BE SOLVED: To provide a stent formed by connecting adjacent annular bodies by connecting parts which allows a user to confirm connecting parts located at least in a middle region in the axial direction of the stent and facilitates insertion of a catheter into a branching blood vessel located at a part where the stent is indwelled, and also to provide a blood vessel dilator. <；P>；SOLUTION: The stent 1 includes a plurality of annular bodies 2 arranged in the axial direction and connecting parts 3 connecting the adjacent wavelike annular bodies in the axial direction. The connecting parts 3 located at least in a middle region of the stent in the axial direction includes imaging markers 4. The imaging marker 4 has an index part that is asymmetrical with respect to the center axis of the stent 1 and is directed to the same circumferential direction. <；P>；COPYRIGHT: (C)2011,JPO&INPIT
