Medical devices, such as endoprostheses, are disclosed. In some embodiments, an endoprosthesis includes a tubular body including a first material having a first mass attenuation coefficient; and a coating on less than or equal to half of a (e.g., any) circumferential cross section occupied by the body....http://www.google.fr/patents/US20060276910?utm_source=gb-gplus-shareBrevet US20060276910 - Endoprostheses
