| 摘要 |
According to the invention, there is provided a radiation source for use in endovascular radiation treatment which comprises one or more, preferably at least two treating elements or seeds comprising a radiation emitting element and means for containment of said radiation emitting element, which radiatio n source is characterized in that said seeds are sequentially, directly and movably linked to each other and/or to the transfer wire. Thereby the seeds form a flexible radiation source. The seeds may be linked to each other by magnetic forces and/or may be mechanically linked, e.g. by male and female means for coupling or by a joining member extending throughout the entire length of the radiation source. There is further provided an apparatus for endovascular radiation treatment comprising an elongated catheter, optionall y a guide wire in a separate lumen and the radiation source as defined above. According to another aspect, there is provided a method for endovascular radiation treatment comprising the steps of directing an elongated catheter to the selected side to be treated, introducing a radiation source as defined above into the catheter at its proximal end portion, moving said radiation source to the distal end portion of the catheter preferably by use of a transfer wire, maintainingsaid radiation source at that distal end portion for a determined period of time and retracting said radiation source to the proximal end portion of the catheter preferably by use of a transfer wire.</ SDOAB>
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