| 摘要 |
A stent based apparatus and method for directing external beam radiation comprising a series of devices and a system of implanting these devices within a patient to direct therapeutic radiation given to the patient. Each of the devices can deliver a tiny gold fiducial (or fiducial constructed of another material capable of acting as a target to direct external beam therapeutic radiation) to a target area in the vicinity of a cancer or other lesion that is considered an appropriate target for external beam radiation therapy, using, for example, the beam radiation system referred to as the Cyberknife radiation delivery system. The current system and devices envision placement of gold fiducials through hollow organs in the body (for example, the gastrointestinal tract, the ureter, blood vessels, bile duct, or the cerebro spinal fluid space). This implantation method can utilize conventional endoscopy or angiography.
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