Photodynamic Therapy (PDT) Diagnote The Meningeal-Colloid Cancer

As a new method to diagnote and cure tumour , photodynamic therapy(PDT) is in the ascendant. Having studied the theory of photodynamic therapy (i.e. photosensitivity reaction)and looked up many therap case and relevant literature,bom Chinese and overseas, this article proposes to substitute high-power semi-conductor laser for the frequent-used, He-Ne laser , Gu-steam laser , tuned-dye laser , and so on ,so as to overcome some problems on their power , wavelength , cost, lifespan , and so on.To the meningeal-colloid cancer ,one of the tumours difficult to cure . this article puts forward with the design for the therapy system : the selection of semi-conductor laser, the driver-source design of laser , the manipulator design of laser , and the design of the optical fiber , and it aslo mainly design two type of optic needle for various meningeal-colloid cancers , as follows: plane-shooting optic needle , pillar-side-shooting optic needle.