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Cancer treatment by x-ray holography

The objective of radiation treatment of cancer is eradication of the tumor. The disadvantage of radiation therapy is that it may injure or destroy adjacent normal tissues. Therefore, if we could focalize the radiant energy exactly on the tumor cells, then the adjacent normal tissues would be protected. X-ray holography permits us the realization of this idea. In this paper three methods are proposed in order to record and reconstruct required holograms by x-ray and the advantages and disadvantages of each method are discussed.