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Canon Medical Systems Corporation has published a patent application for a medical device operation method and drug treatment support system. The system utilizes nano-particles or liposomes to deliver drug particles to cancer tissues, taking advantage of the enhanced permeability and retention effect. The method involves monitoring the accumulation of drug particles in tissue using CT imaging and applying a treatment effect when a specific condition is met. The invention aims to improve drug delivery and treatment efficacy in cancer tissues. [Extracted from the article]