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The defense date of the thesis is 2007-07-20
The current date is 2019-05-23
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URN etd-0720107-143923 Statistics This thesis had been viewed 1673 times. Download 17 times. Author Yao-li Huang Author's Email Address No Public. Department Mechanical Engineering Year 2006 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 115 Title Temperature simulation analysis of cryosurgey in the treatment of benign or malignant cutaneous
Keyword Cryosurgery Bioheat transfer Phase change Phase change Bioheat transfer Cryosurgery Abstract Cryotherapy involves freezing abnormal areas on the tumors
which has found several areas of application. In the treatment of internaltumors, examples include breast cancer, cervical precancerous lesions, liver cancer, kidney cancer, lung cancer, pancreas cancer, and prostate cancer.
A variation on the spray nozzle technique is the use of an insulating plastic cone with the handheld spray unit. The appropriately sized cone is placed directly on the lesion, confining the spray of cryogen to the area exposed by the tip of the cone. This cone-spray technique provides a deeper depth of freeze more quickly than use of the spray alone and allows the cryogen to be applied directly to the target tissue.
The objective of this project is to investigate the effect of cryosurgery in the treatment of cutaneous lesions by performing numerical simulation. Building an thermal model for temperature distribution calculation that includes different cold sources and the thermal properties of various tissues in the treatment of benign and malignant cutaneous lesions. The opening size and shape of the plastic cone device will be explored to investigate its spray effect. Numerical study will be performed to demonstrate the transient variation of temperature distribution during cryosurgery to avoid inadequate or over treatment. The aim is to completely freeze and destroy the tumor or benign cutaneous lesions while minimizing the amount of healthy tissue destruction to achieve the desired safe, effective and acceptable outcome.
Advisor Committee Hong-Sen Kou - advisor
Ji-Jen Lee - advisor
Wen-li Lin - co-chair
Xian-qun Lin - co-chair
Files Date of Defense 2007-07-13 Date of Submission 2007-07-20