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J Korean Soc Ther Radiol > Volume 12(1); 1994 > Article
Journal of the Korean Society for Therapeutic Radiology 1994;12(1): 117-122.
Development of Detachable IORT Table for Colorectal Cancer
Myung Se Kim, Joon Ha Lee
1Department of Therapeutic Radiology, Biomedical Engineering College of Medicine, Yeungnam University, Taegu, Korea.
2Department of Oncology, Biomedical Engineering College of Medicine, Yeungnam University, Taegu, Korea.
3Department of Biomedical Engineering, College of Medicine, Yeungnam University, Taegu, Korea.
ABSTRACT
In spite of remarkable improvement of surgical skills and anesthesia, local failure still occurred in 36-45% of locally advanced colorectal cancer after curative resection with or without pre-or post-operative irradiation. Intraoperative radiation therapy (IORT) is the ideal modality which respectable lesions are removed surgically and the remaining cancer nests are sterilized by irradiation during a surgical procedure. Therefore, the excellent local control without the damage of the adjacent normal tissues can be achieved. In IORT, judicious set up of the treatment cone on the treatment surface of the patient is required for accurate and homogenous dose distribution within treatment field, especially on the slopping surface of sacrum and pelvic sidewall which are the common sites of the local recurrence in rectal cancer. For this purpose, adequate coordination of gantry rotation and table tilting are essential. Adjusting gantry rotation is not difficult but tilting of the table is impossible inconventional treatment couch. Department of Therapeutic Radiology in Yeungnam University Medical Center developed the IORT table for colorectal cancer which is easy to set up and detach on head-down is about 30 degree which is efficient and easy-to-use, not only for IORT but also for colorectal surgery. So far, authors performed IORT with newly developed treatment table in 2 patients with rectal cancer and we found that this newly developed table could contribute in improving the dose distribution of IORT and surgical procedure for colorectal cancer.
Key Words: Colorectal cancer, Detachable, tilting IORT table
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