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Clinical use of intensity-modulated radiotherapy: part II

Radiotherapy Department and Head and Neck Unit, Institute of Cancer Research and Royal Marsden NHS Trust, London and Surrey, UK

View larger version (85K): [in a new window]   Figure 1. A dose distribution for the treatment of prostate cancer using a five-field technique. Colourwash: 95% green, 70% yellow, 50% orange, 20% dark blue.

View larger version (142K): [in a new window]   Figure 2. A dose distribution for the irradiation of pelvic lymph nodes (pink outline) and bowel (blue outline). 60 Gy (yellow colourwash) is delivered as a boost to an enlarged node thought to be a metastasis, the remainder of the nodes receive 55 Gy (orange colourwash).

View larger version (62K): [in a new window]   Figure 3. A dose distribution for adjuvant pelvic node irradiation for endometrial cancer.

View larger version (56K): [in a new window]   Figure 4. Isodose comparisons between standard conventional radiotherapy and intensity-modulated radiotherapy (IMRT) for breast cancer. Image provided by the Breast Technology Group, Royal Marsden Hospital/ Institute of Cancer Research, Sutton, Surrey, UK.