|
Dose
Limiting Organs
Skin
|
60
Gy in 6 weeks |
Cord
|
45
Gy in 4.5 weeks |
Kidneys
|
20
Gy in 2 weeks |
Rectum
|
50
Gy in 5 weeks |
Lung
|
Whole
: 20 Gy in 2 weeks
Partial
: 40 Gy in 4 weeks |
Small
bowel |
40
Gy in 4 weeks |
Liver
|
24
Gy in 3 weeks |
Lens
|
5
Gy in any period of time |
- You are always treating the skin
- Must be careful when treating the
prostate because the small bowel is right there
- When treating tangents on the breast,
1 – 2 cm of lung must be included in the field
- Patient will develop subclinical
fibrosis is the 1 –2 cm that is treated
- Tolerance of the lung is routinely
exceeded
- If tolerance of the lung is exceeded
the lung is damaged permanently
* #1 risk factor in the U.S. of liver
cancer is alcoholism and hepatitis C (you cannot irradiate an unhealthy
liver!)
|
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