乳房射影 Mammography 的安全性 可以常作嗎?
"If a woman had annual screening mammography for fifty years (two x-ray views per breast), beginning at age 40 years and continuing until age 90, she will have received a total of 10 rads to 20 rads per breast over the course of 50 years."
Benefits and Risks of Mammography
- small goatLv 61 decade agoFavorite Answer
From Wikipedia, the free encyclopedia
Mammography.Mammography is the process of using low-dose X-rays (usually around 0.7 mSv) to examine the human breast. It is used to look for different types of tumors and cysts. Mammography has been proven to reduce mortality from breast cancer.
The majority of health experts agree that the risk of breast cancer for asymptomatic women under 35 is not high enough to warrant the risk of radiation exposure. For this reason, and because the radiation sensitivity of the breast in women under 35 is possibly greater than in older women, most radiologists will not perform screening mammography in women under 40. However, if there is a significant risk of cancer in a particular patient (BRCA positive, very positive family history, palpable mass), mammography may still be important. Often, the radiologist will try to avoid mammography, by using ultrasound, or MRI imaging.
Mammography facilities in the United States and its territories (including military bases) are subject to the Mammography Quality Standards Act (MQSA).