Dose By Source
In radiation therapy, the amount of radiation varies depending on the type and stage of cancer being treated. For curative cases, the typical dose for a solid epithelial tumor ranges from 60 to 80 Gy, while lymphomas are treated with 20 to 40 Gy. Preventive (adjuvant) doses are typically around 45–60 Gy in 1.8–2 Gy fractions (for breast, head, and neck cancers).
The average radiation dose from an abdominal X-ray is 1.4 mGy, that from an abdominal CT scan is 8.0 mGy, that from a pelvic CT scan is 25 mGy, and that from a selective CT scan of the abdomen and the pelvis is 30 mGy.
Read more about this topic: Gray (unit)
Famous quotes containing the words dose and/or source:
“When a mother quarrels with a daughter, she has a double dose of unhappiness—hers from the conflict, and empathy with her daughter’s from the conflict with her. Throughout her life a mother retains this special need to maintain a good relationship with her daughter.”
—Terri Apter (20th century)
“The ungentlemanly expressions and gasconading conduct of yours relative to me yesterday was in true character of yourself and unmask you to the world and plainly show that they were ebullitions of a base mind ... and flow from a source devoid of every refined sentiment or delicate sensations.”
—Andrew Jackson (1767–1845)