Dose of radiation per study in mammography is
**Core Concept**
Mammography is a specialized form of x-ray imaging used for breast cancer screening and diagnosis. The dose of radiation in mammography is a critical factor in assessing the risk-benefit ratio of this procedure.
**Why the Correct Answer is Right**
The dose of radiation per study in mammography is approximately 0.4 millisieverts (mSv). This is because mammography uses a low-energy x-ray beam, which is tightly focused on the breast tissue, minimizing exposure to surrounding tissues. The American College of Radiology recommends a maximum dose of 0.4 mSv per mammography examination.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not a valid answer, as it does not provide a specific dose of radiation.
**Option B:** This option is incorrect, as the dose of radiation in mammography is not in the range of 10-20 mSv, which is more typical of CT scans.
**Option C:** This option is also incorrect, as the dose of radiation in mammography is not in the range of 1-2 mSv, which is more typical of chest x-rays.
**Clinical Pearl / High-Yield Fact**
The dose of radiation in mammography is typically lower than that of other x-ray examinations, making it a relatively safe procedure for breast cancer screening and diagnosis.
**Correct Answer: C. 1-2 mSv.**