Chapter 39 Flashcards
The average ESD per view for mammography is:
8 mGy/view
Which of the following are reasons that extremity radiography is not a high radiation dose concern:
- No gonadal exposure
- Use of low technique
- Minimal contribution to MMD
1, 2, & 3
In order to reduce patient dose, we should use the ___ kVp, ___ mAs, and the ___ screen speed.
highest, lowest, fastest
The 100-250 Gy Rule applies to:
the unknowingly pregnant patient
A .5mm Pb shield will reduce a 75 kVp beam by:
88%
T/F: Shielding should only be utilized for patients that are of childbearing years.
False
In contact mammography, the ESE should not exceed _______ mGy per view.
1mGy
T/F: In order to elicit a fetal response to radiation, the fetal dose must be above 250 mGy.
True
The ACR Appropriateness Criteria is based on:
effective dose
All of the following are particularly sensitive organs that require shielding when in or near the primary beam except the:
A. breast tissue
B. thymus gland
C. lens of the eye
D. gonads
B. thymus gland
By positioning a patient PA, we reduce the dose to the breast tissue to approximately ________ of the AP projection
1%
The NCRP has determined that medical dose to the average US citizen has increased to ___ mSv per year.
3.2
As technologists, we should shoot for a repeat rate no higher than:
5%
Glandular Dose in Mammography is estimated to be ______ of the ESD.
15%
