Chapter 14 X-ray Breast Imaging: Methods and Radiation Safety Aspects Flashcards
1
Q
Dose should not exceed ____ per image and average no more than ____ with 4.5cm compression
A
3 mGy
2 mGy
2
Q
When should a patient begin baseline mammograms?
A
by age 40 or before onset of menopause
3
Q
Breast tissue is a ______ type of tissue
A
more sensitive
4
Q
Younger females have a more dense breast tissue causing
A
higher risk for false positives
5
Q
What are the two main projections for mammograms
A
CC (craniocaudal) and MLO (mediolateral oblique)
6
Q
What is the target made of?
A
molybdenum (z=42) 0.03 mm filter and rhodium (z=45) 0.025 mm filter
7
Q
What type of material is used on larger breasts
A
rhodium
8
Q
the glass window is replaced with what to allow for characteristic x-ray
A
beryllium (z=4)
9
Q
What is the typical kVp for mammograms
A
28-31
