Match the following choices with the statements as each relates to exposure conversions.
a. decreased density
b. focal spot size
c. longer scale of contrast
d. grid ratio
e. receptor speed
f. increased mAs by 2x
g. additive pathology
h. higher amount of contrast
i. destructive pathology
j. density-distance relationship
1. exposure maintenance formula
2. switch from 400 RS to 300RS with no compensation
3. affects radiographic contrast with a direct relationship
4. 5 cm increase in tissue thickness
1. j. density-distance relationship
2. a. decreased density
3. d. grid ratio
4. f. increased mAs by 2x
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Which of the following chambers of the heart has the thickest walls?
A) Left atrium B) Right atrium C) Left ventricle D) Right ventricle
What is the cardiac rhythm depicted on the following electrocardiogram?
a. Atrial fibrillation c. Paroxysmal atrial tachycardia b. Premature atrial beats d. Premature ventricu-lar contractions