A portable radiograph is taken of a thick body part using a 10:1 stationary grid. The image produced demonstrates a contrast factor (K) of 1.7 . A second radiograph is taken with a different grid of unknown specifications, and the K-value is 2.2. What conclusion can you reach regarding the two grids?
What will be an ideal response?
The second grid is most likely a higher ratio grid as the change in contrast is greater. A greater K-value indicates greater contrast improvement which is related to grid ratio, grid frequency, and lead content of the grid.
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The British Doctors Study
a. Is an example of a cohort study b. Published findings in 2004 c. Examined the relationship between smoking and lung cancer d. a and b only e. All of the above
Congenital rubella pneumonitis: ________
Fill in the blank with correct ICD-10.
Eligibility rosters come with various information including active, terminated, and:
a. pending members. b. new members. c. deceased members. d. censored members.