10 Questions
What is the primary method to achieve magnification imaging?
Increasing the OID
What happens to the magnification achieved as the patient thickness increases?
It varies with depth in the patient
What is a limitation of using magnification imaging for large body regions?
It is not possible to use magnification imaging for large body regions
What is a consequence of increasing the OID in magnification imaging?
Increase in patient dose
What is the effect of increasing the OID on image sharpness?
Decrease in image sharpness due to geometric blur
Why is it necessary to reduce the focal spot size when using magnification techniques?
To improve the overall sharpness of the image
How does magnification improve spatial resolution?
By increasing the size of the image compared to the unsharpness of the image receptor
What is the basis for choosing the kV setting in screen-film systems?
Required contrast
What is the purpose of choosing the mAs in screen-film systems?
To produce a suitable optical density for the region of clinical interest
What is a limitation of digital magnification imaging?
Enlarges the pixels as well as the image
This quiz covers the principles of magnification imaging in radiology, including how it's achieved and its variation with depth in the patient.
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