You have completed a chest radiograph on a 2-month-old infant using a restraining device at a 72" SID.Because of the design of the device, your OID is suboptimum.The image reveals good resolution of the bony anatomy but the pulmonary vasculature is blurred.The EI value is 2040.In an effort to improve the quality of the repeat image, the competent radiographer would
A) raise the mA and decrease the exposure time.
B) decrease the SID and maintain the same mAs.
C) switch to small focal spot.
D) ask for mild sedation of the infant to decease respiration.
Correct Answer:
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Q18: Poor resolution is caused by unacceptable levels
Q19: As focal spot size decreases,
A)umbra is improved.
B)penumbra
Q20: Factors affecting recorded detail include
A)kVp.
B)radiographic grids.
C)mAs.
D)focal spot
Q21: When the sampling frequency is less than
Q22: Calculate the penumbra for an image taken
Q24: Match the following choices with respect to
Q25: Imaging noise is different from quantum noise
Q26: Match the following choices with respect to
Q27: Calculate the penumbra for an image taken
Q28: Match the following choices with respect to
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