Preview: MEDICAL IMAGING / RADIOGRAPHY

A major advantage of ultrasound is that it: Context: district hospital. [Medical Imaging/Radiography Degree Graduate Practice Set 18, Case 6]

A Uses high-dose ionizing radiation B Always penetrates bone perfectly C Requires radioactive tracers D Cannot image soft tissue E Uses non-ionizing sound waves

A stochastic radiation effect is characterized by: Context: regional referral hospital. [Medical Imaging/Radiography Degree Graduate Practice Set 18, Case 23]

A No relationship to radiation B Probability increasing with dose without a clear threshold C Immediate mechanical injury D Only equipment damage E Severity always increasing above a fixed threshold only

A stochastic radiation effect is characterized by: Context: regional referral hospital. [Medical Imaging/Radiography Degree Graduate Practice Set 18, Case 7]

A Probability increasing with dose without a clear threshold B No relationship to radiation C Severity always increasing above a fixed threshold only D Immediate mechanical injury E Only equipment damage

In CT, increasing pitch while other factors remain comparable can generally: Context: quality-assurance review. [Medical Imaging/Radiography Degree Graduate Practice Set 18, Case 19]

A Eliminate all radiation B Prevent reconstruction C Change scan speed and radiation dose characteristics D Remove the need for protocol optimization E Convert CT to MRI

MRI signal fundamentally depends on properties of: Context: teaching hospital. [Medical Imaging/Radiography Degree Graduate Practice Set 18, Case 128]

A Ionizing X-rays only B Gamma cameras only C Visible photons D Ultrasound crystals only E Nuclei such as hydrogen interacting with magnetic fields and radiofrequency pulses

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MEDICAL IMAGING / RADIOGRAPHY – DEGREE QZ18

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