Radiography
How will increasing Kvp affect dose in radiography vs CT in general?
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Beam filters affect
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Ionizing radiation example(s)
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Increasing Kvp will
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Soft x-ray has _____ frequency in comparison to hard x-ray
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Gamma rays have _____ wavelength in comparison to MRI RF
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Gamma rays are emitted by _____. X-rays are emitted by _____
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In x-ray machines, the focusing cup is used to
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The primary determinant of blur is
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Portable x-ray devices have limited heat loading because of
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The heel effect is due to
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In T-spine x-rays the upper thoracic spine should align with the
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The ratio of x-ray production to heat emission is lowest in
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In Bremsstrahlung, electrons travelling close to the nucleus emit _____ energy x-rays
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Bremsstrahlung x-ray spectrum for a given kVp is
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Beam intensity is
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The main purpose of increasing kVp by 15% and decreasing mA by 50% is to
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Triple phase (less ripple=more efficient) generator produce radiographs with
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Succussvie polyenergetic beam filtration along its path causes HVL to
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Monoenergetic beam has ________ HVL than a polyenergetic beam, for a given kVp
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Decreasing the target atomic number with shift the produced x-ray quality to the
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As the atomic number decreases, the probability of producing auger electrons _____
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The x-ray tube is sealed with
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Dual energy x-ray can differentiate _____ types of tissues
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The predominant interaction(s) in mammography
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PE interacts with ______ shell electron. Compton interact with ______ shell electron.
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Both PE and compton cause ionization
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In diagnostic radiography, _______ is a major source of occupational exposure and _______ is a major source of patient dose.
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Decreased collimation causes
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As the grid ratio increases, the bucky factor ______
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Unsharpness is
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Increased magnification always causes less blurry images
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DQE is ________ directly proportional to MTF, _________ proportional to spatial resolution, and _______ proportional to SNR
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Pixel pitch in DR is
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In modern radiography machines, how acceptable image contrast with high kVp is produced?
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Window level affects ________. Window width affects ________
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mA is the main influencer of ________. kVp is the main influencer of ________
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Using a higher kVp generally will _______ dose in thin patients and ________ dose in obese patients
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Increasing kVp is warranted in imaging patients with
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In radiography, AEC is a
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_________ can be used to eliminate or decrease lateral dispersion
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In CR, increasing dose will improve the ________ but not _________  spatial resolution
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X-ray beams used in mammography have all of the following, EXCEPT
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In mammography, the effective anode angle=
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Motion primarily affects
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In comparison to general radiography, mammography has ______ receptor air kerma, _______ optic density, and ________ view boxes
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Dark noise is _________ in the detector, and are managed by ________
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Mean Glandular Dose should not exceed _____ for  ______
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________ has the smallest focal spot
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________ uses lowest mA
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________ uses highest mA
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