Ch 1, 2, 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | increases the number of shades of gray.
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| A systems ability to respond to varying levels of exposure, including very minimal exposure, is referred to as: | show 🗑
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| show | DICOM
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| the higher the number of pixels within a fixed FOV, the: | show 🗑
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| show | It is high-pass filtering (boosts contrast of higher spatial frequencies)
Can increase noise
Improves visibility by increasing contrast along edges
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| All of the following are true regarding digital imaging except: | show 🗑
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| show | the orbits are very round
the superior orbital fissures are usually seen within the orbits
the petrous ridges are in the lower third of the orbits
the skull itself tends to appear a bit more oblong/oval due to the angular of the CR
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| show | Godfrey Hounsfield
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| A perfect image processing system would have an MTF of | show 🗑
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| show | Lateral
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| Digital image quality is improved with: | show 🗑
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| show | digital
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| Window level parameters control image | show 🗑
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| show | the pixel size is increased
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| show | image grayscale values; contrast
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| show | the US military
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| The more light spread, the ________ the MTF. | show 🗑
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| The number of bits per pixel is known as bit: | show 🗑
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| show | K^IND
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| CR acquires an image through | show 🗑
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| show | pixel size
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| The higher the DQE of a system, the radiation exposure necessary to produce a quality image is: | show 🗑
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| What is the BEST view for the ethmoid sinuses? | show 🗑
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| A continuously changing signal is known as: | show 🗑
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| show | 512
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| Which of the following statements is not true? | show 🗑
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| Deviation index is a logarithmic expression of the difference between: | show 🗑
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| show | Detective Quantum Efficiency
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| show | Nyquist theorem
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| show | head only
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| In the SMV (Schuller) projection, the mandible is: | show 🗑
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| show | loss of information
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| Which artifact can occur when the sampling frequency is not greater than twice the frequency of the input signal? | show 🗑
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| show | Units to quantify are Joule/kg or GYa
Air KERMA stands for: Kinetic Energy Release in Mass of Air
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| show | contrast resolution
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| show | signal to noise ratio
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| show | Excessive CR angulation
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| show | K^TGT
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| The exposure latitude of digital projection radiography responds in a ___________ manner. | show 🗑
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| The amount of detail present in any image is known as ________ resolution. | show 🗑
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| show | Digital systems have superior contrast resolution compared to film.
Film as superior spatial resolution compared to digital.
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| show | histogram
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| Raw data used to form the image histogram are compared with: | show 🗑
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| show | It is impossible to achieve an MTF of 100% due to the noise inherent in a digital system
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| show | Alara principle has not been followed
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| How often the analog signal is sampled as it is digitized is the: | show 🗑
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