MGMT 100 Chapter 3 Exam Questions And Answers
/. A histogram displays the useful signal by locating ______.
1 All pixel values
2 Maximum and minimum signal
3 Maximum signal only
4 Minimum signal only
/.The shape of the histogram is anatomy specific.
1 true
2 false
/.The Nyquist theorem states that the ______.
1 Sampling frequency must be equal to the input signal bandwidth
2 Input signal bandwidth must be twice the sampling frequency
3 Sampling frequency must be twice the input signal bandwidth
4 Input signal bandwidth must be sampled twice
/.If too few pixels are sampled, the result will be ______.
1 High resolution
2 Low resolution
3 High contrast
4 Low contrast
/.Loss of detail in a digitally processed image ______.
1 Occurs because of the number of conversions
2 Is extremely minimal compared with film/screen
3 Is equal to film/screen
4 Has almost no impact on the image
/.A wraparound image or image aliasing occurs when ______.
1 Sampling occurs twice per cycle
2 Spatial frequency is less than the Nyquist frequency
3 Sampling occurs less than twice per cycle
4 Spatial frequency is equal to the Nyquist frequency
/.Image aliasing is similar to the moiré effect caused by grid error.
, 1 true
2 false
/.In an effort to display the pixels for the area of interest when exposure is greater or
less than what is needed to produce an image, ______ occurs.
1 Overexposure
2 Underexposure
3 Automatic collimation
4 Automatic rescaling
/.Automatic rescaling can be substituted for appropriate technical factors.
1 true
2 false
/.Changing the slope of the look-up table graph will increase or decrease ______.
1 Density
2 The number of pixels
3 The matrix size
4 Contrast
/.If all of the shades were left in an image after processing, the contrast would be
______.
1 Too low
2 Too high
3 Sufficient
4 Unaffected
/.Focal spot and OID affect image sharpness ______.
1 Only in film/screen imaging
2 Only in digital imaging
3 In both film/screen and digital imaging
4 In neither film/screen nor digital imaging
/.Amplification of the frequencies of the areas of interest is known as ______.
1 Algorithm application
2 Center enhancement
3 Edge enhancement
4 Masking
/. A histogram displays the useful signal by locating ______.
1 All pixel values
2 Maximum and minimum signal
3 Maximum signal only
4 Minimum signal only
/.The shape of the histogram is anatomy specific.
1 true
2 false
/.The Nyquist theorem states that the ______.
1 Sampling frequency must be equal to the input signal bandwidth
2 Input signal bandwidth must be twice the sampling frequency
3 Sampling frequency must be twice the input signal bandwidth
4 Input signal bandwidth must be sampled twice
/.If too few pixels are sampled, the result will be ______.
1 High resolution
2 Low resolution
3 High contrast
4 Low contrast
/.Loss of detail in a digitally processed image ______.
1 Occurs because of the number of conversions
2 Is extremely minimal compared with film/screen
3 Is equal to film/screen
4 Has almost no impact on the image
/.A wraparound image or image aliasing occurs when ______.
1 Sampling occurs twice per cycle
2 Spatial frequency is less than the Nyquist frequency
3 Sampling occurs less than twice per cycle
4 Spatial frequency is equal to the Nyquist frequency
/.Image aliasing is similar to the moiré effect caused by grid error.
, 1 true
2 false
/.In an effort to display the pixels for the area of interest when exposure is greater or
less than what is needed to produce an image, ______ occurs.
1 Overexposure
2 Underexposure
3 Automatic collimation
4 Automatic rescaling
/.Automatic rescaling can be substituted for appropriate technical factors.
1 true
2 false
/.Changing the slope of the look-up table graph will increase or decrease ______.
1 Density
2 The number of pixels
3 The matrix size
4 Contrast
/.If all of the shades were left in an image after processing, the contrast would be
______.
1 Too low
2 Too high
3 Sufficient
4 Unaffected
/.Focal spot and OID affect image sharpness ______.
1 Only in film/screen imaging
2 Only in digital imaging
3 In both film/screen and digital imaging
4 In neither film/screen nor digital imaging
/.Amplification of the frequencies of the areas of interest is known as ______.
1 Algorithm application
2 Center enhancement
3 Edge enhancement
4 Masking
