Chapter 3 Key Terms Crossword

loss of digital information because of a fluctuating signal
software function that allows historical information to be gathered from digital storage
conversion of the digital image using contrast enhancement parameters
occurs when exposure is greater or less than the optimal amount to produce a diagnostic image
the frequency of a signal that exactly matches the Nyquist frequency, resulting in zero-amplitude signal caused by phase shifts
enhancement occurs when fewer pixels in the neighborhood are included in the signal average; the smaller the neighborhood the greater the enhancement
technique for the enhancement of contrast and edge that amplifies the frequencies of areas of interest that are known
graphic representation of all the digitally recorded signals of a digital x-ray exposure
software function that allows text or markers to be digitally added to an image
identification of the top or side of an image
amount of information gathered from pixel storage
process of sewing together multiple images to form one continuous image
reference histogram of the luminescence values derived during image acquisition
result of averaging each pixel's frequency with surrounding pixel values to remove high frequency noise
computer function that allows images to be sent to specified reading stations
when sampling a signal such as the conversion from an analog to a digital image, the sampling frequency must be greater than twice the bandwidth of the input signal so that the reconstruction of the original image will be nearly perfect
input information regarding patient age, identifying number, ordering physician
used to blacken out the white collimation borders in a digital image, effectively eliminating veil glare
low-pass filtering, the result of averaging each pixel's frequency with surrounding pixel values to remove high frequency noise
amount of detail or sharpness in a digital images
image manipulation parameter that changes screen image brightness, usually through the use of a mouse
image manipulation parameters that changes screen image contrast