DIGITAL RADIOGRAPHY
AND PACS CHAPTER 2 & 3
in medical imaging, there are two types CORRECT ANSWERS analog and digital
analog images are those that are very familiar to us such as CORRECT ANSWERS paintings and
printed photography
images that are continuous and not broken into individual pieces CORRECT ANSWERS analog
are recorded as multiple numeric values and are divided into an array of small elements that
can be processed in many different ways. CORRECT ANSWERS digital
digital assigns a numerical value to each signal point either as __________ or ____________
CORRECT ANSWERS electrical impulse or a light photon
, refers to a device or system that captures or measures a continuously changing signal CORRECT
ANSWERS analog
in digital xray during computer data processing, the image becomes CORRECT ANSWERS
digitalized and is sampled multiple times
the critical characteristics of a digital image are CORRECT ANSWERS spatial resolution, contrast
resolution, noise, and dose efficiency (of the receptor)
picture element and is the smallest element in a digital image CORRECT ANSWERS pixel
if you have ever magnified a digital picture to the point that you see the image as smalll squares
of color, you have seen a CORRECT ANSWERS pixel
the digital image is separated into pixels with discrete ____________ values CORRECT ANSWERS
whole numbers only
the process of associating the pixels with discrete values defines CORRECT ANSWERS maximum
contrast resolution
the size of the pixel is ___________ related to the amount of spatial resolution or detail in the
image. CORRECT ANSWERS directly
the smaller the pixel, ___________ the detail CORRECT ANSWERS greater
each pixel contains _______ or _________ of information CORRECT ANSWERS pieces or bits
the number of bits within a pixel is know as CORRECT ANSWERS pixel bit depth
AND PACS CHAPTER 2 & 3
in medical imaging, there are two types CORRECT ANSWERS analog and digital
analog images are those that are very familiar to us such as CORRECT ANSWERS paintings and
printed photography
images that are continuous and not broken into individual pieces CORRECT ANSWERS analog
are recorded as multiple numeric values and are divided into an array of small elements that
can be processed in many different ways. CORRECT ANSWERS digital
digital assigns a numerical value to each signal point either as __________ or ____________
CORRECT ANSWERS electrical impulse or a light photon
, refers to a device or system that captures or measures a continuously changing signal CORRECT
ANSWERS analog
in digital xray during computer data processing, the image becomes CORRECT ANSWERS
digitalized and is sampled multiple times
the critical characteristics of a digital image are CORRECT ANSWERS spatial resolution, contrast
resolution, noise, and dose efficiency (of the receptor)
picture element and is the smallest element in a digital image CORRECT ANSWERS pixel
if you have ever magnified a digital picture to the point that you see the image as smalll squares
of color, you have seen a CORRECT ANSWERS pixel
the digital image is separated into pixels with discrete ____________ values CORRECT ANSWERS
whole numbers only
the process of associating the pixels with discrete values defines CORRECT ANSWERS maximum
contrast resolution
the size of the pixel is ___________ related to the amount of spatial resolution or detail in the
image. CORRECT ANSWERS directly
the smaller the pixel, ___________ the detail CORRECT ANSWERS greater
each pixel contains _______ or _________ of information CORRECT ANSWERS pieces or bits
the number of bits within a pixel is know as CORRECT ANSWERS pixel bit depth
