RADIOGRAPHY - DIGITAL
FLUOROSCOPY EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
Define digital fluoroscopy (DF). - Correct Answers -A digital x-ray imaging system that
produces dynamic images obtained with an area x-ray beam.
What is the difference between conventional and digital fluoro? - Correct Answers -The
nature of the image and the manner in which it is digitized.
What are the three advantages of digital fluoroscopy over conventional fluoroscopy? -
Correct Answers -The speed of image acquisition, post-processing to enhance image
contrast, and the spatial resolution.
What determines the spatial resolution? - Correct Answers -The image matrix and size
of the image intensifier. It's limited by pixel size.
How is the pixel size calculated in digital fluoroscopy? - Correct Answers -DF pixel size
= image intensifier size / matrix.
What is added to a conventional fluoro system for digital fluoroscopy? - Correct
Answers -One computer, two monitors, and a more complex operating system.
In which mode does the x-ray tube operate? - Correct Answers -In radiographic mode.
What determines the speed of acquisition, processing, and transfer to the output
device? - Correct Answers -The dynamic range of each pixel, number of pixels, and the
method of storage.
What is the principal advantage of digital fluoroscopy exams? - Correct Answers -Image
subtraction techniques.
What are some disadvantages of digital fluoroscopy exams? - Correct Answers -
Requires the use of an area beam, and there's reduced image contrast (scatter from
area beam).
How can image contrast be improved in digital fluoroscopy? - Correct Answers -By the
use of subtraction techniques.
FLUOROSCOPY EXAM QUESTIONS
WITH COMPLETE SOLUTIONS
Define digital fluoroscopy (DF). - Correct Answers -A digital x-ray imaging system that
produces dynamic images obtained with an area x-ray beam.
What is the difference between conventional and digital fluoro? - Correct Answers -The
nature of the image and the manner in which it is digitized.
What are the three advantages of digital fluoroscopy over conventional fluoroscopy? -
Correct Answers -The speed of image acquisition, post-processing to enhance image
contrast, and the spatial resolution.
What determines the spatial resolution? - Correct Answers -The image matrix and size
of the image intensifier. It's limited by pixel size.
How is the pixel size calculated in digital fluoroscopy? - Correct Answers -DF pixel size
= image intensifier size / matrix.
What is added to a conventional fluoro system for digital fluoroscopy? - Correct
Answers -One computer, two monitors, and a more complex operating system.
In which mode does the x-ray tube operate? - Correct Answers -In radiographic mode.
What determines the speed of acquisition, processing, and transfer to the output
device? - Correct Answers -The dynamic range of each pixel, number of pixels, and the
method of storage.
What is the principal advantage of digital fluoroscopy exams? - Correct Answers -Image
subtraction techniques.
What are some disadvantages of digital fluoroscopy exams? - Correct Answers -
Requires the use of an area beam, and there's reduced image contrast (scatter from
area beam).
How can image contrast be improved in digital fluoroscopy? - Correct Answers -By the
use of subtraction techniques.
