DIGITAL RADIOGRAPHY/ COMPUTED RADIOGRAPHY:
PRINCIPLES-TEST PRACTICE QUESTIONS WITH 100%
COMPLETE AND CORRECT ANSWERS/A+ GRADE/2024
VERSION
Radiography was first introduced by_______, in what year - Answer -Fuji; 1981
_______ radiography: has photostimulable storage phosphor imaging - Answer -
Computed(CR)
Digital radiography uses what 2 acquisitions? - Answer -Indirect and direct
What uses a 2-part process involving a scintillator and a photodetector? - Answer -
Indirect acquisition
______: directly convert incoming x-ray photons to an electronic signal - Answer -
Direct acquisition
What does direct acquisition use? - Answer -Selenium
All medical imaging is achieved with ________ - Answer -Digital computers
What does ADC stand for? - Answer -Analog to digital converters
DAC stands for_____ - Answer -Digital to analog converters
Computers mange data using ____ ____ language - Answer -Binary machine
Binary system operates with how many symbols? - Answer -2
Each binary number is called a ____ - Answer -Bit
An eight word bit is called a ____ - Answer -Bute
Nominal numbers function on a base of ____ system - Answer -10
, DIGITAL RADIOGRAPHY/ COMPUTED RADIOGRAPHY:
PRINCIPLES-TEST PRACTICE QUESTIONS WITH 100%
COMPLETE AND CORRECT ANSWERS/A+ GRADE/2024
VERSION
What are 4 digital image characteristics? - Answer –
1. Matrix
2. Pixel
3. Voxel
4. Bit depth
A digital computerized radiography image matrix is at least ___×___; which equals
____ pixels - Answer -512×512; 262,144
If you increase matrix size, what will you do to your resolution? - Answer -
Increase resolution
______: size of the examination area - Answer -Field of view (FOV)
Square in the image matrix is called a picture element or a ____ - Answer -Pixel
Pixel size determines the ______ - Answer -Resolution
Smaller pixels= ______ resolution - Answer -Better
FOV÷matrix size gives you_____ - Answer -Pixel size
What size pixels would a larger matrix for the same FOV produce? - Answer -
Smaller
Each pixel corresponds to a ____ - Answer -Voxel
Voxel is a ____ volume of ____ - Answer -3D; tissue
Numerical value in the Voxel is expressed in the ____; also assigned a ____ -
Answer -Pixel; brightness level
PRINCIPLES-TEST PRACTICE QUESTIONS WITH 100%
COMPLETE AND CORRECT ANSWERS/A+ GRADE/2024
VERSION
Radiography was first introduced by_______, in what year - Answer -Fuji; 1981
_______ radiography: has photostimulable storage phosphor imaging - Answer -
Computed(CR)
Digital radiography uses what 2 acquisitions? - Answer -Indirect and direct
What uses a 2-part process involving a scintillator and a photodetector? - Answer -
Indirect acquisition
______: directly convert incoming x-ray photons to an electronic signal - Answer -
Direct acquisition
What does direct acquisition use? - Answer -Selenium
All medical imaging is achieved with ________ - Answer -Digital computers
What does ADC stand for? - Answer -Analog to digital converters
DAC stands for_____ - Answer -Digital to analog converters
Computers mange data using ____ ____ language - Answer -Binary machine
Binary system operates with how many symbols? - Answer -2
Each binary number is called a ____ - Answer -Bit
An eight word bit is called a ____ - Answer -Bute
Nominal numbers function on a base of ____ system - Answer -10
, DIGITAL RADIOGRAPHY/ COMPUTED RADIOGRAPHY:
PRINCIPLES-TEST PRACTICE QUESTIONS WITH 100%
COMPLETE AND CORRECT ANSWERS/A+ GRADE/2024
VERSION
What are 4 digital image characteristics? - Answer –
1. Matrix
2. Pixel
3. Voxel
4. Bit depth
A digital computerized radiography image matrix is at least ___×___; which equals
____ pixels - Answer -512×512; 262,144
If you increase matrix size, what will you do to your resolution? - Answer -
Increase resolution
______: size of the examination area - Answer -Field of view (FOV)
Square in the image matrix is called a picture element or a ____ - Answer -Pixel
Pixel size determines the ______ - Answer -Resolution
Smaller pixels= ______ resolution - Answer -Better
FOV÷matrix size gives you_____ - Answer -Pixel size
What size pixels would a larger matrix for the same FOV produce? - Answer -
Smaller
Each pixel corresponds to a ____ - Answer -Voxel
Voxel is a ____ volume of ____ - Answer -3D; tissue
Numerical value in the Voxel is expressed in the ____; also assigned a ____ -
Answer -Pixel; brightness level
