Carter Veale Chapter 4 & 5 CR and DR
Study online at https://quizlet.com/_16zttf
1. digital radiogra- process that produces an electronic image that can be viewed and manipulated
phy on a computer
2. DR images can PACS
be sent to _______.
3. Digital radiog- DR and CR
raphy includes
both ____ and
____.
4. image acquisi- x-rays are converted into electrical signals, then the signals are available for
tion processing and manipulation for both CR and DR
5. Digital images pixels
are displayed in
a matrix of
_________.
6. _______ pixels = smaller
greater resolu-
tion
7. Matrix size can vary
_______.
8. Larger matrix = the pixels must �t into the matrix
smaller pixels be-
cause...
9. Matrix size -512x512
ranges -1024x1024
-2500x2500
, Carter Veale Chapter 4 & 5 CR and DR
Study online at https://quizlet.com/_16zttf
10. Larger matrix = small
_______ pixels.
11. Film-screen reso- 10 lp/mm
lution
12. CR resolution 2.55 lp/mm
-does have increased number of recorded densities and contrast
-Carlton states that CR resolution is comparable to and sometimes better than
�lm-screen
13. Light plays an im- image formation
portant role be-
cause of ______
________.
14. luminescence emission of visible light
15. photostimulable CR phosphor that emits light after excitation from laser
phosphor (PSP)
16. phosphores- emission of visible light during and after stimulation; delayed beyond 8-10 secs
cence
17. �uorescence emission of visible light only during stimulation; within 8-10 secs of the stimulation
18. The sequence of CR (has 1 less step)
events are al-
most the same
for lm-screen
and ________.
19. Conventional -radiographic intensifying screen (scintillator) emits light in the response to an
lm-screen x-ray interaction
, Carter Veale Chapter 4 & 5 CR and DR
Study online at https://quizlet.com/_16zttf
-�lm is placed between 2 screens
-hard copy produced
20. CR (digital imag- -x-ray interaction result in electrons being trapped in a higher energy metastable
ing) state
-image plate takes place of �lm
-soft copy produced
-can print hard copy
21. Similarities be- -use a cassette/image plate in a protective case
tween F/S and CR -image plate is backed by a thin sheet of alluminum that absorbs x-rays and
prevents backscatter
-carry latent image
-latent image is made visible by processing
22. DICOM (digital imaging and communications in medicine); software standard employed
by manufacturers that permits a wide range of digital systems to communicate
with each other
-not a full proof system
23. How is CR di er- -CR uses a cassette/image plate
ent from DR? -closer to F/S in process
-designed to acquire or record images made with x-rays on a reusable detector
containing special storage phosphor material
-uses photostimulable luminescence (PSL), storage technology, and laser stimu-
lated luminescence
24. How is DR di er- -DR does not use cassettes
ent form CR? -more e cient
-less steps
-machine does a lot for the radiographer
-designed to produce images with a fan x-ray beam intercepted by a linear array
of radiation detectors
Study online at https://quizlet.com/_16zttf
1. digital radiogra- process that produces an electronic image that can be viewed and manipulated
phy on a computer
2. DR images can PACS
be sent to _______.
3. Digital radiog- DR and CR
raphy includes
both ____ and
____.
4. image acquisi- x-rays are converted into electrical signals, then the signals are available for
tion processing and manipulation for both CR and DR
5. Digital images pixels
are displayed in
a matrix of
_________.
6. _______ pixels = smaller
greater resolu-
tion
7. Matrix size can vary
_______.
8. Larger matrix = the pixels must �t into the matrix
smaller pixels be-
cause...
9. Matrix size -512x512
ranges -1024x1024
-2500x2500
, Carter Veale Chapter 4 & 5 CR and DR
Study online at https://quizlet.com/_16zttf
10. Larger matrix = small
_______ pixels.
11. Film-screen reso- 10 lp/mm
lution
12. CR resolution 2.55 lp/mm
-does have increased number of recorded densities and contrast
-Carlton states that CR resolution is comparable to and sometimes better than
�lm-screen
13. Light plays an im- image formation
portant role be-
cause of ______
________.
14. luminescence emission of visible light
15. photostimulable CR phosphor that emits light after excitation from laser
phosphor (PSP)
16. phosphores- emission of visible light during and after stimulation; delayed beyond 8-10 secs
cence
17. �uorescence emission of visible light only during stimulation; within 8-10 secs of the stimulation
18. The sequence of CR (has 1 less step)
events are al-
most the same
for lm-screen
and ________.
19. Conventional -radiographic intensifying screen (scintillator) emits light in the response to an
lm-screen x-ray interaction
, Carter Veale Chapter 4 & 5 CR and DR
Study online at https://quizlet.com/_16zttf
-�lm is placed between 2 screens
-hard copy produced
20. CR (digital imag- -x-ray interaction result in electrons being trapped in a higher energy metastable
ing) state
-image plate takes place of �lm
-soft copy produced
-can print hard copy
21. Similarities be- -use a cassette/image plate in a protective case
tween F/S and CR -image plate is backed by a thin sheet of alluminum that absorbs x-rays and
prevents backscatter
-carry latent image
-latent image is made visible by processing
22. DICOM (digital imaging and communications in medicine); software standard employed
by manufacturers that permits a wide range of digital systems to communicate
with each other
-not a full proof system
23. How is CR di er- -CR uses a cassette/image plate
ent from DR? -closer to F/S in process
-designed to acquire or record images made with x-rays on a reusable detector
containing special storage phosphor material
-uses photostimulable luminescence (PSL), storage technology, and laser stimu-
lated luminescence
24. How is DR di er- -DR does not use cassettes
ent form CR? -more e cient
-less steps
-machine does a lot for the radiographer
-designed to produce images with a fan x-ray beam intercepted by a linear array
of radiation detectors
