Radio lo gy 2 DigitalRadiology
Radio graphy
2 Digital Radiography: 2026/ 2027
Study this set o nline at: https://www.cram.co m/flashcards/radio lo gy-2-digital-
radio graphy-1316506
1. Al l ows f aster i mage access, open i mage j ust by searchi ng pt's neame, can send
i mage to col l eague, etc 2. No chemi cal processi ng. Once you capture the i mage
you are done 3. D ose reducti on 4. D i gi tal i mage processi ng - zoom i n, enhance
What are the benef i ts of di gi tal x-rays?
contrast, bri ghtness 5. I mage database - archi ve al l your pati ents i mages 6.
Prof essi onal i mage - Pt senses that you are up to date, l atest technol ogy 7. D ental
marketi ng 8. Novel ty
What i s data stored as i n di gi tal i magi ng? Bi ts BI nary di gi T 1's & 0's
What i s the term f or when the conti nuous si gnal gets sampl ed then reconstructed
Anal ogue to D i gi tal Conversi on
usi ng di screte uni ts?
1. T he i magi ng system (i mage capture) - sensors, phosphor pl ates (PSP) 2. D i spl ay
system (the moni tor that you are usi ng to di spl ay i mage) 3. Vi ewi ng condi ti on -
What are 4 mai n components that af f ect di gi tal i mage qual i ty? want subdued l i ght. When l i ght i s on i t i s harder to see what's goi ng on. Look at
i mages wi th di m l i ght condi ti ons 4. Vi ewer - T he more experi ence you have
l ooki ng at radi ographs, the better you are at i nterpreti ng what you see.
What are the i mage qual i ty system components that contri bute to the i mage 1. Resol uti on (spati al resol uti on) 2. Contrast (contrast-resol uti on) 3. Bi t D epth 4.
capture? Si gnal to Noi se Rati o (SNR) 5. F i el d of Vi ew
Spati al resol uti on - Resol vi ng power of any i mage-f ormi ng devi ce Contrast
What i s the di f f erence between Spati al resol uti on & Contrast resol uti on? resol uti on - abi l i ty to di sti ngui sh between smal l est di f f erences i n the i ntensi ty of
an i mage. (usual l y useal f or medi cal i magi ng)
Li ne pai rs per mm T he hi gher l i ne pai rs,
the better your sensors are. We can see bi g
bl ack l i nes, (they are metal l i nes runni ng
What i s used to test resol uti on? f rom top to bottom) and they converge as
you go down. I n conventi onal f i l m we get
20 l i nes per mm, but when we convert to
di gi tal , not al l systems are abol e to get
that resol uti on. D i gi tal - zoom i n, can
sti l l di sti ngui sh l i ne pai rs at 20. At upper
porti on of graph, we can see l i nes much
easi er, but noti ce, the bl ackets you can
get i s at top, as you go down i t becomes
Whi ch i mage has better bi t depth? Lef t i mage
f uzzy. Once we get to 20 l i nes per mm,
contrast drops si gni f i cantl y, but can sti l l
get resol uti on (can sti l l see l i nes)
Questions and Verified Answers |
Radio graphy
2 Digital Radiography: 2026/ 2027
Study this set o nline at: https://www.cram.co m/flashcards/radio lo gy-2-digital-
radio graphy-1316506
1. Al l ows f aster i mage access, open i mage j ust by searchi ng pt's neame, can send
i mage to col l eague, etc 2. No chemi cal processi ng. Once you capture the i mage
you are done 3. D ose reducti on 4. D i gi tal i mage processi ng - zoom i n, enhance
What are the benef i ts of di gi tal x-rays?
contrast, bri ghtness 5. I mage database - archi ve al l your pati ents i mages 6.
Prof essi onal i mage - Pt senses that you are up to date, l atest technol ogy 7. D ental
marketi ng 8. Novel ty
What i s data stored as i n di gi tal i magi ng? Bi ts BI nary di gi T 1's & 0's
What i s the term f or when the conti nuous si gnal gets sampl ed then reconstructed
Anal ogue to D i gi tal Conversi on
usi ng di screte uni ts?
1. T he i magi ng system (i mage capture) - sensors, phosphor pl ates (PSP) 2. D i spl ay
system (the moni tor that you are usi ng to di spl ay i mage) 3. Vi ewi ng condi ti on -
What are 4 mai n components that af f ect di gi tal i mage qual i ty? want subdued l i ght. When l i ght i s on i t i s harder to see what's goi ng on. Look at
i mages wi th di m l i ght condi ti ons 4. Vi ewer - T he more experi ence you have
l ooki ng at radi ographs, the better you are at i nterpreti ng what you see.
What are the i mage qual i ty system components that contri bute to the i mage 1. Resol uti on (spati al resol uti on) 2. Contrast (contrast-resol uti on) 3. Bi t D epth 4.
capture? Si gnal to Noi se Rati o (SNR) 5. F i el d of Vi ew
Spati al resol uti on - Resol vi ng power of any i mage-f ormi ng devi ce Contrast
What i s the di f f erence between Spati al resol uti on & Contrast resol uti on? resol uti on - abi l i ty to di sti ngui sh between smal l est di f f erences i n the i ntensi ty of
an i mage. (usual l y useal f or medi cal i magi ng)
Li ne pai rs per mm T he hi gher l i ne pai rs,
the better your sensors are. We can see bi g
bl ack l i nes, (they are metal l i nes runni ng
What i s used to test resol uti on? f rom top to bottom) and they converge as
you go down. I n conventi onal f i l m we get
20 l i nes per mm, but when we convert to
di gi tal , not al l systems are abol e to get
that resol uti on. D i gi tal - zoom i n, can
sti l l di sti ngui sh l i ne pai rs at 20. At upper
porti on of graph, we can see l i nes much
easi er, but noti ce, the bl ackets you can
get i s at top, as you go down i t becomes
Whi ch i mage has better bi t depth? Lef t i mage
f uzzy. Once we get to 20 l i nes per mm,
contrast drops si gni f i cantl y, but can sti l l
get resol uti on (can sti l l see l i nes)
Questions and Verified Answers |
