8/20/26, 7:49 AM Aquifer - Radiology Latest Updates, EXAM – 2026/2027 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answe…
Aquifer - Radiology Latest Updates, EXAM –
2026/2027 (Questions + Answers) Study Guide,
Practice Questions, Solutions, Answers,
Add to calendar
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (207)
Window vs. Reconstruction on CT? Reconstructions - processing of the raw CT data
allows for better resolution of the structures [higher
resolution and higher contrast]
Reconstruction can be done in 3D (ortho) or in a
linear way too (vascular)
What is the total range of hounsfield -1000 (air) to +1000 (metal) [so range is 2000]
units availabe?
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 1/54
,8/20/26, 7:49 AM Aquifer - Radiology Latest Updates, EXAM – 2026/2027 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answe…
What does a typical computer display 256shades (that means each shade of grey covers
show for greyscale range? What can ~8HU)
the human eye actually distinguish? The can only distinguish 17 shades of grey
What is a good way to check Look at the lateral film
diaphragm flattening?
Diaphragm will be flat like you can set a ruler down
on the edge
What can a poor consolidation or PNA
inspiration/hypoinflation appear like?
How to look at the lung fields? Sweep or a zig zag down the lung field (both in PA
and lateral views)
look for focal, diffuse, BL asymmetrical, interstital/vasc
markings, lucencies (cavity/bullae/PTX),
compare upper and lower and L/R zones
Middle
lower zones
Which hilum should always appear The LEFT sided hilum should be higher - if its not its
higher on the radiograph? pathological
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 2/54
,8/20/26, 7:49 AM Aquifer - Radiology Latest Updates, EXAM – 2026/2027 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answe…
What to look for with the heart? Size of the heart - the cadiac:thoracic cavity ratio
LA
LV
What mediastinal lines should be R paratracheal line
observed on PA film? Azygous area
Azygoesophageal line
Paraaortic line (all the way down)
If you can see these you need to figure out the reason
why
How to look at the bones on Xray? Quadrant method [above and below the ribs] (the
middle lung section you just
also go down the spine looking for abnormalities,
mets, or collapse
When should you START looking at AFTER you have COMPLETELY evaluated the new
OLD films? scan
What are the ACR appropriateness The aim is to provide continuously updated evidence-
criteria? based algorithms that ensure the safest, most cost-
effective, and most efficient path to radiological
diagnosis or intervention matched to specific variants
of clinical presentations.
Federal LAW requires referring physicians to consult
Appropriate Use Criteria (AUC), such as ACR
Appropriateness Criteria, prior to ordering advanced
imaging services (ADIS), including CT, MR, nuclear
medicine, and PET, for Medicare patients.
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 3/54
, 8/20/26, 7:49 AM Aquifer - Radiology Latest Updates, EXAM – 2026/2027 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answe…
How are appropriateness criteria Older appropriateness rating tables used a numerical
divided/staged? rating scale: • Usually Appropriate = 9, 8, or 7 • May be
Appropriate = 6, 5, or 4 • Usually Not Appropriate = 3,
2, or 1
Newer appropriateness rating tables simply use the
three categories: • Usually Appropriate (Green cells in
the table) • May be Appropriate (Yellow cells in the
table) • Usually Not Appropriate (Red cells in the
table)
What lobe of lung is seen at the The R and L upper lobes
apicies?
What is the silhouette sign? The visual interface between structures of different
density.
Its actually when a silhouette is LOST that we say its a
"silhouette sign"
What is spine sign? When the combined density of the vertebrae and
some source of fluid/consolidation make the
vertebrae look MORE dense [just like ice over water
accentuates the ice appearing like they have
increased density even though they still the same ice]
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 4/54
Aquifer - Radiology Latest Updates, EXAM –
2026/2027 (Questions + Answers) Study Guide,
Practice Questions, Solutions, Answers,
Add to calendar
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (207)
Window vs. Reconstruction on CT? Reconstructions - processing of the raw CT data
allows for better resolution of the structures [higher
resolution and higher contrast]
Reconstruction can be done in 3D (ortho) or in a
linear way too (vascular)
What is the total range of hounsfield -1000 (air) to +1000 (metal) [so range is 2000]
units availabe?
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 1/54
,8/20/26, 7:49 AM Aquifer - Radiology Latest Updates, EXAM – 2026/2027 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answe…
What does a typical computer display 256shades (that means each shade of grey covers
show for greyscale range? What can ~8HU)
the human eye actually distinguish? The can only distinguish 17 shades of grey
What is a good way to check Look at the lateral film
diaphragm flattening?
Diaphragm will be flat like you can set a ruler down
on the edge
What can a poor consolidation or PNA
inspiration/hypoinflation appear like?
How to look at the lung fields? Sweep or a zig zag down the lung field (both in PA
and lateral views)
look for focal, diffuse, BL asymmetrical, interstital/vasc
markings, lucencies (cavity/bullae/PTX),
compare upper and lower and L/R zones
Middle
lower zones
Which hilum should always appear The LEFT sided hilum should be higher - if its not its
higher on the radiograph? pathological
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 2/54
,8/20/26, 7:49 AM Aquifer - Radiology Latest Updates, EXAM – 2026/2027 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answe…
What to look for with the heart? Size of the heart - the cadiac:thoracic cavity ratio
LA
LV
What mediastinal lines should be R paratracheal line
observed on PA film? Azygous area
Azygoesophageal line
Paraaortic line (all the way down)
If you can see these you need to figure out the reason
why
How to look at the bones on Xray? Quadrant method [above and below the ribs] (the
middle lung section you just
also go down the spine looking for abnormalities,
mets, or collapse
When should you START looking at AFTER you have COMPLETELY evaluated the new
OLD films? scan
What are the ACR appropriateness The aim is to provide continuously updated evidence-
criteria? based algorithms that ensure the safest, most cost-
effective, and most efficient path to radiological
diagnosis or intervention matched to specific variants
of clinical presentations.
Federal LAW requires referring physicians to consult
Appropriate Use Criteria (AUC), such as ACR
Appropriateness Criteria, prior to ordering advanced
imaging services (ADIS), including CT, MR, nuclear
medicine, and PET, for Medicare patients.
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 3/54
, 8/20/26, 7:49 AM Aquifer - Radiology Latest Updates, EXAM – 2026/2027 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answe…
How are appropriateness criteria Older appropriateness rating tables used a numerical
divided/staged? rating scale: • Usually Appropriate = 9, 8, or 7 • May be
Appropriate = 6, 5, or 4 • Usually Not Appropriate = 3,
2, or 1
Newer appropriateness rating tables simply use the
three categories: • Usually Appropriate (Green cells in
the table) • May be Appropriate (Yellow cells in the
table) • Usually Not Appropriate (Red cells in the
table)
What lobe of lung is seen at the The R and L upper lobes
apicies?
What is the silhouette sign? The visual interface between structures of different
density.
Its actually when a silhouette is LOST that we say its a
"silhouette sign"
What is spine sign? When the combined density of the vertebrae and
some source of fluid/consolidation make the
vertebrae look MORE dense [just like ice over water
accentuates the ice appearing like they have
increased density even though they still the same ice]
https://quizlet.com/1200590295/aquifer-radiology-latest-updates-exam-20262027-questions-answers-study-guide-practice-questions-solutions-answe… 4/54
