Radiology ARRT Exam Latest Update
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A person with thyroditis generally has a radioidoine uptake that is? - Correct Answers-Below
normal
A toddler has a choking episode and the older brother is hiding in his room. Which is the
appropriate imaging study? - Correct Answers-CT of the chest (use less radiation). Air
trapping - ball and valve
Abdominal Aortic Aneurysm? - Correct Answers-Occasionally, aneurysm may calcify and be
identified on plain films of the abdomen. The aorta should not measure greater than 3 cm in
maximum width. A cross-table lateral may be helpful to identify the width of the aorta;
however, the primary imaging procedure to evaluate for abdominal aortic aneurysms is the
ultrasound scan.
Abdominal plain films - helpful for what? - Correct Answers-Helpful in the evaluation of
extraluminal air and intestinal obstruction
Abdominal radiology - gas patterns? - Correct Answers-In the adult, gas is identified in the
stomach or colon. Very little small bowel gas is seen in the adult and, if small bowel loops are
identified, they should not measure greater than 3 cm in length or width.
Children commonly have small bowel gas; however, the loops are not dilated and are rounded
in configuration.
Abnormalities that cause decreased lung densities? - Correct Answers-(1) Hyperinflation of
the lungs = hyperlucency
(2) Decreased pulmonary vascularity (ie from congenital heart disease)
ACL tear - Correct Answers-
Acute pancreatitis? - Correct Answers-Acute Pancreatitis - In the United States, 60-80% of
pancreatitis has been associated with either ethanol abuse or biliary tract stones. In
,approximately 20% of cases, no apparent etiology is identified. CT of acute pancreatitis will
typically show enlargement and poor definition of the contour of the pancreas. Transient fluid
collections may develop in and around the pancreas, which may resolve spontaneously.
**Pseudocyst** formation is usually easily detected within the pancreas or wherever the
inflammatory process extends. Pancreatic necrosis appears as areas of non-enhancement on
intravenous contrast scans. **Pseudoaneurysm formation in the setting of acute pancreatitis is
associated with a high mortality rate.**
Adenomyosis - what is it? clinical presentation? imaging of choice? - Correct Answers-
Adenomyosis - Heterotopic endometrial glands and stroma are located within the myometrium
(internal endometriosis). Clinically the patient may present with dysmenorrhea, bleeding and
enlarged uterus. T2-weighted MRI imaging is the study of choice. The junctional zone will
appear thickened (>8 mm) and contain high signal intensity endometrial foci within
myometrium.
Adrenal adenoma? - Correct Answers-a. Benign
b. Usually an incidental finding on CT
c. Demonstrate slight enhancement w/ IV contrast
d. HU < 20 vs adrenal hemorrhage that has HU > 40
Adrenal metastases? - Correct Answers-Adrenal Metastases - Most common primary sites
include lung with small cell carcinoma accounting for 90% of adrenal masses, breast, kidney,
bowel, ovary and melanoma. Lesions typically have high Hounsfield numbers of greater than 20
on noncontrast enhanced CT.
Air in biliary tree? When is it seen? - Correct Answers-i. Located more medially than air in
the portal venous system
ii. Appears as a single lucent shadow w/ perhaps visualization of a right and left hepatic duct
iii. May be seen w/ passage of a gallstone and is commonly seen after biliary surgery
iv. May also be seen in gallstone ileus
Air in the portal venous system? Suggestive of what in adults? Suggestive of what in children? -
Correct Answers-Air in the Portal Venous System: Air in the portal venous system appears as
numerous branching linear shadows throughout the liver and usually occurs with bowel
infarction. Gas obtains access into the mesenteric veins and finds its way into the portal venous
system. This is an ominous finding in an adult and usually means bowel infarction. Portal vein
gas may also be seen in children with necrotizing enterocolitis.
,Air space disease - what is an acinus? what is the hallmark of air space disease? - Correct
Answers-The acinus is the unit of lung that can be seen on the x-ray with air space disease as
flurry irregular shadows approximately 5mm. in diameter. Air space disease may spread through
the pores of Kohn and coalesce to produce consolidation.
Air spaces and distal bronchial structures within an area of consolidation, which still contain air
rather than fluid are identified as air bronchograms and are the hallmark of air space disease.
Angiomyolipoma? - Correct Answers-Angiomyolipoma (AML) - These lesions are solid on
sonography. CT demonstrates fat within the tumor which may be diagnostic. Angiomyolipomas
may also be associated with tuberous sclerosis. AMLs may be embolized at arteriography.
Ankylosing spondylitis? - Correct Answers-a. **Sendesmophytes (ossification of the
outermost layer of the annulus fibrosa) --> bamboo spine**
Radiographically the first changes occur in the **Sacroiliac joints** with irregularity and
erosions of both sides. This is followed by sclerosis about the SI joints and ultimately bony
ankylosis with total fusion of the SI joints occurs.
Anterior Mediastinal masses? - Correct Answers-Anterior Mediastinum - 3Ts and an L
a. substernal thyroid
b. thymic lesions
c. teratomas
d. Lymphoma
Aortic dissection - Debakey 1 (Standford A) vs DeBakey 2 (Standford B)? - Correct Answers-
Aortic Dissection
Common causes include hypertension (80%), Marfan's and coarctation. DeBakey 1 (Stanford A)
dissections involve the ascending and descending aorta. DeBakey 2 (Stanford A) dissections
involve the ascending aorta and arch only. DeBakey 3 (Stanford B) dissections involve the
descending aorta only. Stanford A dissections are treated with surgery. Stanford B dissections
are treated with medical management with intervention reserved for cases involving renal or
mesenteric arterial occlusion. Radiologic evaluation involves locating the intimal flap as well as
the location of the true and false lumens. Image-guided fenestration can be performed by the
interventional radiologist in the treatment of descending aortic dissections.
, Aortic Dissection on MRI - Correct Answers-
Appendicitis-Thickened appendix >6cm, thickening of the cecal apex, right lower quadrant
inflammatory changes - Correct Answers-
Atelectasis - Correct Answers-Atelectasis = volume loss
A. Local increased density
B. Displacement of interlobar fissures
C. Elevation of hemidiaphragm
D. Displacement of mediastinum
E. Compensatory overinflation
F. Displacement of hila
G. Approximation of ribs
H. Absence of air bronchograms in obstructive atelectasis
Displacement of fissures is one of the most important of the signs of atelectasis. The fissures
always appear as sharp straight lines bordering on an area of increased density.
Barrett's Esophagitis-High stricture on esophagram - Correct Answers-
Battered child-metaphyseal corner fracture - Correct Answers-
Benign vascular calcification on mammogram - Correct Answers-
Bennett's fracture? - Correct Answers-This is a fracture involving the base of the first
metacarpal including the proximal articular surface. This fracture presents as an oblique fracture
involving the carpometacarpal joint in such a way that a triangular fragment of the bone from
the first metacarpal is separated from the remaining portion of the metacarpal and remains in
its normal position articulating with the trapezium. The major fragment of shaft of the
metacarpal is displaced proximally.
BI-RADS 0? - Correct Answers-Assessment incomplete - needs additional imaging evaluation
BI-RADS 1? - Correct Answers-Negative - routine mammography in 1 year recommended.
BI-RADS 2? - Correct Answers-Benign - routine mammography in 1 year recommended.
2025/2026|Real-Based Questions with
Verified Answers| Guaranteed Perfect Score
Pass 100%
A person with thyroditis generally has a radioidoine uptake that is? - Correct Answers-Below
normal
A toddler has a choking episode and the older brother is hiding in his room. Which is the
appropriate imaging study? - Correct Answers-CT of the chest (use less radiation). Air
trapping - ball and valve
Abdominal Aortic Aneurysm? - Correct Answers-Occasionally, aneurysm may calcify and be
identified on plain films of the abdomen. The aorta should not measure greater than 3 cm in
maximum width. A cross-table lateral may be helpful to identify the width of the aorta;
however, the primary imaging procedure to evaluate for abdominal aortic aneurysms is the
ultrasound scan.
Abdominal plain films - helpful for what? - Correct Answers-Helpful in the evaluation of
extraluminal air and intestinal obstruction
Abdominal radiology - gas patterns? - Correct Answers-In the adult, gas is identified in the
stomach or colon. Very little small bowel gas is seen in the adult and, if small bowel loops are
identified, they should not measure greater than 3 cm in length or width.
Children commonly have small bowel gas; however, the loops are not dilated and are rounded
in configuration.
Abnormalities that cause decreased lung densities? - Correct Answers-(1) Hyperinflation of
the lungs = hyperlucency
(2) Decreased pulmonary vascularity (ie from congenital heart disease)
ACL tear - Correct Answers-
Acute pancreatitis? - Correct Answers-Acute Pancreatitis - In the United States, 60-80% of
pancreatitis has been associated with either ethanol abuse or biliary tract stones. In
,approximately 20% of cases, no apparent etiology is identified. CT of acute pancreatitis will
typically show enlargement and poor definition of the contour of the pancreas. Transient fluid
collections may develop in and around the pancreas, which may resolve spontaneously.
**Pseudocyst** formation is usually easily detected within the pancreas or wherever the
inflammatory process extends. Pancreatic necrosis appears as areas of non-enhancement on
intravenous contrast scans. **Pseudoaneurysm formation in the setting of acute pancreatitis is
associated with a high mortality rate.**
Adenomyosis - what is it? clinical presentation? imaging of choice? - Correct Answers-
Adenomyosis - Heterotopic endometrial glands and stroma are located within the myometrium
(internal endometriosis). Clinically the patient may present with dysmenorrhea, bleeding and
enlarged uterus. T2-weighted MRI imaging is the study of choice. The junctional zone will
appear thickened (>8 mm) and contain high signal intensity endometrial foci within
myometrium.
Adrenal adenoma? - Correct Answers-a. Benign
b. Usually an incidental finding on CT
c. Demonstrate slight enhancement w/ IV contrast
d. HU < 20 vs adrenal hemorrhage that has HU > 40
Adrenal metastases? - Correct Answers-Adrenal Metastases - Most common primary sites
include lung with small cell carcinoma accounting for 90% of adrenal masses, breast, kidney,
bowel, ovary and melanoma. Lesions typically have high Hounsfield numbers of greater than 20
on noncontrast enhanced CT.
Air in biliary tree? When is it seen? - Correct Answers-i. Located more medially than air in
the portal venous system
ii. Appears as a single lucent shadow w/ perhaps visualization of a right and left hepatic duct
iii. May be seen w/ passage of a gallstone and is commonly seen after biliary surgery
iv. May also be seen in gallstone ileus
Air in the portal venous system? Suggestive of what in adults? Suggestive of what in children? -
Correct Answers-Air in the Portal Venous System: Air in the portal venous system appears as
numerous branching linear shadows throughout the liver and usually occurs with bowel
infarction. Gas obtains access into the mesenteric veins and finds its way into the portal venous
system. This is an ominous finding in an adult and usually means bowel infarction. Portal vein
gas may also be seen in children with necrotizing enterocolitis.
,Air space disease - what is an acinus? what is the hallmark of air space disease? - Correct
Answers-The acinus is the unit of lung that can be seen on the x-ray with air space disease as
flurry irregular shadows approximately 5mm. in diameter. Air space disease may spread through
the pores of Kohn and coalesce to produce consolidation.
Air spaces and distal bronchial structures within an area of consolidation, which still contain air
rather than fluid are identified as air bronchograms and are the hallmark of air space disease.
Angiomyolipoma? - Correct Answers-Angiomyolipoma (AML) - These lesions are solid on
sonography. CT demonstrates fat within the tumor which may be diagnostic. Angiomyolipomas
may also be associated with tuberous sclerosis. AMLs may be embolized at arteriography.
Ankylosing spondylitis? - Correct Answers-a. **Sendesmophytes (ossification of the
outermost layer of the annulus fibrosa) --> bamboo spine**
Radiographically the first changes occur in the **Sacroiliac joints** with irregularity and
erosions of both sides. This is followed by sclerosis about the SI joints and ultimately bony
ankylosis with total fusion of the SI joints occurs.
Anterior Mediastinal masses? - Correct Answers-Anterior Mediastinum - 3Ts and an L
a. substernal thyroid
b. thymic lesions
c. teratomas
d. Lymphoma
Aortic dissection - Debakey 1 (Standford A) vs DeBakey 2 (Standford B)? - Correct Answers-
Aortic Dissection
Common causes include hypertension (80%), Marfan's and coarctation. DeBakey 1 (Stanford A)
dissections involve the ascending and descending aorta. DeBakey 2 (Stanford A) dissections
involve the ascending aorta and arch only. DeBakey 3 (Stanford B) dissections involve the
descending aorta only. Stanford A dissections are treated with surgery. Stanford B dissections
are treated with medical management with intervention reserved for cases involving renal or
mesenteric arterial occlusion. Radiologic evaluation involves locating the intimal flap as well as
the location of the true and false lumens. Image-guided fenestration can be performed by the
interventional radiologist in the treatment of descending aortic dissections.
, Aortic Dissection on MRI - Correct Answers-
Appendicitis-Thickened appendix >6cm, thickening of the cecal apex, right lower quadrant
inflammatory changes - Correct Answers-
Atelectasis - Correct Answers-Atelectasis = volume loss
A. Local increased density
B. Displacement of interlobar fissures
C. Elevation of hemidiaphragm
D. Displacement of mediastinum
E. Compensatory overinflation
F. Displacement of hila
G. Approximation of ribs
H. Absence of air bronchograms in obstructive atelectasis
Displacement of fissures is one of the most important of the signs of atelectasis. The fissures
always appear as sharp straight lines bordering on an area of increased density.
Barrett's Esophagitis-High stricture on esophagram - Correct Answers-
Battered child-metaphyseal corner fracture - Correct Answers-
Benign vascular calcification on mammogram - Correct Answers-
Bennett's fracture? - Correct Answers-This is a fracture involving the base of the first
metacarpal including the proximal articular surface. This fracture presents as an oblique fracture
involving the carpometacarpal joint in such a way that a triangular fragment of the bone from
the first metacarpal is separated from the remaining portion of the metacarpal and remains in
its normal position articulating with the trapezium. The major fragment of shaft of the
metacarpal is displaced proximally.
BI-RADS 0? - Correct Answers-Assessment incomplete - needs additional imaging evaluation
BI-RADS 1? - Correct Answers-Negative - routine mammography in 1 year recommended.
BI-RADS 2? - Correct Answers-Benign - routine mammography in 1 year recommended.
