Dunedin- Radiology

Question 1

What is Fleischner’s sign? Westermark’s sign? Hamptoms hump?

Answer 1

Pulmonary artery enlarged by clot

decreased regional perfusion in PE

Lung infarct

Question 2

Describe inhalation patterns on CXR

Answer 2

Allergen –> diffuse
Gas –> upper
Silicosis –> diffuse
asbestosis –> lower

Question 3

How does silicosis with progressive massive fibrosis appear on imaging?

Answer 3

Perihilar and contracted fibrosis

Question 4

How does bird fancier appear on CXR

Answer 4

diffuse non-specific changes, can get bronchiolitis

Question 5

Which malignancy looks like non-resolving pneumonia on CXR?

Answer 5

bronchoalveolar cell carcinoma/adenocarcinoma in situ

Question 6

Which malignancy shows Kerry B lines (interlobular septal thickening) on CXR?

Answer 6

Lymphangitis carcinomatosa

Question 7

Describe TB location on CXR

Answer 7

Upper lobe or apical segment of lower lobe

Question 8

What does ‘finger in glove’ bronchial thickening suggest?

Answer 8

Aspergillosis

Mid and upper lobe

Question 9

What does peribronchial granulomatosis refer to?

Answer 9

Sarcoidosis
usually has large hilarious lymphadenopathy initially

Question 10

How to determine pulmonary fibrosis based on location?

Answer 10

Upper: Sarcoid, Tb, radiation

Lower: Aspiration

Subpleural - peripheral: Fibrosing alveolitis

Diffuse: Connective tissue

Question 11

What is cryptogenic organising pneumonitis (COP)

Answer 11

AKA bronchiolitis obliterates organising pneumonia

often end result of other resp conditions

Question 12

What are the main features of RA?

Answer 12

corner erosion
loss of join space width

Question 13

What are the main features of osteoarthritis?

Answer 13

Joint space loss, sclerosis, osteophytes

Question 14

What is a typical knee x-ray of CPPD?

Answer 14

patellofemoral joint affected however femoral joint not affected

Question 15

Where in gout can urate deposit?

Answer 15

Inside capsule
outside capsule
In bone

Question 16

What causes an isolated DIP joint?

Answer 16

Regular OA (seagull deformity)

erosive OA

Psoriasis (pencil in cup)

Question 17

What are some radiological findings in Psoriasis

Answer 17

• Syndesmophyte
• pencil in cup joint
• manubrio-sternal and SIJ update

Question 18

What is some radiological features of ank spondylitis?

Answer 18

Question 19

What are radiological characteristics of Pagets disease?

Answer 19

dense, coarse trabecular, wide cortex

in long bone- goes to one end

Question 20

What causes epidural/extradural haemorrhage?

Answer 20

torn middle meningeal artery, often with a scalp fracture
causes lentiform/crescenteric shaped

Question 21

Subarachnoid haemorrhage on CT

Answer 21

Question 22

Imaging of dense middle cerebral artery sign –> L parietal infarct

Answer 22

Question 23

In CT, which IV contrast is used?

Answer 23

iodine compounds

Question 24

In MRI, which sequence best identified MS demyelinating plaques?

Answer 24

Flair

Question 25

What does imaging of lateral medullary syndrome show?

Answer 25

Infarction of L side of brainstem and cerebella
obstruction of L.PICA

Question 25

In abdo CT, Para-aortic lymphadenopathy is most suggestive of?

Answer 25

Lymphoma

Question 26

what is the signet ring sign?

Answer 26

bronchiectasis

Question 27

On HRCT, tree in bud suggests?

Answer 27

Infection

Question 28

What does Pagets disease look like on PET?

Answer 28

HOT
goes to the ends of the long bone
affects all vertebral appendages
Kilroy sign