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Master the Boards > Radiology > Flashcards

Radiology Flashcards

1
Q

CXR dx

A

all forms of PULMONARY complaints

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2
Q

PA= posteroanterior

A

best choice when CXR is chosen, STANDING patient

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3
Q

AP films

A

UNSTABLE patient– too sick to stand for PA

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4
Q

AP films often done with…

A

portable CXR equipment

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5
Q

CXR in ICU setting

A

AP film

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6
Q

Pleural effusion imaging

A
  1. lateral CXR

2. decubitus film– freely mobile and forms a layer on side of XR

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7
Q

widening of mediastinum

A

dissection THORACIC aorta

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8
Q

cannot tell between pneumonia infiltrate and effusion

A

DECUBITUS XR

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9
Q

best initial imaging for TB

A

apical lordotic films

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10
Q

apical lordotic films

A

ALMOST NEVER the right answer

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11
Q

whenever a apical lordotic film MIGHT be done, instead do…

A

CT chest

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12
Q

determining precise location of an infiltrate on PA

A

Lateral CXR

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13
Q

best initial test for effusion

A

lateral CXR

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14
Q

abdo X ray

A

ileus or SBO– multiple air fluid levels

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15
Q

abdo X ray for kidney stones

A

NOOOOOOOOOOO not accurate

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16
Q

abdo X ray for free air under the diaphragm

A

NOOOOOOOOOOO because cannot visualize the top of the diaphragm

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17
Q

what imaging if perforated the bowel

A

upright CXR, NOT abdo Xray

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18
Q

best initial test for osteomyelitis

A

BONE XRAY–elevation of periosteum

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19
Q

skull XRAY

A

NOT the best initial test

NOT the most accurate test for anything!!!

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20
Q

non-contrast CT indications

A
  • head trauma
  • stroke
  • BLEEDING– any form- including SAH
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21
Q

CT scan with contrast

A
  • cancer

- infection

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22
Q

best initial test for any form intracranial mass lesion

A

CT with contrast

23
Q

NB considerations for head CT with contrast

A
  • don’t order if severe renal failure
  • hydrate with saline, possibly use bicarb or NAC with mild renal insufficiency
  • stop metformin prior to using contrast
24
Q

2 methods of contrast for ado CT

A

IV or ORAL

25
Q

indications for abdo CT

A
  • retroperitoneal structures– pancreas
  • appendicitis and other intra-abda infections
  • masses within ado organs: liver and spleen
  • MOST accurate test for: nephrolithiasis (no contrast), and diverticulitis
26
Q

most accurate test for kidneys stones

A

CT WITHOUT WITHOUT WITHOUT contrast

27
Q

CT chest

A
  • hilar nodes: sarcoidosis
  • mass lesions: cancer
  • cavities
  • interstitial lung disease– parenchymal lung disease
  • pulmonary emboli- spiral CT or CT angiogram
28
Q

CT and bone

A

NOT the best initial

NOT the most accurate

29
Q

MRI most accurate test of….

A

ALL CNS diseases

30
Q

exception of MRI for CNS diseases, being most accurate test…

A

EXCEPT FOR HAEMORRHAGE

31
Q

MRI with contrast

A
  • infections

- cancer

32
Q

Best test for MS

A

MRI

33
Q

best test for posterior fossa lesion

A

MRI

34
Q

best test for brainstem

A

MRI

35
Q

best test for pituitary lesions

A

MRI

36
Q

best imaging orbits and sinuses

A

MRI

37
Q

best test osteomyelitis

A

MRI

38
Q

osteomyelitis imaging

A
  1. best initial= bone Xray

2. most accurate= MRI

39
Q

best imaging for spinal cord and vertebral lesions

A

MRI

40
Q

most accurate test for cancer and infection

A

ALWAYS ALWAYS ALWAYS BIOPSY

41
Q

US indications

A
  • gallbladder - stones
  • renal disease
  • gynae organs
  • prostate evaluation (Transrectal)
42
Q

most accurate imaging of pancreatic lesions– esp in head of pancreas

A

endoscopic US

43
Q

most accurate imaging of pancreatic and biliary ductal disease

A

endoscopic US

44
Q

most accurate test for gastrinoma LOCALIZATION

A

endoscopic US

45
Q

HIDA scan

A

cholecystitis

46
Q

bone scan

A

= SENSITIVITY-MRI
- NOT as specific as MRI
METASTASES FROM CANCER

47
Q

gallium scan

A

fever of unknown origin

48
Q

gallium=

A

iron metabolite, transported on transferrin– thus taken up by infection and cancer (since both have more iron)

49
Q

indium scan

A

fever of unknown origin

50
Q

indium scan better than gallium scan with…

A

assessing the abdomen, since that can be obscured in gallium scanning

51
Q

indium scan=

A

tagged WBC’s, reinfected to see where the localize to detect infection

52
Q

V/Q scan

A

low probability scans– 15% STILL HAVE A CLOT

high probability scans– 15% do NOT have clot

53
Q

V/Q or spiral CT for imaging of PE

A

spiral CT

54
Q

mUGA or nuclear ventriculography

A

ejection fraction

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