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Flashcards in Radiology Deck (54):
1

CXR dx

all forms of PULMONARY complaints

2

PA= posteroanterior

best choice when CXR is chosen, STANDING patient

3

AP films

UNSTABLE patient-- too sick to stand for PA

4

AP films often done with...

portable CXR equipment

5

CXR in ICU setting

AP film

6

Pleural effusion imaging

1. lateral CXR
2. decubitus film-- freely mobile and forms a layer on side of XR

7

widening of mediastinum

dissection THORACIC aorta

8

cannot tell between pneumonia infiltrate and effusion

DECUBITUS XR

9

best initial imaging for TB

apical lordotic films

10

apical lordotic films

ALMOST NEVER the right answer

11

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

CT chest

12

determining precise location of an infiltrate on PA

Lateral CXR

13

best initial test for effusion

lateral CXR

14

abdo X ray

ileus or SBO-- multiple air fluid levels

15

abdo X ray for kidney stones

NOOOOOOOOOOO not accurate

16

abdo X ray for free air under the diaphragm

NOOOOOOOOOOO because cannot visualize the top of the diaphragm

17

what imaging if perforated the bowel

upright CXR, NOT abdo Xray

18

best initial test for osteomyelitis

BONE XRAY--elevation of periosteum

19

skull XRAY

NOT the best initial test
NOT the most accurate test for anything!!!

20

non-contrast CT indications

- head trauma
- stroke
- BLEEDING-- any form- including SAH

21

CT scan with contrast

- cancer
- infection

22

best initial test for any form intracranial mass lesion

CT with contrast

23

NB considerations for head CT with contrast

- 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

2 methods of contrast for ado CT

IV or ORAL

25

indications for abdo CT

- 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

most accurate test for kidneys stones

CT WITHOUT WITHOUT WITHOUT contrast

27

CT chest

- hilar nodes: sarcoidosis
- mass lesions: cancer
- cavities
- interstitial lung disease-- parenchymal lung disease
- pulmonary emboli- spiral CT or CT angiogram

28

CT and bone

NOT the best initial
NOT the most accurate

29

MRI most accurate test of....

ALL CNS diseases

30

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

EXCEPT FOR HAEMORRHAGE

31

MRI with contrast

- infections
- cancer

32

Best test for MS

MRI

33

best test for posterior fossa lesion

MRI

34

best test for brainstem

MRI

35

best test for pituitary lesions

MRI

36

best imaging orbits and sinuses

MRI

37

best test osteomyelitis

MRI

38

osteomyelitis imaging

1. best initial= bone Xray
2. most accurate= MRI

39

best imaging for spinal cord and vertebral lesions

MRI

40

most accurate test for cancer and infection

ALWAYS ALWAYS ALWAYS BIOPSY

41

US indications

- gallbladder - stones
- renal disease
- gynae organs
- prostate evaluation (Transrectal)

42

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

endoscopic US

43

most accurate imaging of pancreatic and biliary ductal disease

endoscopic US

44

most accurate test for gastrinoma LOCALIZATION

endoscopic US

45

HIDA scan

cholecystitis

46

bone scan

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

47

gallium scan

fever of unknown origin

48

gallium=

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

49

indium scan

fever of unknown origin

50

indium scan better than gallium scan with...

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

51

indium scan=

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

52

V/Q scan

low probability scans-- 15% STILL HAVE A CLOT
high probability scans-- 15% do NOT have clot

53

V/Q or spiral CT for imaging of PE

spiral CT

54

mUGA or nuclear ventriculography

ejection fraction