Radiology

Question 1

CXR dx

Answer 1

all forms of PULMONARY complaints

Question 2

PA= posteroanterior

Answer 2

best choice when CXR is chosen, STANDING patient

Question 3

AP films

Answer 3

UNSTABLE patient– too sick to stand for PA

Question 4

AP films often done with…

Answer 4

portable CXR equipment

Question 5

CXR in ICU setting

Answer 5

AP film

Question 6

Pleural effusion imaging

Answer 6

1. lateral CXR

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

Question 7

widening of mediastinum

Answer 7

dissection THORACIC aorta

Question 8

cannot tell between pneumonia infiltrate and effusion

Answer 8

DECUBITUS XR

Question 9

best initial imaging for TB

Answer 9

apical lordotic films

Question 10

apical lordotic films

Answer 10

ALMOST NEVER the right answer

Question 11

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

Answer 11

CT chest

Question 12

determining precise location of an infiltrate on PA

Answer 12

Lateral CXR

Question 13

best initial test for effusion

Answer 13

lateral CXR

Question 14

abdo X ray

Answer 14

ileus or SBO– multiple air fluid levels

Question 15

abdo X ray for kidney stones

Answer 15

NOOOOOOOOOOO not accurate

Question 16

abdo X ray for free air under the diaphragm

Answer 16

NOOOOOOOOOOO because cannot visualize the top of the diaphragm

Question 17

what imaging if perforated the bowel

Answer 17

upright CXR, NOT abdo Xray

Question 18

best initial test for osteomyelitis

Answer 18

BONE XRAY–elevation of periosteum

Question 19

skull XRAY

Answer 19

NOT the best initial test

NOT the most accurate test for anything!!!

Question 20

non-contrast CT indications

Answer 20

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

Question 21

CT scan with contrast

Answer 21

• cancer

- infection

Question 22

best initial test for any form intracranial mass lesion

Answer 22

CT with contrast

Question 23

NB considerations for head CT with contrast

Answer 23

• 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

Question 24

2 methods of contrast for ado CT

Answer 24

IV or ORAL

Question 25

indications for abdo CT

Answer 25

- 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

Question 26

most accurate test for kidneys stones

Answer 26

CT WITHOUT WITHOUT WITHOUT contrast

Question 27

CT chest

Answer 27

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

Question 28

CT and bone

Answer 28

NOT the best initial | NOT the most accurate

Question 29

MRI most accurate test of....

Answer 29

ALL CNS diseases

Question 30

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

Answer 30

EXCEPT FOR HAEMORRHAGE

Question 31

MRI with contrast

Answer 31

- infections | - cancer

Question 32

Best test for MS

Answer 32

MRI

Question 33

best test for posterior fossa lesion

Answer 33

MRI

Question 34

best test for brainstem

Answer 34

MRI

Question 35

best test for pituitary lesions

Answer 35

MRI

Question 36

best imaging orbits and sinuses

Answer 36

MRI

Question 37

best test osteomyelitis

Answer 37

MRI

Question 38

osteomyelitis imaging

Answer 38

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

Question 39

best imaging for spinal cord and vertebral lesions

Answer 39

MRI

Question 40

most accurate test for cancer and infection

Answer 40

ALWAYS ALWAYS ALWAYS BIOPSY

Question 41

US indications

Answer 41

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

Question 42

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

Answer 42

endoscopic US

Question 43

most accurate imaging of pancreatic and biliary ductal disease

Answer 43

endoscopic US

Question 44

most accurate test for gastrinoma LOCALIZATION

Answer 44

endoscopic US

Question 45

HIDA scan

Answer 45

cholecystitis

Question 46

bone scan

Answer 46

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

Question 47

gallium scan

Answer 47

fever of unknown origin

Question 48

gallium=

Answer 48

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

Question 49

indium scan

Answer 49

fever of unknown origin

Question 50

indium scan better than gallium scan with...

Answer 50

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

Question 51

indium scan=

Answer 51

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

Question 52

V/Q scan

Answer 52

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

Question 53

V/Q or spiral CT for imaging of PE

Answer 53

spiral CT

Question 54

mUGA or nuclear ventriculography

Answer 54

ejection fraction