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Flashcards in CT lecture Deck (32):
1

how do you protect someone's kidneys to avoid CIN? contrast induced nephropathy

hydration

2

why can a VQ scan miss a saddle embolus?

you are looking for mismatch (areas that are ventilated, but not profused)-you'll be equal profusion to both lungs with this type of embolus...use a CTA

3

when would you use a VQ?

-pt has contrast allergy and you need the scan right away
-if CTA is not clear on whether there is a small one

4

how do you read a CXR?

1. mediastinum and the heart
2. lungs (back and forth with eyes over each lung field)
3. bony structures

5

what is a spiculated mass?

looks like a sunburst

6

why do you use contrast on a lung CT?

be able to view the mediastinum more affectively and evaluate if there is mediastinal hilar LAD

7

which lesion do you biopsy in lung cancer?

highest stage lesion

8

which imaging should you use to look for metastasis?

PET/CT (although not good at looking at the brain) add MRI of the brain

9

how does a PET scan work?

evaluates sugar uptake (FDG uptake)

10

what is risk of pneumothorax in aCT FNA of the lung?

10-15%

11

what is an EBUS with TBNA?

endobronchial ultrasound with transbronchial
allows you to biopsy a lymphnode along the trachia

12

what is TBBX?

transbronchial biopsy (with superdimension bronchoscopy) allows you to biopsy very distal lesions

13

what disease makes your lungs look big?

COPD

14

what are the characterstics of COPD chest XR?

flattened diaphram
big lung fields

15

how will lung squish in a pneumothorax?

will squish medially

16

what is a deep sulcus sign?

sign of a pneumothorax
what it will look like in a supine patient

17

always know what about your CXR

what position the patient is in

18

what do you look for in sick pts with a portable chest xray?

deep sulcus sign

19

what is good to measure pulmonary pressure?

echo

20

how do you measure pulmonary artery pressure?

tricuspid regurgitant jet

21

how is pulmonary edema located in heart failure

centrally located (bat wing)

22

what is borhoff syndrome?

tear in the esophagus
pneumomediastinum

23

what is classic presentation of pericarditis?

URI sxs with CP radiating to the right shoulder

24

what is EKG reading of pericarditis

ST elevation

25

what does CT do to size of effusion?

always overestimates

26

what is in break pads?

asbestos

27

what is bronchiectasis

irreversibly enlarged airways

28

what indicates mesothelioma?

thickening or pleural nodularity on the medial pleura

29

what procedure is needed for an obstruction?

bronchoscopy

30

what causes a complete white out from a pleural effusion?

lung cancer

31

subcutaneous emphysema

air in the soft tissue
-worry about pneumothorax

32

what can cause pneumoperitoneum?

perforated ulcer

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