9/8- Chest Imaging in Lung Disease Flashcards Preview

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Flashcards in 9/8- Chest Imaging in Lung Disease Deck (35)
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31

What is seen here? 

Large homogeneous density of a mass/LN

32

Angiography of the chest shows what vessels?

Contrast studies help diagnose vascular diseases such as pulmonary embolism

- Pulmonary

- Bronchial

33

- A 41 yo presents with dyspnea for 3 weeks-

- On physical exam there are decreased breath sound, decreased tactile fremitus, and dullness to percussion on the right lower lung field

- Chest x-ray show increased radiographic density and obliterated costophrenic angle.

- You suspect pleural effusion.

- What radiographic test would you order next to confirm the diagnosis?

Pleural diseases, pneumothorax and pleural effusion are better assessed by decubitus films

- For a pneumothorax: air rises when lying on unaffected side, fluid layers when lying on the affected side

34

How does pneumothorax affect absorption of X-ray photons and what is the resulting effect on the X ray density on the affected side?

Air rises when lying on unaffected side, fluid layers when lying on the affected side

35

Name 3 respiratory conditions associated with increased and 3 associated with decreased radiographic density.

Increased radiographic density:

- Alveolar filling

- Atalectasis/volume loss

- Interstitial infiltrates

- Masses

Decreased radiographic density:

- Air trapping: asthma, emphysema, foreign body

- Pneumothorax

- Cysts/bullae

- Loss of soft tissue