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25 Cards in this Set
- Front
- Back
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define infiltrate
(as appears in the lungs on x-ray) |
abnormal material in the lungs
appears foamy on cxr |
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define atelectasis
(as appears in the lungs on x-ray) |
collapse of all or part of the lung
appears "whited out" on cxr |
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define pleural effusion
(as appears in the lungs on x-ray) |
fluid in the pleural space
appears as "white areas" at the periphery tend to see it around the edges on the bottom of the lungs |
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define mass
(as appears in the lungs on x-ray) |
solid space occupying lesion
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how are infiltrates found in pneumonia different from those in CHF
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PNEUMONIA:
- UNILATERAL infiltrate - PERSISTENT CHF: - BILATERAL infiltrate - RAPID CHANGE - improves/worsens - see pleural effusion and cardiomegaly |
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when do you need high SENSITIVITY of a scan
(ruling in or ruling out a disease?) |
ruling OUT a diagnosis
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when do you need high SPECIFICITY of a scan
(ruling in or ruling out a disease?) |
ruling IN a diagnosis
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Technique for interpreting the cxr
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1. start at the center - the important things are here
2. look for what you SHOULD see - is it obscured or different? 3. is there an INFILTRATE? - is it bilateral? - is it hazy? - is it fluffy? |
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If an area on cxr is HAZY or has a GROUND GLASS appearance, what do you suspect?
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PCP
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If an infiltrate looks "fluffy", what do you suspect?
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pneumonia
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what about a bilateral infiltrate? what is that likely to be (3 answers)
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- PCP
- viral pneumonia - heart failure |
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Silhouette sign
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visualizing a structure b/c of contrast between densities
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If you see a pleural effusion, what is one likely cause
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heart failure
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Water in the lungs indicates...
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edema
cardio or non cardio reasons |
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PUS in the lungs indicates...
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pneumonia
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BLOOD in the lungs indicates...
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systemic disease
trauma (hemothorax) |
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Presence of CELLS in the lungs indicates...
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lung cancer
leukemia |
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which imaging study is most appropriate for a pulmonary nodule
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CT (??)
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which imaging study is most appropriate for lung tumor
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CT
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which imaging study is most appropriate for interstitial lung disease
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CXR
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which imaging study is most appropriate for CHF
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CXR
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which imaging study is most appropriate for aortic aneurysm
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CT
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which imaging study is most appropriate for asthma
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x-ray???
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pneumonia
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x-ray
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What is the method for assessing cardiomegaly on a cxr
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heart should be less than half of the width of the chest (less than 1/3rd per the reading)
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