What imaging technique would be most useful to determine which patients with emphysema may benefit from lung volume reduction surgery?
a. Chest HRCT
b. CT angiography
c. MRI
d. Ultrasound
ANS: A
HRCT is far more sensitive and may show evidence of emphysema even when pulmonary func-tion test results are normal. For example, Figure 21-24 demonstrates a case of upper lobe para-septal emphysema, characterized by cysts on the pleural surface. Chest CT may prove useful to define which patients may benefit from treatments such as lung volume reduction surgery.
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Gamma rays differ from x-rays
a. extremely hazardous and may be much higher than background levels. b. moderately hazardous and may be higher than background levels. c. slightly hazardous and may be only slightly higher than background levels. d. diluted and may not be much higher than background levels.
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a. gentamycin. b. penicillin. c. streptomycin. d. isoniazid.
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Fill in the blank(s) with correct word