Westermark sign 是指當pulmonary embolus (PE)發生時,血栓如果剛好塞在肺門的血管處時,會使得栓塞處遠端血管減少(oligemia... ... <看更多>

license. In chest radiography, the Westermark sign is a sign that represents a focus of oligemia (hypovolemia) (leading to collapse of vessel) ... ... <看更多>

Radiographic signs of pulmonary embolus (not causing infarction) are all except a. Localized peripheral oligaemia (Westermark's sign) b. ... <看更多>