25. Class 8 Corrosive Materials: Indicates the presence of substances that will corrode metals or dissolve organic tissues including human skin Class 9 Hazardous Materials: Miscellaneous 26. Class 9 Miscellaneou
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4、nowledge of radiologists.Thoracix Radiologic SignsThoracix Radiologic Signs1. Air bronchogram signAir bronchogram sign: Refers to the presence of air filled (patent) bronchi surrounded by air spaces filled with pus or fluid; simply indicates air space disease; e.g. pneumonia3. Bulging fissure ...
Additional views of the chest may be required in special instances (Table 1-1). Shallow oblique radiographs (15 degrees) may be useful in confirming the presence of a suspected nodule. Forty-five-degree oblique radiographs are recommended for the detection of asbestos-related pleural plaques. ...
Airbronchogramsign:Referstothepresenceofairfilled(patent)bronchisurroundedbyairspacesfilledwithpusorfluid;simplyindicatesairspacedisease;e.g.pneumonia Aircrescentsign:Referstotheairsurroundingaradioopaquematerialinacrescentricmanneralongbothitsinnerandoutermarginsindicatingcavitarydisease;e.g.aspergillomainanoldTBcavity ...