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diagnosis radiology clinical radiologyassistant ctchest differential management pulmonary comparison algorithm hrct pattern psychiatry table criteria cxr grading lung signs workup
Mosaic Attenuation on Chest CT • Variable attenuation seen on a chest CT in a lobular
Mosaic Attenuation ... CT • Variable attenuation ... .2016.12.033 #Mosaic #Attenuation
Mosaic attenuation The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
Mosaic attenuation ... The term 'mosaic attenuation ... presents as mosaic attenuation ... MosaicAttenuation #Mosaic #Attenuation
It can be difficult to distinguish these three entities. There are two diagnostic hints for further differentiation: -
MosaicAttenuation #Mosaic #Attenuation
Chronic hypersensitivity pneumonitis The key findings in chronic hypersensitivity pneumonitis are: Mosaic pattern with areas of ground-glass atenuation
of ground-glass atenuation ... and areas of low attenuation ... nodules of increased attenuation
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions. These include: - Emphysema -
decreased lung attenuation ... diseases with a low attenuation
Low Attenuation pattern 1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation ... emphysema: low attenuation
Low Attenuation pattern (2) 1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation ... emphysema: low attenuation
High-Res Chest CT Patterns - Differential Diagnosis Framework Reticular: • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Honeycombing - See Low Attenuation ... Bronchopneumonia High Attenuation ... Water, Tumor Low Attenuation
Using Stroke Windows for Detecting Ischemia on Head CT When evaluating a CT head for possible stroke,
tissues of differing attenuation ... tissues of similar attenuation
High Attenuation pattern (2) 1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
High Attenuation
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