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to meet requirements for 1 . 3 Cap(passive) must be designedThoracic artificial lungs
mucus plugging , air - trapping on expiration , multiple nodules and bronchiectasis(passive) caused bymosaic attenuation
airway obstruction(passive) caused bythe mosaic pattern of lung attenuation
Three different processesmay causea mosaic pattern of lung attenuation
Small airways diseasecan causea mosaic pattern of lung attenuation
mechanical ventilationcan cause‘ heterogeneity ’ of the lungs
variables for inclusion ... subject - specific , scanner - specific , and protocol - specific factorsinfluencelung attenuation
a type of conditioncauseshardening of the lungs
tubes within an embryo 's developing chest split over and over againto createdelicate , branched lungs
Small airways diseasecausesSmall airways disease
a trifold compromise of the airways , arterial blood supply and the venous - lymphatic drainage 13createsa trifold compromise of the airways , arterial blood supply and the venous - lymphatic drainage 13
to secondary vasoconstriction , which is seen on CT scans as areas of decreased attenuationleadsto secondary vasoconstriction , which is seen on CT scans as areas of decreased attenuation
from regional differences in lung perfusion airways disease or vascular obstruction patchy areas of varying lung attenuation relatively small vessels in regions of low attenuation airway abnormalities in regions of low attenuation 65resultingfrom regional differences in lung perfusion airways disease or vascular obstruction patchy areas of varying lung attenuation relatively small vessels in regions of low attenuation airway abnormalities in regions of low attenuation 65
of areas of ground glass opacities and air - trappingcomposedof areas of ground glass opacities and air - trapping
in geographical variation in perfusion characterised by sharply demarcated regions of hypo - attenuationresultingin geographical variation in perfusion characterised by sharply demarcated regions of hypo - attenuation
to a lung collapseleadsto a lung collapse
to infectionmay leadto infection
to imbalance in ventilation and perfusion processesmay leadto imbalance in ventilation and perfusion processes
shortness of breathcausesshortness of breath