HUMB2009 Final: RESPIRATORY 5

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Document Summary

Ct, mri and pet ct allow study of lymph nodes. Ct +iv vascular structures and malignancy studies. Ct recon volume rendering, remove part of lungs and ribs to show heart. Pet ct - useful for staging of lung tumors. Hard as heartbeat creates artefacts but higher contrast resolution and more definition. First approach for heart and mediastinum (but not the lungs) Mri allows best study of lung tumours and their spread, if homogenous or not. Mri shows tumor malignancy and spread better than ct as seen in the image above. Obstructive atelectasis tumor, inflammation, infection, foreign body, mucus. Compressive atelectasis by pneumothorax, pleural effusion, hemi thorax. Resorption = mucus plugging (cf), tumor, foreign body. Air cannot enter the affected part of the lung. Local increased density varying from thin to platelike streaks to lobar collapse. Enlargement + displacement of heart, mediastinum and hilum towards. Blurring of heart boarder silhouette sign. Blurring of right heart border (silhouette sign)