chest x-rays€¦ · the general findings in a normal chest x-ray. some common chest x-ray...
TRANSCRIPT
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Chest X-rays
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Chest x-ray
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Types of Views
Superimposed images PA – posterior-anterior Also: AP, lateral, oblique, lordotic Lateral decubitus
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Introduction to Chest Radiology
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Mediastinum Thymus Heart Trachea Esophagus Aorta Lymph nodes Anterior – sternum Posterior – vertebrae
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Opacities, Infiltrates
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Effusions
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Chest X-ray Terms Nodule – discrete opacity (usually small) Granuloma – nodule due to inflammation (e.g. past
infection or foreign body/antigen); Can become fibrosed/calcified
Caseating/Non – Cells necrotic/not; TB/sarcoid-CBD Calcified Granuloma – usually benign Bulla – bubble, round, hollow air filled cavity Bleb – bulla on pleura Atelectasis – area of collapsed lung Reticular – cris-crossing lines Honeycombing – fibrous walled cysts – e.g. asbestosis Ground glass - refers to the presence of increased hazy
opacity within the lungs - CBD
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International Labour Organization (ILO) Classification Pneumoconiosis Pulmonary medicine
ILO Classification – System for recording abnormalities in Chest X-Rays resulting from the inhalation of dusts. (Pneumoconioses)
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ILO Classification
Standardizes Quantifies “B” Readers - certified
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ILO Classification
Quality – Contrast Parenchyma Pleura
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“Profusion”
Categories 0, 1, 2, 3 (4 levels) 12-point scale (continuous scale) 0/- 0/0 0/1 1/0 1/1 1/2 2/1 2/2 2/3 3/2 3/3 3/+ shape, size, location s,t,u, (irregular) p,q,r (regular)
1/0 presumptive but not unequivocal
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ILO Chest x-ray 0/0
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ILO 3/3 r/r
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Chest X-Ray Interpretation is an inexact science
Inter-reader variability Intra-reader variability
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ILO 3/3 t/t
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ILO Summary
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What We have Covered The general findings in a normal chest x-ray. Some common chest x-ray findings. The basis for the International Labor Office (ILO)
classification. What a 1/0 B reading means. What organs/structures are in the mediastinum. How to recognize normal from grossly abnormal
chest x-rays.
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Questions