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15 Cards in this Set
- Front
- Back
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How do x-rays passing through the body create an image?
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X-rays that pass through the body to the film render the film dark (black)
X-rays that are totally blocked do not reach the film and render the film light (white) Air = low atomic # = x-rays get through = film is dark Metal = high atomic # = x-rays blocked = film is light (white) |
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5 Basic Radiographic Densities?
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Air- black
Fat-light gray soft tissue/fluid-Medium Gray Mineral (bone)- white metal-bright white |
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What are the 4 things you should look for on a film?
*** ON TEST |
Size (heart
Shape and contour Position Density |
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Demonstrate the ability to optimally view images
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you want it to be dark and have limited distractions
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when reading a chest xray what are the things to look at?
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MD PLOTS
M = Mediastinum D = Diaphragms P = Pleura L = Lungs O = Osseous structures T = Trachea S = Stomach/soft tissues |
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what is the only view you see the edge of the right ventricle?
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Lateral
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what is the only chamber of the heart you can see in a lateral view
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right ventricle
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just read this
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which view has LESS magnification...AP or PA?
why? |
Less magnification on a PA Chest radiograph because:
The heart is closer to the cassette X-ray source is 6 ft. from the cassette |
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what is the cardiothoractic ratio?
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if the transverse cardiac diameter measures more than half of the greatest internal diameter of the chest, it is considered enlarged
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be able to recognize the borders of the heart
flip to see |
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What is the magnification difference between an AP and a PA view?
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AP are magnified 15-20%
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What are the benefits of:
PA view AP view Lateral or decubitis view Inspiratory view Expiratory view |
PA view- less magnification
AP view- this is mobile lateral or decubitis- use to look for fluid in the chest or free air in the abdomen Inspiratory- ideal for any chest x ray, heart is raised, diaphragm is flattened and lowered Expiratory- best when looking for a pneumothorax |
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It is abnormal to see vasculature in what portion of the lung?
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If you divide the lung into interior, middle and lateral portions, you should not see any vessels in the lateral portion.
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