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17 Cards in this Set
- Front
- Back
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What is pathology |
Study of disease, characterizes specific histologic and molecular features of tissue |
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What are the different pathologic processes? |
Destructive (increased density) or additive (decreased density) |
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Describe the four different types of body habitus |
Hypersthenic, hyposthenic, sthenic, and asthenic |
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What is subject contrast? |
Differences in tissue densities, such as air, fat, water, bone, metal |
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What is radiographic contrast? |
The difference in density or blackness between two adjacent areas of a radiograph |
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Why is correct exposure factor selection important? |
Because it may hide or appear to create a pathologic finding |
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Why are patient position and projection critical? |
Incorrect positioning or projection may distort image |
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What is the best SID for portable exams and why? |
72' to reduce mag of heart |
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What is the preferred beam angle? |
Perpendicular beam to IR to avoid foreshortening of the heart |
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What is a pneumothorax? |
Collapsed lung, occurs when air leaks into the space between your lung and chest |
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What is a haemothorax? |
Blood within the chest |
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What does loculated indicate? |
Confined or localized to one area |
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What is a hydropneumothorax? |
Air & fluid in the chest |
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What is COPD and what are some radiographic indications of it? |
Chronic Obstructive Pulmonary Disease; hyperexpansion and bronchovascular markings |
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What is emphysema and what are some radiographic indications of it? |
Hyperinflated lungs (flattened diagphragms), upper lobes are relatively radiolucent compared to lower lobes |
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What is a bollous (bullae)? |
Air pocket within the lung |
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What is pneumomediastinum? |
Subcutaneous emphysema |
