attentuation/pathology
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| Define attenuation | show 🗑
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| show | exponentially
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| Define density | show 🗑
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| show | hydrogen (1)
carbon (6)
nitrogen (7)
oxygen (8)
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| show | air, fat, muscle & bone
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| show | 7.78
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| show | 6.46
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| What is the approximate atomic number of muscle? | show 🗑
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| What is the approximate atomic number of bone? | show 🗑
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| Define pathology | show 🗑
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| show | 25-50
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| How do additive conditions affect attenuation? How do you compensate? | show 🗑
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| abscess | show 🗑
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| edema | show 🗑
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| show | abnormal tissue growth (additive)
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| show | collapsed lung (additive)
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| bronchiectasis | show 🗑
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| show | enlarged heart (additive)
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| congestive heart failure | show 🗑
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| show | pus in thoracic cavity (additive)
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| pleural effusion | show 🗑
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| pneumoconiosis | show 🗑
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| show | removal of a lung (additive)
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| show | inflammation causing fluid in aveolar spaces (additive)
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| show | fluid in lung and alveoli (additive)
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| show | infection causing fluid in lungs (additive)
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| aortic aneurysm | show 🗑
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| show | fluid in peritoneal cavity (additive)
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| show | (additive)
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| cirrhosis | show 🗑
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| acromegaly | show 🗑
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| chronic osteomyelitis | show 🗑
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| hydrocephalus | show 🗑
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| osteoblastic metastases | show 🗑
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| show | tumor in bone and cartilage (additive)
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| show | increased bone growth (additive)
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| sclerosis | show 🗑
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| show | decreased attenuation; decrease mAs 25-50%
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| show | extreme weight loss (destructive)
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| show | wasting away of tissue (destructive)
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| emaciation | show 🗑
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| show | excess air in lung (destructive)
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| pneumothorax | show 🗑
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| show | swallowing of air
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| show | causes accumulation of air & fluid (destructive)
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| active osteomyelitis | show 🗑
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| aseptic necrosis | show 🗑
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| carcinoma | show 🗑
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| degenerative arthritis | show 🗑
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| fibrosarcoma | show 🗑
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| gout | show 🗑
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| hyperparathyroidism | show 🗑
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| multiple myeloma | show 🗑
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| osteolytic metastases | show 🗑
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| show | defect in bone mineralization (destructive)
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| osteoporosis | show 🗑
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