Flashcards
X-ray interpretation
Flashcards do conjunto (17)
- 1X-ray basicsskill of radiographer dictated quality of image
- 2Five radiographic image quality characteristicsdictates image quality
geometry, artifacts, blur, contract sensitivity, noise - 3contrast sensitivitydetermines what tissues and body structures are visible in a radiograph
many factors that have affect on contrast sensitivity are:
anatomical environment, spectrum, scatter, film - 4total attenuationgradual loss of intensity through a medium
determined by photoelectric and compton interactions
decreases with increased photon energy, because energy is dependent on photoelectric effect - 5x-ray image is formed bydifferent attenuations of x-ray beams within a patient's body. objects with increased attenuation produce shadows
- 6penetrationdegree to which x-rays have passed through the body
- 7penetrationincreased penetration through an object decreased contrast, and increased penetration through total body decreases radiation dose to the patient
- 8changing kvprinciple control of contrast in radiography
- 9the x-ray imageis the form of a shadow from the patient's body
- 10what makes an x-ray readbaleimage artifacts
target view
bones
soft tissue
vessels
patient factors - 11chest x-ray- consolidationpathologic process that fills alveoli with fluid, blood, pus, resulting in lobar, diffuse mulitfocal ill-defined opacities
- 12chest -x-ray interstitialinvolvement of supporting tissue of lung parenchyma, resulting in fine or coarse reticular opacities or small nodules
- 13chest x-ray nodule or massany space occupying lesion either solitary or multiple
- 14atelectasiscollapse of part of the lung, due to decrease in amount of sir in alveoli, resulting in volume loss and increased density
- 15limitations of chest radiographysome conditions are not detected on conventional chest x- ray, e.g. small cancers, blood clot such as pulmonary embolism
further imaging studies:
MRI
CT
PET
US - 16xray risk/benefit analysisbenefits: no radiation remain in patients body, no side effects, inexpensive, fast, useful in emergency
risks: slight chance of cancer from excessive exposure, women should inform if they are pregnant - 17nursing considerationspatient protection, staff protection, positioning, optimal image in shortest exposure time
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- O usuário eliminou as informações de disciplina FlashCards sobre X-ray interpretation, criado por Usuário eliminado em 13-06-2018.
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- Criado por Elizabeth Then · 13 jun 2018
- Copiado por Elizabeth Then · 13 jun 2018
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