Chest objectives
Terms
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- State the number of ribs seen on a good PA chest radiograph
- 10
- Explain why the patient should be upright whenever possible for a chest examination.
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-The diaphragm is at its lowest position
-Visualization of air/fluid levels
-Engorgement of pulmonary vessels is avoided - Describe the reason exposures are made on inspiration
- Ensures max. expansion of lungs
- Describe the reason chest radiographs are performed at 72⬝ SID
- Decrease magnification of the heart
- Describe how rotation is determined on a PA chest radiograph.
- Sternal ends of the clavicles equidistant from the vertebral column.
- Describe how rotation is determined on a lateral chest radiograph
- Superimposition of the ribs posterior to the vertebral column.
- Explain the importance of the arms being raised above the head for a lateral position.
- Arms at the patient’s sides would create an artifact.
- Explain why the patient is generally positioned in a left lateral position.
- it results in a less magnified heart image.
- Describe the location of the mediastinum.
- The area of the thorax bounded by the sternum anteriorly, the spine posteriorly, and the lungs laterally.
- List the structures associated with the mediastinum.
- Heart, great vessels, trachea, esophagus, thymus, lymphatics, fibrous tissue, fat.
- Explain why foreign bodies are more likely to pass into the right bronchus.
- The right lung is more vertical and is a larger diameter
- Explain the importance of using high kilovoltage when radiographing the chest.
- To penetrate and demonstrate all thoracic anatomy
- Explain the importance of positioning a patient for a true PA and lateral projection of the chest.
- A slight amount of rotation causes a significant distortion of the heart shadow.