Question
Download Solution PDFWhat is the standard positioning for a lateral chest X-ray?
Answer (Detailed Solution Below)
Option 2 : Patient standing with their left side against the image receptor
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Detailed Solution
Download Solution PDFCorrect Answer: Patient standing with their left side against the image receptor
Rationale:
- In a lateral chest X-ray, the patient stands with their left side against the image receptor. This positioning is chosen to minimize the magnification of the heart and to provide a clear view of the lungs, heart, and other thoracic structures.
- This position allows for better visualization of the left lung and the heart, as these structures are closer to the image receptor and thus appear more accurately sized and detailed.
Explanation of Other Options:
Patient lying on their back
- Rationale: This position is not used for a lateral chest X-ray as it does not provide a clear lateral view of the chest. Instead, it is typically used for a supine (AP) chest X-ray, where the patient is lying down and the image is taken from above.
Patient standing with their right side against the image receptor
- Rationale: Although this position could technically be used, it is less common than the left-side approach. The left lateral position is preferred because it reduces the magnification of the heart, which is closer to the left side of the body.
Patient standing facing the X-ray tube
- Rationale: This is the positioning for a posteroanterior (PA) chest X-ray, not a lateral chest X-ray. In a PA chest X-ray, the patient faces the image receptor with their back to the X-ray tube to provide a front view of the chest.
Conclusion:
- The standard positioning for a lateral chest X-ray involves the patient standing with their left side against the image receptor. This positioning minimizes heart magnification and provides a detailed view of the thoracic structures. Other positions mentioned are used for different types of chest X-rays or are less preferred for lateral views.
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