The heart is appears larger in AP than a PA chest x rays because: - ProProfs Discuss
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The heart is appears larger in AP than a PA chest x-rays because:



A. The film is closer to the heart
B. The film is farther from the heart
C. The AP x-ray is taken closer to the patient
D. The PA x-ray is taken closer to the patient

This question is part of Respiratory Therapy Quiz
Asked by Jcrubino, Last updated: May 03, 2020

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1 Answer

jcrubino

Jcrubino

Answered Jul 31, 2018

The film is farther from the heart

The heart is closer to the film when a P-A radiograph is taken because the film is placed in front of the patient and the x-rays penetrate from the back. Because of this, the hearts shadow is closer to normal size compared with that in the AP radiograph where the film is placed behond the patient.
 

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