A left lateral sternal projection with poor positioning demonstrates the superior heart shadow ex-tending beyond the sternum into the anteriorly located lung. How should the patient be reposi-tioned for an optimal projection to be obtained?
1. Rotate the left thorax posteriorly.
2. Position the arms behind the patient's back.
3. Take the exposure on deep inspiration.
4. Rotate the right thorax anteriorly.
a. 1 only
b. 1 and 4 only
c. 2 and 3 only
d. 3 and 4 only
e. 4 only
B
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