A spine patient's plan calls for a couch shift of 1.0 cm superior and 0.5 cm toward the patient's right after verification imaging, and the record lists beam energy, field size, and monitor units for each beam. The patient is already aligned with the immobilization device and skin marks. Which pre-treatment verification covers every item stated for this fraction?
Select an answer to reveal the explanation.
Short Explanation
You’ll protect this fraction by checking the image, the full shift, and every beam setting—each can be wrong even when the others look right. Match the image, confirm shift direction and distance, and compare all console beam settings with the record before treatment.
Full Explanation
The complete verification matches the verification image to its reference, confirms the prescribed couch shift in both direction and distance, and compares every console beam setting—energy, field size, and monitor units—with the treatment record. Checking the image and full shift along with energy and monitor units still leaves field size unchecked; image alignment and the other settings cannot establish that the field geometry matches the plan. Checking the image and full shift along with energy and field size leaves monitor units unchecked, a separate treatment parameter that cannot be inferred from the other settings. Checking the image and full shift along with field size and monitor units leaves beam energy unchecked; those parameters do not verify the selected energy. Each partial check covers relevant items but misses a distinct stated requirement. Exam caveat: alignment with immobilization and skin marks does not replace image-based verification or confirmation of a planned correction. Practical check: before beam delivery, reconcile the image, shift vector, and each beam’s energy, field size, and monitor units with the approved record, and resolve any discrepancy.