Final answer:
Fluoroscopy is the term used for intraoperative x-rays during a cholecystectomy, providing real-time imaging critical for guiding the surgery.
Step-by-step explanation:
The term used when requiring intraoperative x-rays during a cholecystectomy is fluoroscopy. Fluoroscopy allows the surgical team to visualize the patient's internal structures in real-time, aiding in the surgical procedure. This imaging technique is often used in procedures where constant feedback on the position and progress of surgical instruments is vital. Unlike ultrasonography, which uses high-frequency sound waves and is often used during pregnancy due to its non-invasive nature, fluoroscopy provides continuous X-ray imaging that is better suited for guiding surgical interventions.