A 62-year-old outpatient with progressive dysphagia is scheduled for an esophagram to evaluate a mid-esophageal lesion. The radiologist wants live swallowing dynamics plus distended mucosal detail, with no gastric or small-bowel follow-through. Which contrast administration sequence should the radiographer prepare for this esophagram swallowing study?

Thin barium sips under fluoroscopy with spot images, followed by effervescent granules and a high-density barium bolus, provide the requested functional and mucosal assessment while keeping the examination limited to the esophagus. The live phase shows swallowing dynamics, peristalsis, stricture transit and aspiration; the subsequent distension and coating help reveal plaques, ulceration or mass detail. Continuous thin barium sips with spot images assess motility, but without a distended mucosal phase, the liquid washes away quickly and does not provide the adherence and distension needed to characterize mucosal lesions. A barium paste bolus with effervescent granules can provide distended mucosal coating, but without live fluoroscopy it omits real-time peristalsis and transit assessment central to dysphagia. Water-soluble contrast sips with spot images followed by effervescent granules are not the preferred sequence when the esophagus is presumed intact: water-soluble agents are reserved for suspected leak, perforation or postoperative states and provide inferior mucosal definition compared with barium. Exam caveat: choose water-soluble contrast when perforation is suspected, rather than assuming it is interchangeable with barium. Practically, confirm the esophagus-only order, verify NPO status and aspiration precautions, preset pulsed fluoroscopy and spot imaging, and have the effervescent granules and high-density barium ready after the motility runs while the patient remains positioned.