Which tracer is common for imaging gastroesophageal reflux in both adults and children?

The choice of tracer often utilized for imaging gastroesophageal reflux (GER) in both adults and children includes 99mTc sulfur colloid. This radiopharmaceutical is used due to its properties that enable the visualization of gastric contents and their movement back into the esophagus during a reflux study. The sulfur colloid can label the gastric contents effectively, allowing clinicians to assess the presence and severity of reflux when combined with imaging techniques.

In nuclear medicine studies for GER, it's crucial to have a tracer that provides clear images of the gastrointestinal tract and displays the dynamics of the reflux, and 99mTc sulfur colloid fulfills this requirement excellently. Additionally, it is safe for use in both pediatric and adult populations, making it versatile for a range of patients.

Other tracers mentioned, such as macro-aggregated albumin and MAA with an abdominal binder, are not typically used for this specific indication. While dilute hydrochloric acid with tracer may be relevant in some contexts, it is not as commonly used for routine GER studies in nuclear medicine settings. Thus, the use of 99mTc sulfur colloid is well-established and highly appropriate for this purpose.