The timed esophageal transit study (TEM) is a radiological examination performed to evaluate the movement of the esophageal muscles during swallowing. The exam involves swallowing a small amount of liquid containing a radiopaque contrast material, followed by a series of X-rays taken at specific intervals to observe the movement of the liquid through the esophagus. TEM is used to diagnose esophageal disorders such as achalasia, gastroesophageal reflux, tumors, among others.
TEM is performed in a radiology room and usually takes 30 to 60 minutes. The patient sits or stands upright and is asked to swallow the contrast liquid. X-rays are then taken at specific intervals, usually every one to two minutes, to observe the movement of the liquid through the esophagus. During the exam, our doctors may ask the patient to change positions or swallow in different ways to assess the function of the esophagus in different situations.
TEM is a safe and non-invasive exam, although it may cause discomfort or nausea due to the ingestion of contrast fluid. It is important to follow the instructions before the exam, such as refraining from eating or drinking before the procedure.
In general, TEM is a useful test for evaluating esophageal function and detecting possible conditions. However, other tests, such as endoscopy or esophageal manometry, can also be used to evaluate the esophagus and detect possible problems. The type of test used will depend on the patient's specific condition and medical needs.
