An imaging system, including a capsule, configured to enter an esophagus of a patient, having an ultrasonic transducer configured to image tissue of the patient. The system further includes an applicator tube configured to enter the esophagus, the tube being attachable to the capsule for positioning the capsule within the esophagus, and being detachable from the capsule after positioning of the capsule so as to permit the tube to be withdrawn from the esophagus while the capsule remains in position in the esophagus.
