Endoscopic Ultrasound (EUS) Processor Comparison

The endoscope is usually connected to a processor that generates an image which is viewed on a monitor. At FH, we use a processor called Aloka 10. A new processor is being developed by Olympus Corporation called EU-ME 2. This new processor is FDA approved, but has not been launched commercially yet. It has been loaned to FH for evaluation. We would like to evaluate this processor in an objective manner and hence the request for study approval. In this study, the endoscopy during the procedure will be attached to two different processors and images will be generated. The choice of which processor will be used first will be at the discretion of the Endoscopist. This does not require removal and reintroduction of the endoscope into the patient at two occasions. Only the connector will be switched to a different processor. So there is negligible risk to the patient. The time required for research activities will be between 5-10 minutes. Both processors will be set up in the procedure room for the duration of this study. The physician will then document the depth of penetration of the image (the farthest structure seen) and image resolution (evaluating the pancreas for subtle abnormalities). Both processors will be used for each patient. The scores for each processor will be documented to a procedure log, using the primary endpoint described above. The CRF will not have any patient information. Images viewed by the physician at the time of procedure will not be saved or recorded as part of this study.. EUS will be performed in the standard fashion by one of the experienced endosonographers in the unit. Once the EUS is complete, the procedure will be stopped and the echoendoscope withdrawn from the patient. Patients will then be transported to the recovery area for observation as per standard policy. After appropriate observations are deemed satisfactory, patients will be discharged as per unit policy.