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Endoscopy is an important technique in medicine to diagnose internal organs. Video endoscopy has been the most common technique providing clear, real time video images of organs' surfaces. However, this technique only images the surface and cannot effectively diagnose diseased tissues that develop in endothelial tissues. Endoscopic ultrasound (EUS) has been developed to overcome this limitation, and it is widely utilized in diagnosing GI diseases. This technique can image very deep areas of organs, up to several centimeters; however, it suffers from speckle artifacts and cannot adequately provide early diagnosis of tissue abnormalities that do not show mechanical properties that differ significantly from those of normal tissues.
The investigators propose that photoacoustic endoscopy (PAE), an endoscopic embodiment of the rapidly growing photoacoustic tomography (PAT) technology, can fulfill the aforementioned need.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Arm 1: PAE assessment | Experimental | -The PAE-EUS assessment will be performed in the operating room by the after induction of general anesthesia and following strict sterile technique while the patient is being positioned and prepped for esophageal surgery. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Photoacoustic endoscopy | Procedure |
|
| |
| Endoscopic ultrasound (standard of care) |
| Measure | Description | Time Frame |
|---|---|---|
| Feasibility of PA endoscopic imaging as an alternative real-time noninvasive tool for evaluation of Barrett's esophagus as measured by the agreement between the PA imaging system and the standard esophageal biopsy for diagnosing Barrett's epithelium | -The investigators will image a series of human esophagi in patients with an established diagnosis of Barrett's esophagus with/without dysplasia to fine-tune the PA imaging system. The investigators will assess the agreement between the PA imaging system and the standard clinical practice of four-quadrant esophageal biopsy previously performed in this cohort of patients as part of his/her active surveillance program. | Day 1 |
| Sensitivity and specificity of PA endoscopic imaging for identification of Barrett's epithelium compared to esophageal biopsy | -The investigators will image a series of human esophagi in patients with an established diagnosis of Barrett's esophagus with/without dysplasia to fine-tune the PA imaging system. The investigators will assess the agreement between the PA imaging system and the standard clinical practice of four-quadrant esophageal biopsy previously performed in this cohort of patients as part of his/her active surveillance program. | Day 1 |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Bryan F Meyers, M.D., M.P.H. | Washington University School of Medicine | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Washington University School of Medicine | St Louis | Missouri | 63110 | United States |
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| Label | URL |
|---|---|
| Alvin J. Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine | View source |
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| ID | Term |
|---|---|
| D001471 | Barrett Esophagus |
| ID | Term |
|---|---|
| D011230 | Precancerous Conditions |
| D009369 | Neoplasms |
| D004935 | Esophageal Diseases |
| D005767 | Gastrointestinal Diseases |
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| ID | Term |
|---|---|
| D059039 | Standard of Care |
| D004724 | Endoscopy |
| ID | Term |
|---|---|
| D019984 | Quality Indicators, Health Care |
| D011787 | Quality of Health Care |
| D006298 | Health Services Administration |
| D017530 | Health Care Quality, Access, and Evaluation |
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| Procedure |
|
|
| Endoscopic surgery (standard of care) | Procedure |
|
| D004066 |
| Digestive System Diseases |
| D003949 | Diagnostic Techniques, Surgical |
| D019937 | Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |
| D019060 | Minimally Invasive Surgical Procedures |
| D013514 | Surgical Procedures, Operative |