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Transnasal US of the esophagus: preliminary morphologic and function studies
J B Liu1, L S Miller, B B Goldberg
1Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, PA 19107.
Radiology
|September 1, 1992
Summary
Transnasal esophageal ultrasound (US) visualizes esophageal wall layers and abnormalities. This advanced imaging technique shows promise for diagnosing conditions like achalasia and scleroderma.
Area of Science:
- Gastroenterology
- Medical Imaging
- Endoscopy
Background:
- Esophageal wall structure evaluation is crucial for diagnosing various gastrointestinal conditions.
- Current diagnostic methods may have limitations in visualizing specific esophageal layers and subtle abnormalities.
Purpose of the Study:
- To assess the feasibility and diagnostic potential of high-frequency catheter-based transnasal ultrasound for esophageal imaging.
- To correlate ultrasound findings with histological data and clinical diagnoses.
Main Methods:
- In vitro studies on sheep esophagus specimens.
- In vivo studies on healthy human subjects and patients with esophageal abnormalities.
- High-frequency catheter-based ultrasound (US) transducers inserted transnasally.
Main Results:
- Endoluminal US accurately delineated seven esophageal wall layers, correlating with histology.
- Ultrasound identified characteristic findings in achalasia (LES thickening), esophagitis (submucosal vascular dilation), and scleroderma (muscular fibrosis).
- Extramural esophageal structures were also visualized.
Conclusions:
- Transnasal esophageal ultrasound is a promising, non-invasive tool for evaluating esophageal wall structures.
- It demonstrates potential for diagnosing esophageal diseases, including achalasia, scleroderma, and esophagitis.
- Further research may establish transnasal esophageal US as a valuable diagnostic modality.