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Three-dimensional endoscopic ultrasonography of gastrointestinal lesions using an ultrasound probe
1Second Dept. of Internal Medicine, Nagoya University School of Medicine, Japan.
Background:
This study was carried out to ascertain the clinical usefulness and problems of three-dimensional (3D) images obtained with the ultrasound probe.
Methods:
Eighteen resected specimens and 21 patients were examined. After the images were recorded on video, 3D displays were produced using a workstation.
Results:
In the in vitro study the surface images were quite consistent with the macroscopic findings in 17 cases. In 2 esophageal cancers, 7 of 10 gastric cancers, and 2 colonic cancers the depth of tumor invasion was assessed accurately from the reconstructed images. In the in vivo study although 3 D display had some limitations, it was useful in esophageal and rectal lesions.
Conclusions:
This new diagnostic method could visualize the 3D extent of gastrointestinal lesions and appears to have a useful clinical application.