| Theme |
Endoscopic Ultrasonography |
| Title |
A Basis of Ultrasonographic Examination for Gastric Lesions by Miniature Probe |
| Author |
Junji Yoshino |
Department of Internal Medicine, Second Hospital, Fujita Health University Scool of Medicine |
| [ Summary ] |
It is possible to use a miniature probe continuously in ordinary endoscopy though a biopsy channel. It is useful for lesions with stenosis. This is especially lesions in the pre-pyloric area and he fornix, where it is difficult to store de-aerated water in the stomach are easily obtained with ultrasonic images. Ultrasonic images of minute or small relatively lesions were obtained more easily than with endoscopic ultrasonography (EUS) because the sites of the lesions are confirmed by endoscopic observation. Then these lesions are thought to be suitable for the ultrasonographic examination using a miniature probe. Three-dimensional ultrasonic endoscopy (3D-EUS) using a miniature probe has been developed. It is thought that 3D-EUS will be widely used in the near future. On the other hand, a whole image of the stomach is not possible by using a miniature probe because the diameter of the stomach is too great. Images from miniature probes are not better than those from ordinary EUS having the same frequency, because the transducer of a miniature probe is smaller. Large lesions are difficult to observe in images by miniature probes. |