| International Session（Workshop）1(JGES・JSGE・JSGS・JSGCS) |
| Sat. November 23rd 9:30 - 12:00 Room 11: Portopia Hotel South Wing Topaz |
| Feasibility and limitations of EUS guided shear wave measurement for the pancreas | |||
| Eizaburo Ohno1, Yoshiki Hirooka2, Mitsuhiro Fujishiro1 | |||
| 1Nagoya University Graduate School of Medicine, Department of Gastroenterology and Hepatology, 2Fujita Health University, Department of Gastroenterology and Hepatology | |||
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| Purpose: The aim of this study was to evaluate the feasibility of newly developed EUS shear-wave elastography technique for the pancreatic lesions. Methods: We measured tissue stiffness in the pancreas by EUS-SWM in 160 patients including 44 focal pancreatic mass lesions since Dec. 2017 to Sep. 2018. The success rate of EUS-SWM, the velocity of the shear wave (Vs, m/s), and the reliability index of the Vs measurement (VsN) were evaluated. Additionally, we assessed the current applications and limitations of EUS-SWM. Results: A total of 3837 EUS-SWMs were performed and no adverse events were observed. Overall, 97.6% (3743/3837) of the EUS-SWMs were obtained successfully. The median VsN was 74%. The median Vs values of the pancreas were as follows: 2.22 m/s in the pancreatic head (push position), 2.36 m/s in the head (pull position), 1.99 m/s in the body, and 2.25 m/s in the tail respectively. For focal pancreatic lesions, the median Vs for pancreatic cancer(PC)(2.29m/s) was higher than that of pNEN(1.71m/s) and the median VsN for the PC was significantly lower value compared than other focal mass lesions.(18.7% vs 33.8%: P=0.0014) Conclusion: EUS-SWM is feasible technique but there are some limitations in measurement stability. |
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Index Term 1: EUS shear wave measurement Index Term 2: EUS elastography |
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