Feasibility of Newly Developed Endoscopic Ultrasound with Zone Sonography Technology for Diagnosis of Pancreatic Diseases.
- Author:
Yoshiki HIROOKA
1
;
Akihiro ITOH
;
Hiroki KAWASHIMA
;
Eizaburo OHNO
;
Yuya ITOH
;
Yosuke NAKAMURA
;
Takeshi HIRAMATSU
;
Hiroyuki SUGIMOTO
;
Hajime SUMI
;
Daijiro HAYASHI
;
Naoki OHMIYA
;
Ryoji MIYAHARA
;
Masanao NAKAMURA
;
Kohei FUNASAKA
;
Masatoshi ISHIGAMI
;
Yoshiaki KATANO
;
Hidemi GOTO
Author Information
1. Department of Endoscopy, Nagoya University Hospital, Nagoya, Japan. hirooka@med.nagoya-u.ac.jp
- Publication Type:Original Article
- Keywords:
Endosonography;
ZONE sonography technology;
Enhanced attenuation;
Automatic adjustment of sound speed
- MeSH:
Endoscopes;
Endosonography;
Humans;
Judgment;
Mucins;
Pancreatic Diseases
- From:Gut and Liver
2013;7(4):486-491
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND/AIMS: To confirm the feasibility of using newly developed endoscopic ultrasound (EUS) with Zone sonography(TM) technology (ZST; Fujifilm Corp.). METHODS: Seventy-five patients with pancreatic disorders were enrolled: 45 with intraductal papillary mucinous neoplasm; 15 with ductal carcinoma; five with neuroendocrine tumors; three with serous cystic neoplasms; and seven with simple cysts. The endoscopes used were EG-530UR2 and EG-530UT2 (Fujifilm Corp.). Two items were evaluated: visualization depth among four frequencies and image quality after automatic adjustment of sound speed (AASS), assessed using a 5-scale Likert scale by two endosonographers blinded to disease status. Because sound speed could be manually controlled, besides AASS, image quality at sound speeds of 1,440 and 1,600 m/sec were also assessed. RESULTS: In all cases, sufficient images were obtained in the range of 3 cm from the EUS probe. Judgments of image quality before AASS were 3.49+/-0.50, 3.65+/-0.48, respectively. After AASS, A and B scored 4.36+/-0.48 and 4.40+/-0.49 (p<0.0001). There were significant differences in the data before and after AASS and plus 60 m/sec, but no significant difference between the datasets were seen after AASS and at sound speeds manually set for minus 100 m/sec. CONCLUSIONS: EUS with ZST was shown to be feasible in this preliminary experiment. Further evaluation of this novel technology is necessary and awaited.
