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Pan H, Zhang S, Lu Y, Han Z, Li X, Li Z, Cui Y, Han M, Li R. Ultrathin endoscope equipped with ultrasonic miniprobe for upper GI US in a porcine model. Gastrointest Endosc 2024; 99:108-115.e1. [PMID: 37739237 DOI: 10.1016/j.gie.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/08/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
BACKGROUND AND AIMS Ultrathin EGD (UT-EGD) is an ideal tool for unsedated upper GI examination and pediatric gastroenterology but is rarely competent for EUS miniprobe (EUS-MP). We developed a UT-EGD US method (UT-EUS) and verified its clinical application value through animal experiments. METHODS Five Bama miniature pigs were selected. Using an acoustic medium, we performed US on the duodenum, stomach, and esophagus, respectively, with conventional 20-MHz EUS miniprobe (EUS-MP-20), 20-MHz UT-EUS (UT-EUS-20), and 30-MHz UT-EUS (UT-EUS-30). The times to acquire 5 consecutive stable US images, number of identifiable wall layers, and quality and penetration depth of the images were recorded. RESULTS No significant differences were found in the time required to obtain images between EUS-MP-20 and UT-EUS-20 at each site (P > .05). UT-EUS-30 showed more wall levels than UT-EUS-20 (P < .05). No significant differences were noted between EUS-MP-20 and UT-EUS-20 in imaging quality and penetration depth (P > .05). CONCLUSIONS The UT-EUS is easy to use with a satisfactory image quality and has potential clinical application value.
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Affiliation(s)
- Hanchao Pan
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Siyue Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yongda Lu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhile Han
- The Medical Ultrasound Department, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Xinze Li
- The Medical Ultrasound Department, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Zhangjian Li
- The Medical Ultrasound Department, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Yaoyao Cui
- The Medical Ultrasound Department, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Mei Han
- Department of Health Management Center, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Rui Li
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
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Zhao M, Nie H, Wang H, Fang J, Wang F, Wang H, Yu H, Bai X, Zhang Y, Xiong Q, Cai H, Zhao Q. Novel oviduct endoscope combining optical coherence tomography with intratubal ultrasonography for fallopian tube exploration: An in vivo rabbit pilot study. Photodiagnosis Photodyn Ther 2023; 43:103650. [PMID: 37302641 DOI: 10.1016/j.pdpdt.2023.103650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/26/2023] [Accepted: 06/05/2023] [Indexed: 06/13/2023]
Abstract
BACKGROUND AND STUDY AIM Currently, several limitations exist in the examination of the oviduct. In this study, the usefulness and feasibility of a novel ultrafine dual-modality oviduct endoscopy device for in vivo assessment of the oviduct were evaluated. METHODS Five Japanese white rabbits were selected to undergo oviduct probing using a combination of optical coherence tomography (OCT) and intratubal ultrasonography. The feasibility of the procedure was evaluated through 152 pairs of clear, clinically interpretable images obtained using spiral scanning via the pull-back method. OCT images were compared with the oviduct histopathology sections. RESULTS Visualization of the oviduct using both OCT and ultrasound revealed a differentiated three-layer tissue; however, ultrasound showed a poorer clarity than OCT. By comparing OCT images with the histological morphology of the oviduct, the inner low-reflective layer of the oviduct corresponds to the mucosal layer, the middle high-reflective layer corresponds to the fibrous muscle layer, and the outer low-reflective layer corresponds to the connective tissue layer. Postoperatively, the general condition of the animals was good. CONCLUSION This study demonstrated the feasibility and potential clinical value of the novel ultrafine dual-modality oviduct endoscope. Dual-modality imaging of OCT and intratubal ultrasonography can provide clearer microstructure of the oviduct wall.
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Affiliation(s)
- Mengya Zhao
- Department of Gynecologic Oncology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Haihang Nie
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Hongling Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Jun Fang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Fan Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Haizhou Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | - Hualiang Yu
- InnerMedical Co. Ltd, Shenzhen 518000, China
| | | | - Yafei Zhang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China
| | | | - Hongbing Cai
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Qiu Zhao
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Clinical Center and Key Lab of Intestinal and Colorectal Diseases of Hubei Province, Wuhan 430071, China.
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