Endoscopic Doppler probe ultrasonography for post‐endoscopic submucosal dissection ulcer: New device to show blood flow depth

Shiratori, Yasutoshi; Ikeya, Takashi; Fukuda, Katsuyuki

doi:10.1111/den.13518

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…The Doppler Box DOP system (Compumedics, DWL, Germany; ▶ Fig. 2) and probe are marketed for use in vascular surgery departments [13]. The 16-MHz Doppler probe has a length and diameter of 2 m and 1 mm, respectively, and is reusable after gas sterilization or high-level liquid disinfection.…”

Section: Doppler Probe Ultrasonography Methodsmentioning

confidence: 99%

Endoscopic Doppler probe ultrasonography for detecting blood flow at post-endoscopic submucosal dissection ulcers of the stomach

et al. 2020

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Background and study aims The rate of early rebleeding after endoscopic submucosal dissection (ESD) for early gastric cancer ranges from 5 % to 38 %, despite application of preventive methods. Post-ESD rebleeding may be caused by “invisible” vessels that may not be detectable using ultrasonographic techniques. Recently, Doppler probe ultrasonography (DOP) has been used in endoscopy. Because little is known about the usefulness of DOP for decreasing the post-ESD rebleeding rate, we performed a preliminary case series study. Patients and methods Twelve patients underwent DOP for post-ESD ulcer evaluation after visible vessel coagulation. In this study, the novel DOP system used in the vascular surgery department was used. DOP-positive invisible vessels were shown as a pulse wave on the monitor. Results No (0 %) cases of post-ESD rebleeding occurred. Twenty invisible vessels were detected, and 13 were subjected to additional coagulation up to a depth of 3 mm. Mean DOP procedure time was 11.6 minutes (range: 8–18 minutes). In these latter cases, disappearance of the Doppler pulse wave was confirmed. No early rebleeding or other adverse events were experienced. Conclusion DOP is a safe and feasible method for detecting invisible vessels in post-ESD ulcers. Further investigation of the clinical relevance is warranted.

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Section: Doppler Probe Ultrasonography Methodsmentioning

confidence: 99%

Endoscopic Doppler probe ultrasonography for detecting blood flow at post-endoscopic submucosal dissection ulcers of the stomach

et al. 2020

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“…Because DOP detects blood flow toward the probe, we hypothesized that it would be easier to detect blood flow when the vertical artery in the diverticulum collapses. Here, we report a case of CDB in which DOP was used, with new systems 5 for effective identification of SRH (Video 1, available online at www.VideoGIE.org).…”

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confidence: 99%

“…To identify the source of the bleeding, we prepared a DOP system (16 MHz; Compumedics, DWL, Germany; Fig. 2) 5 and performed colonoscopy. Although there was no sign of active bleeding, we checked the diverticula one by one using DOP (Fig.…”

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confidence: 99%

Effectiveness of endoscopic Doppler probe ultrasonography for identifying the source of colonic diverticular bleeding

2020

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Micro Non-Uniform Linear Array (MNULA) for Ultrasound Plane Wave Imaging

Tang

Cui

et al. 2021

Sensors

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Ultrasound plane wave imaging technology has been applied to more clinical situations than ever before because of its rapid imaging speed and stable imaging quality. Most transducers used in plane wave imaging are linear arrays, but their structures limit the application of plane wave imaging technology in some special clinical situations, especially in the endoscopic environment. In the endoscopic environment, the size of the linear array transducer is strictly miniaturized, and the imaging range is also limited to the near field. Meanwhile, the near field of a micro linear array has serious mutual interferences between elements, which is against the imaging quality of near field. Therefore, we propose a new structure of a micro ultrasound linear array for plane wave imaging. In this paper, a theoretical comparison is given through sound field and imaging simulations. On the basis of primary work and laboratory technology, micro uniform and non-uniform linear arrays were made and experimented with the phantom setting. We selected appropriate evaluation parameters to verify the imaging results. Finally, we concluded that the micro non-uniform linear array eliminated the artifacts better than the micro uniform linear array without the additional use of signal processing methods, especially for target points in the near-field. We believe this study provides a possible solution for plane wave imaging in cramped environments like endoscopy.

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Endoscopic Doppler probe ultrasonography for post‐endoscopic submucosal dissection ulcer: New device to show blood flow depth

Cited by 3 publications

References 5 publications

Endoscopic Doppler probe ultrasonography for detecting blood flow at post-endoscopic submucosal dissection ulcers of the stomach

Endoscopic Doppler probe ultrasonography for detecting blood flow at post-endoscopic submucosal dissection ulcers of the stomach

Effectiveness of endoscopic Doppler probe ultrasonography for identifying the source of colonic diverticular bleeding

Micro Non-Uniform Linear Array (MNULA) for Ultrasound Plane Wave Imaging

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