Translational trial outcomes for capsule endoscopy test devices

Holly S. Lay, Ciaran Connor, Gerard Cummins, Vipin Seetohul, Ben F. Cox, Mihnea Turcanu, Yongqiang Qiu, Rachael McPhillips, Marc P.Y. Desmulliez, Eddie Clutton, Sandy Cochran

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    121 Downloads (Pure)

    Abstract

    Current clinical standards in the endoscopic diagnosis of gastrointestinal diseases are primarily based on the use of optical systems. Ultrasound has established diagnostic credibility in the form of endoscopic ultrasound (EUS), however it is limited to examination of the upper gastrointestinal tract (oesophagus, stomach and upper (proximal) small bowel). Access to the remainder of the small bowel is currently limited to optical capsule endoscopes and a limited number of other modalities as these capsules are restricted to visual examination of the surface or mucosa of the gut wall. Ultrasound capsule endoscopy has been proposed to integrate microultrasound imaging capabilities into the existing capsule format and extend examination capabilities beyond the mucosa. To establish the ability of high frequency ultrasound to resolve the histological structure of the gastrointestinal tract, ex vivo scans of pig and human tissue were performed. This was done using 25 and 34 MHz single element, physically focused composite transducers mechanically scanned along the tissue. Tethered prototype devices were then developed with 30 MHz physically focused polyvinylidene fluoride (PVDF) single element transducers embedded for use in initial translational trials in the small bowel of porcine subjects. B-scan images from the ex vivo model validation and the in vivo trials are presented.

    Original languageEnglish
    Title of host publication2017 IEEE International Ultrasonics Symposium (IUS)
    Place of PublicationUnited States
    PublisherIEEE
    Pages1-4
    Number of pages4
    ISBN (Electronic)9781538633830
    ISBN (Print)9781538633847
    DOIs
    Publication statusPublished - 2 Nov 2017
    Event2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States
    Duration: 6 Sep 20179 Sep 2017

    Publication series

    NameIEEE International Ultrasonics Symposium
    PublisherIEEE
    ISSN (Print)1948-5719

    Conference

    Conference2017 IEEE International Ultrasonics Symposium, IUS 2017
    CountryUnited States
    CityWashington
    Period6/09/179/09/17

    Fingerprint

    capsules
    examination
    transducers
    esophagus
    stomach
    endoscopes
    swine
    vinylidene
    format
    fluorides
    prototypes
    composite materials

    Keywords

    • Animal models
    • Capsules
    • Endoscopy
    • Microultrasound
    • Porcine
    • Preclinical
    • Prototyping

    Cite this

    Lay, H. S., Connor, C., Cummins, G., Seetohul, V., Cox, B. F., Turcanu, M., ... Cochran, S. (2017). Translational trial outcomes for capsule endoscopy test devices. In 2017 IEEE International Ultrasonics Symposium (IUS) (pp. 1-4). [8091826] (IEEE International Ultrasonics Symposium). United States: IEEE. https://doi.org/10.1109/ULTSYM.2017.8091826
    Lay, Holly S. ; Connor, Ciaran ; Cummins, Gerard ; Seetohul, Vipin ; Cox, Ben F. ; Turcanu, Mihnea ; Qiu, Yongqiang ; McPhillips, Rachael ; Desmulliez, Marc P.Y. ; Clutton, Eddie ; Cochran, Sandy. / Translational trial outcomes for capsule endoscopy test devices. 2017 IEEE International Ultrasonics Symposium (IUS). United States : IEEE, 2017. pp. 1-4 (IEEE International Ultrasonics Symposium).
    @inproceedings{a189e00db2f84aa0aa3e6cb9d3ed3ab7,
    title = "Translational trial outcomes for capsule endoscopy test devices",
    abstract = "Current clinical standards in the endoscopic diagnosis of gastrointestinal diseases are primarily based on the use of optical systems. Ultrasound has established diagnostic credibility in the form of endoscopic ultrasound (EUS), however it is limited to examination of the upper gastrointestinal tract (oesophagus, stomach and upper (proximal) small bowel). Access to the remainder of the small bowel is currently limited to optical capsule endoscopes and a limited number of other modalities as these capsules are restricted to visual examination of the surface or mucosa of the gut wall. Ultrasound capsule endoscopy has been proposed to integrate microultrasound imaging capabilities into the existing capsule format and extend examination capabilities beyond the mucosa. To establish the ability of high frequency ultrasound to resolve the histological structure of the gastrointestinal tract, ex vivo scans of pig and human tissue were performed. This was done using 25 and 34 MHz single element, physically focused composite transducers mechanically scanned along the tissue. Tethered prototype devices were then developed with 30 MHz physically focused polyvinylidene fluoride (PVDF) single element transducers embedded for use in initial translational trials in the small bowel of porcine subjects. B-scan images from the ex vivo model validation and the in vivo trials are presented.",
    keywords = "Animal models, Capsules, Endoscopy, Microultrasound, Porcine, Preclinical, Prototyping",
    author = "Lay, {Holly S.} and Ciaran Connor and Gerard Cummins and Vipin Seetohul and Cox, {Ben F.} and Mihnea Turcanu and Yongqiang Qiu and Rachael McPhillips and Desmulliez, {Marc P.Y.} and Eddie Clutton and Sandy Cochran",
    note = "This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) under the grant number EP/K034537/1; EP/K034537/2 and entitled Sonopill.",
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    day = "2",
    doi = "10.1109/ULTSYM.2017.8091826",
    language = "English",
    isbn = "9781538633847",
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    Lay, HS, Connor, C, Cummins, G, Seetohul, V, Cox, BF, Turcanu, M, Qiu, Y, McPhillips, R, Desmulliez, MPY, Clutton, E & Cochran, S 2017, Translational trial outcomes for capsule endoscopy test devices. in 2017 IEEE International Ultrasonics Symposium (IUS)., 8091826, IEEE International Ultrasonics Symposium, IEEE, United States, pp. 1-4, 2017 IEEE International Ultrasonics Symposium, IUS 2017, Washington, United States, 6/09/17. https://doi.org/10.1109/ULTSYM.2017.8091826

    Translational trial outcomes for capsule endoscopy test devices. / Lay, Holly S.; Connor, Ciaran; Cummins, Gerard; Seetohul, Vipin; Cox, Ben F.; Turcanu, Mihnea; Qiu, Yongqiang; McPhillips, Rachael; Desmulliez, Marc P.Y.; Clutton, Eddie; Cochran, Sandy.

    2017 IEEE International Ultrasonics Symposium (IUS). United States : IEEE, 2017. p. 1-4 8091826 (IEEE International Ultrasonics Symposium).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    AU - Seetohul, Vipin

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    AU - Turcanu, Mihnea

    AU - Qiu, Yongqiang

    AU - McPhillips, Rachael

    AU - Desmulliez, Marc P.Y.

    AU - Clutton, Eddie

    AU - Cochran, Sandy

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    N2 - Current clinical standards in the endoscopic diagnosis of gastrointestinal diseases are primarily based on the use of optical systems. Ultrasound has established diagnostic credibility in the form of endoscopic ultrasound (EUS), however it is limited to examination of the upper gastrointestinal tract (oesophagus, stomach and upper (proximal) small bowel). Access to the remainder of the small bowel is currently limited to optical capsule endoscopes and a limited number of other modalities as these capsules are restricted to visual examination of the surface or mucosa of the gut wall. Ultrasound capsule endoscopy has been proposed to integrate microultrasound imaging capabilities into the existing capsule format and extend examination capabilities beyond the mucosa. To establish the ability of high frequency ultrasound to resolve the histological structure of the gastrointestinal tract, ex vivo scans of pig and human tissue were performed. This was done using 25 and 34 MHz single element, physically focused composite transducers mechanically scanned along the tissue. Tethered prototype devices were then developed with 30 MHz physically focused polyvinylidene fluoride (PVDF) single element transducers embedded for use in initial translational trials in the small bowel of porcine subjects. B-scan images from the ex vivo model validation and the in vivo trials are presented.

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    Lay HS, Connor C, Cummins G, Seetohul V, Cox BF, Turcanu M et al. Translational trial outcomes for capsule endoscopy test devices. In 2017 IEEE International Ultrasonics Symposium (IUS). United States: IEEE. 2017. p. 1-4. 8091826. (IEEE International Ultrasonics Symposium). https://doi.org/10.1109/ULTSYM.2017.8091826