Integrated Front End Circuitry for Microultrasound Capsule Endoscopy

Holly S. Lay, Christina Lemke, Benjamin F. Cox, Yongqiang Qiu, Gerard Cummins, Elena Ferrazzano, Calum West, Marc P.Y. Desmulliez, R. Eddie Clutton, Sandy Cochran

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1 Citation (Scopus)
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Video capsule endoscopy (VCE) was originally developed to address the limitation of conventional endoscopy in accessing the small bowel as a remote part of the gastrointestinal tract. To further enhance the diagnostic ability of VCE, microultrasound capsule endoscopy is under development for identification of disease at an earlier stage and visualisation of subsurface tissue features. This paper presents an evaluation of two approaches to improve signal to noise ratio (SNR) in rapid prototyped capsule endoscopes. First, noise reduction techniques are applied to the integrated front-end circuits in the prototype capsules. Secondly, multiple types of coded excitation transmission are tested and benchmarked with respect to non-coded transmission. Results are presented for both bench top phantom imaging and in vivo translational trial imaging.

Original languageEnglish
Article number8579738
JournalIEEE International Ultrasonics Symposium, IUS
Publication statusPublished - 22 Oct 2018
Event2018 IEEE International Ultrasonics Symposium, IUS 2018 - Kobe, Japan
Duration: 22 Oct 201825 Oct 2018


  • capsule endoscopy
  • coded excitation
  • front-end electronics
  • microultrasound
  • pulse compression

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