Projects per year
Wireless capsule endoscopy has opened a new era by enabling remote diagnostic assessment of the gastrointestinal tract in a painless procedure. Video capsule endoscopy is currently commercially available worldwide. However, it is limited to visualization of superficial tissue. Ultrasound (US) imaging is a complementary solution as it is capable of acquiring transmural information from the tissue wall. This paper presents a mechanical scanning device incorporating a high-frequency transducer specifically as a proof of concept for US capsule endoscopy (USCE), providing information that may usefully assist future research. A rotary solenoid-coil-based motor was employed to rotate the US transducer with sectional electronic control. A set of gears was used to convert the sectional rotation to circular rotation. A single-element focused US transducer with 39-MHz center frequency was used for high-resolution US imaging, connected to an imaging platform for pulse generation and image processing. Key parameters of US imaging for USCE applications were evaluated. Wire phantom imaging and tissue phantom imaging have been conducted to evaluate the performance of the proposed method. A porcine small intestine specimen was also used for imaging evaluation in vitro. Test results demonstrate that the proposed device and rotation mechanism are able to offer good image resolution ( ∼ 60μ text-m ) of the lumen wall, and they, therefore, offer a viable basis for the fabrication of a USCE device.
- Capsule endoscopy
- high-FREQUENCY ultrasound
- imaging of GI tract
- mechanical scanning device
- ultrasound capsule endoscopy
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Computer Science Applications
- Electrical and Electronic Engineering
FingerprintDive into the research topics of 'Development of a mechanical scanning device with high-frequency ultrasound transducer for ultrasonic capsule endoscopy'. Together they form a unique fingerprint.
- 1 Finished
Sonopill: Minimally Invasive Gastrointestinal Diagnosis and Therapy (Joint with University of Glasgow & Heriot Watt University)
27/05/13 → 14/12/18