Title Development and investigation of superficial human tissue phantoms for testing of ultrasonic imaging techniques /
Authors Raišutis, Renaldas ; Valiukevičienė, Skaidra ; Andrėkutė, Kristina ; Genutis, Gediminas ; Samaitis, Vykintas ; Mikolaitis, Tomas
ISBN 9788021450196
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Is Part of 11th European Conference on Non-Destructive Testing (ECNDT 2014) : October 6-10, 2014, Prague, Czech Republic : book of abstracts / European Federation for NDT Czech Society for NDT.. Brno : Brno University of Technology, 2014. p. 27.. ISBN 9788021450196
Keywords [eng] Diabetic foot ; Diabetic foot ; diabetes mellitus (DM)
Abstract [eng] The main complications of diabetes mellitus (DM) are ulcers of the foot, infections and amputation. Diabetic foot ulcers affect 15-20 % of the patients with DM. Amputation require 30-60 % of patients with foot ulcers. It was reported that callus influence the preceded ulceration for more than 82 % of the diabetic foot ulcer patients. Inflammatory changes may be observed in neighboring regions surrounding the callus when it evolves into the ulcer. In the case of early beginning of ulcer, the inflammatory changes of tissue can be estimated by ultrasonic technique. Tissue-mimicking phantoms are commonly used in the development of imaging systems and evaluation of image processing algorithms applied for recognition or extraction of suspicious regions. The purpose of this study was to develop diabetic foot lesion mimicking phantoms and investigate with an ultrasonic imaging technique. In this study, in order to mimic callus, beginning of the ulcer or open ulcer, the rubber-based model of the diabetic foot with inserted multi-layered region was developed. The multi-layered region of the phantom was developed using the sheets of silicone rubber and the Aqualene elastomer (Olympus corporation, USA). A multi-channel ultrasonic system Dasel SITAU 128 ch. (Dasel sistemas, Spain) with linear transducer array of 18.5 MHz (Imasonic, France, number of elements 128, pitch 0.25 mm) was used for ultrasonic investigation of the phantoms. For reconstruction of high resolution images the specific modes of data acquisition and post-processing, such as synthetic aperture focusing technique (SAFT) and total focusing method (TFM), were modified (optimized sharing of CPU and GPU) and applied. The developed phantom can be effectively used in development and evaluation of the ultrasonic measurement methods and image processing algorithms with the aim to perform the early stage diagnosis of the diabetic foot ulceration signs. The post-processing results obtained using SAFT, TFM and spat.
Published Brno : Brno University of Technology, 2014
Type Conference paper
Language English
Publication date 2014