TY - GEN
T1 - Analyzing wall thickness of artery phantoms in a noninvasive way
AU - Ramos, A.
AU - Bazan, I.
AU - Negreira, C.
AU - Brum, J.
AU - Resales, A.
AU - Gallegos, F.
PY - 2013
Y1 - 2013
N2 - Research looking for the achieving of an accurate measurement of thickness changes in thin biological walls (e.g. of blood vessels), is a promising work line in the medical area, because it would provide the bases to analyze the possibility of attaining early diagnoses of some diseases such as hypertension or atherosclerosis. But, to obtain a non-invasive estimation of these parameters on internal tissues, currently presents many difficulties that must be overcome. The use of high-frequency ultrasonic systems appears to offer a possible solution. In fact, the application of conventional ultrasonic imaging has shown this, but the spatial resolution related to this commercial option is not sufficient for a thickness evaluation with sufficient clinical significance, which would require accuracies of few microns. In this paper, some preliminary results of applying a new broadband ultrasonic procedure, recently developed by the authors for thickness measurement purposes, are analyzed for sub-millimeter layers made of materials similar (phantoms) to that of the biological tissues to be encountered into the artery walls. Two optional algorithms for estimating the power spectral density of the multi-pulse signals are assessed with some experimental echoes. Their potential resolutions and capabilities to provide accuracies around a micron are comparatively analyzed, for walls thickness estimation.
AB - Research looking for the achieving of an accurate measurement of thickness changes in thin biological walls (e.g. of blood vessels), is a promising work line in the medical area, because it would provide the bases to analyze the possibility of attaining early diagnoses of some diseases such as hypertension or atherosclerosis. But, to obtain a non-invasive estimation of these parameters on internal tissues, currently presents many difficulties that must be overcome. The use of high-frequency ultrasonic systems appears to offer a possible solution. In fact, the application of conventional ultrasonic imaging has shown this, but the spatial resolution related to this commercial option is not sufficient for a thickness evaluation with sufficient clinical significance, which would require accuracies of few microns. In this paper, some preliminary results of applying a new broadband ultrasonic procedure, recently developed by the authors for thickness measurement purposes, are analyzed for sub-millimeter layers made of materials similar (phantoms) to that of the biological tissues to be encountered into the artery walls. Two optional algorithms for estimating the power spectral density of the multi-pulse signals are assessed with some experimental echoes. Their potential resolutions and capabilities to provide accuracies around a micron are comparatively analyzed, for walls thickness estimation.
KW - High-Resolution
KW - Non-invasive Estimation
KW - Power spectral density
KW - Ultrasonic Transducers
KW - Wall Thickness
UR - http://www.scopus.com/inward/record.url?scp=84884337913&partnerID=8YFLogxK
U2 - 10.1109/PAHCE.2013.6568356
DO - 10.1109/PAHCE.2013.6568356
M3 - Contribución a la conferencia
AN - SCOPUS:84884337913
SN - 9781467362559
T3 - Pan American Health Care Exchanges, PAHCE
BT - 2013 Pan American Health Care Exchanges, PAHCE 2013 - Conference, Workshops, and Exhibits. Cooperation / Linkages
T2 - 8th Pan American Health Care Exchanges Conference, PAHCE 2013
Y2 - 29 April 2013 through 4 May 2013
ER -