Programmable Test Bench for Hemodynamic Studies

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Pereira, HC (Author) Other; Cardoso, JM (Author) Other; Almeida, VG (Author) Other; Pereira, T (Author) Other; Borges, E (Author) Other; Figueiras, E (Author) Other; Ferreira, LR (Author) Other; Simoes, JB (Author) Other; Correia, C (Author) Other

Conference proceedings International

Title: WORLD CONGRESS ON MEDICAL PHYSICS AND BIOMEDICAL ENGINEERING, VOL 25, PT 4: IMAGE PROCESSING, BIOSIGNAL PROCESSING, MODELLING AND SIMULATION, BIOMECHANICS

Pages: 1460-1463

World Congress on Medical Physics and Biomedical Engineering

Munich, GERMANY, SEP 07-12, 2009

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 9 Citations

Other information

Authenticus ID: P-003-D4C

DOI: 10.1007/978-3-642-03882-2-387

Abstract (EN): The non-invasive assessment of hemodynamic parameters has been a permanent challenge posed to the scientific community. The literature shows many contributions to this quest expressed as algorithms dedicated to revealing some of its characteristics and as new probes or electronics, featuring some enhanced instrumental capability that can improve their insight. A test system capable of replicating some of the basic properties of the cardiovascular system, especially the ones related with the propagation of the arterial pressure wave (APW), is a powerful tool in the development of those probes and in the validation of the various algorithms that extract clinically relevant information from the data that they can collect. This work describes a test bench system, based on the combination of a new programmable pressure wave generator with a flexible tube, capable of emulating some of these properties. It discusses its main characterization issues and demonstrates the system in a relevant case study. Two versions of the system have been set up: one that generates a short duration pulse-like pressure wave from an actuator operated in a switched mode, appropriate to system characterization; a second one, using a long stroke actuator, linearly operated under program control, capable of generating complex, including cardiac-like, pressure waveforms. This configuration finds its main use in algorithm test and validation. Tests with a new piezoelectric probe, designed to collect the APW at the major artery sites are shown, demonstrating the possibility of non-invasive precise recovery of the pressure waveform.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4