To access the full text documents, please follow this link: http://hdl.handle.net/2117/21545

Uncertainty factors in time-interval measurements in ballistocardiography
Gómez Clapers, Joan; Serra Rocamora, Albert; Casanella Alonso, Ramón; Pallàs Areny, Ramon
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. GRUP ISI - Grup d´Instrumentació, sensors i interfícies
There is a growing interest on measuring time intervals between the J peak of the ballistocardiogram (BCG) and several features of other cardiovascular signals such as the ECG in order to obtain cardiovascular function markers. Nevertheless, possible uncertainty factors involved in these measurements have not been identified and analyzed, which is a necessary step to advance towards standardization in this reemerging biomedical engineering field. In this paper we analyze the effect of the low-pass cutoff frequency and phase characteristic of filters, noise and power line interference on J-peak time measurement. We conclude that BCG acquisition systems require a minimum low-pass cutoff frequency of 25 Hz but the phase angle of filters at this frequency introduce more than 6 ms delay that increases with increasing filter order. Further, SNR and power line interference levels respectively below about 25 dB and 30 dB, commonly found in data acquisition systems in this area, may lead to uncertainties in the time position of the J peak of tens of milliseconds, which are comparable to measured time interval changes that may have diagnostic interest.
Àrees temàtiques de la UPC::Ciències de la salut::Medicina
Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura
Ballistocardiography
Cor -- Batecs -- Mesurament
Bal·listocardiografia
info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
         

Show full item record

Related documents

Other documents of the same author

Gómez Clapers, Joan; Serra Rocamora, Albert; Casanella Alonso, Ramón; Pallàs Areny, Ramon
Gilaberte Elvira, Sonia; Gómez Clapers, Joan; Casanella Alonso, Ramón; Pallàs Areny, Ramon
Gómez Clapers, Joan; Casanella Alonso, Ramón; Pallàs Areny, Ramon
Gómez Clapers, Joan; Casanella Alonso, Ramón; Pallàs Areny, Ramon
Gómez Clapers, Joan; Casanella Alonso, Ramón; Pallàs Areny, Ramon
 

Coordination

 

Supporters