TY - GEN
T1 - Model-based estimation of urethral resistance and elasticity using urodynamic pressure-flow data
AU - Barnea, O.
AU - Gillon, G.
PY - 1999
Y1 - 1999
N2 - A lumped parameter model of the urethra was developed to assess urethral resistance and changes in urethral elasticity during voiding using pressure and flow measurements. The model includes a pressure drop due to rapid velocity change in the constricted flow-controlling zone and urethral elasticity relating cross-sectional area with pressure. Using real pressure-flow data sets, the model was used to estimate urethral resistance and changes in urethral elasticity during voiding. Results show that it is possible to obtain resistance and estimate changes in elasticity during voiding from the pressure and flow. Estimations of elasticity show that in the normal patient relaxation of the urethra is a process that continues until end of voiding. This has important implications regarding present methods that are used in the clinic to assess urethral obstruction or constriction.
AB - A lumped parameter model of the urethra was developed to assess urethral resistance and changes in urethral elasticity during voiding using pressure and flow measurements. The model includes a pressure drop due to rapid velocity change in the constricted flow-controlling zone and urethral elasticity relating cross-sectional area with pressure. Using real pressure-flow data sets, the model was used to estimate urethral resistance and changes in urethral elasticity during voiding. Results show that it is possible to obtain resistance and estimate changes in elasticity during voiding from the pressure and flow. Estimations of elasticity show that in the normal patient relaxation of the urethra is a process that continues until end of voiding. This has important implications regarding present methods that are used in the clinic to assess urethral obstruction or constriction.
UR - http://www.scopus.com/inward/record.url?scp=0033344435&partnerID=8YFLogxK
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AN - SCOPUS:0033344435
SN - 0780356756
T3 - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
SP - 873
BT - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PB - IEEE
T2 - Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS)
Y2 - 13 October 1999 through 16 October 1999
ER -