We investigated the influence of scattering particles concentration on the decorrelation of ultrasound signals for urinary flow imaging in a urethra model. A flexible urethra model made from PolyVinyl Alcohol (PVA) was perfused at flow rate of 10 ml/s with five diluted urine solutions prepared from morning urine samples of 4 healthy volunteers and seven aqueous solutions containing silica gel as scattering particles. During flow, ten ultrasound RadioFrequency (RF) data sets were acquired for each solution at a pulse repetition frequency of 5 kHz. Correlation coefficients between each two sequential RF-data sets were calculated as a function of particle concentration. The results depict that average correlation increases with an increase in particle concentration. The curves derived from the urine samples of the volunteers displayed a behavior similar to that of the silica particle aqueous solutions. Therefore, we conclude that urinary flow imaging using the decorrelation method in patients might be feasible.

Bladder outlet obstruction style, Decorrelation, Urine particle concentration
dx.doi.org/10.1109/ULTSYM.2014.0465, hdl.handle.net/1765/82538
2014 IEEE International Ultrasonics Symposium, IUS 2014
Department of Urology

Arif, M, van Mastrigt, R, Idzenga, T, & de Korte, C.L. (2014). Dependence of ultrasound decorrelation on urine scatter particle concentration. Presented at the 2014 IEEE International Ultrasonics Symposium, IUS 2014. doi:10.1109/ULTSYM.2014.0465