Doppler spectrum of scatterng of pulsed focused wave beams by axial-symmetric flows
Keywords:
ultrasound, Doppler spectrum, velocity of blood flow, velocity estimation
Abstract
On the basis of the known solution for the pulsed Doppler flow-line spectrum, it is derived the general analytical expressions for the full Doppler spectra formed by axial-symmetric flows at the scattering of focused wave beams at pulsed mode. In the particular case of the poiseile flow a formula of proportionality between the average speed of the blood flow and the average frequency of the Doppler spectrum was discovered. The found form allows us to increase the accuracy of diagnostically important parameters of blood flow.
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References
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2. Фиш П. Доплеровские методы // Применение ультразвука в медицине / Под ред. Хилла К. М.: Мир, 1989. С.395-432.
3. Barannik E.A. Pulsed Doppler flow-line spectrum for focused transducers with apodized apertures // Ultrasonics. - 2001. -V.39, N2.-P.311-317.
4. Баранник Е.А. Влияние дифракционной расходимости и ширины пучков волн на спектр доплеровского сигнала // Акуст.журн.-1992. - Т. 38. N2 .-С.237-244.
5. Баранник Е.А. Локальные эффекты формирования ультразвукового доплеровского отклика биологических сред // Акуст. вісн. - 2004. - Т.7, N2. - С.3-24.2003.
6. Баранник Е.А. Ширина спектра доплеровского сигнала при импульсном режиме излучения // Акуст. журн. - 1993. -39, N5. -С.939-941.
7. Баранник Е.А. Влияние фокусирования ультразвуковых волн на дисперсию доплеровского спектра // Акуст. Журн. -1994 - Т.40, N 2 .- С.212-214.
Published
2005-06-06
Cited
How to Cite
Barannik, E., & Skresanova, I. (2005). Doppler spectrum of scatterng of pulsed focused wave beams by axial-symmetric flows. Biophysical Bulletin, 2(16), 80-85. Retrieved from https://periodicals.karazin.ua/biophysvisnyk/article/view/17853
Section
Medical physics
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