SUGGESTING A NEW MODEL FOR ARTERIAL PRESSURE GRADIENT BY MEASURING THE CENTERLINE VELOITY OF ARTERY USING ULTRASONIC METHOD

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KHOUSHKAR A.; MAREFAT M.; MOKHTARI DIZAJI M.

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Journal: Pathobiology Research Year:2005 | Volume:7 | Issue:2 Page(s): 41-48

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Title

SUGGESTING A NEW MODEL FOR ARTERIAL PRESSURE GRADIENT BY MEASURING THE CENTERLINE VELOITY OF ARTERY USING ULTRASONIC METHOD

Author(s)

KHOUSHKAR A. | MAREFAT M. | MOKHTARI DIZAJI M. | Issue Writer Certificate

Keywords

BLOOD PRESSUREQ3

PRESSURE GRADIENTQ4

ULTRASOUNDQ3

CAROTID ARTERYQ3

COMPUTATIONAL MODELQ4

Abstract

Purpose: Measurements done with ultrasonic technique provide valuable information about the biomechanical system of human body. One of the applications of this technique is to measure the centerline velocity of the artery which can be proper base for determining the vessels specifications. For example, using this velocity and appropriate mathematical models of the arterial wall and blood fluid, the elastic modulus of vessels can be estimated. In this paper, a model for the estimation of PRESSURE GRADIENT has been investigated. This model introduces the arterial blood flow and back flow physically and physiologically.Materials and Methods: To obtain an equation with the same application as earlier models, but more accurate and simpler, we used the axial momentum equation based on the static pressure. In this model, we assumed that the artery centerline velocity in the z direction as one dimension. We also assumed that the radial velocity to be very less than the axial velocity (if vessel length>>radius). Then, using the continuous equation in one dimension, the model was estimated. Results: First, we recorded the artery centerline velocity by the Doppler ultrasonic measurements. Then the purposed model of the static pressure changes was tested. The results were obtained with a calculation program in which the axial and radial velocity profiles were calculated and compared to an earlier model.Conclusion: Comparison of the results obtained with the two models indicated that the suggested model provides a more accurate description of the velocity distribution and PRESSURE GRADIENT. In addition, its results had better similarities with the clinical observations and measurements. Therefore, the application of the suggested model is recommended for determining the biomechanical parameters of the artery.

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APA: Copy

KHOUSHKAR, A., MAREFAT, M., & MOKHTARI DIZAJI, M.. (2005). SUGGESTING A NEW MODEL FOR ARTERIAL PRESSURE GRADIENT BY MEASURING THE CENTERLINE VELOITY OF ARTERY USING ULTRASONIC METHOD. PATHOBIOLOGY RESEARCH (MODARES JOURNAL OF MEDICAL SCIENCES), 7(2), 41-48. SID. https://sid.ir/paper/81162/en

Vancouver: Copy

KHOUSHKAR A., MAREFAT M., MOKHTARI DIZAJI M.. SUGGESTING A NEW MODEL FOR ARTERIAL PRESSURE GRADIENT BY MEASURING THE CENTERLINE VELOITY OF ARTERY USING ULTRASONIC METHOD. PATHOBIOLOGY RESEARCH (MODARES JOURNAL OF MEDICAL SCIENCES)[Internet]. 2005;7(2):41-48. Available from: https://sid.ir/paper/81162/en

IEEE: Copy

A. KHOUSHKAR, M. MAREFAT, and M. MOKHTARI DIZAJI, “SUGGESTING A NEW MODEL FOR ARTERIAL PRESSURE GRADIENT BY MEASURING THE CENTERLINE VELOITY OF ARTERY USING ULTRASONIC METHOD,” PATHOBIOLOGY RESEARCH (MODARES JOURNAL OF MEDICAL SCIENCES), vol. 7, no. 2, pp. 41–48, 2005, [Online]. Available: https://sid.ir/paper/81162/en

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