Sentence examples for flow velocity spectrum from inspiring English sources
The aortic flow velocity spectrum was obtained by placing the sample volume of the PW mode just downstream from the aortic valve in the aortic root.
The PW mode was selected and aortic flow velocity spectrum was obtained by placing the sample volume in the aortic root just distal to the valves.
The systolic and diastolic coronary flow velocity spectrum was obtained at baseline and during the peak of hyperemia induced by i.v. adenosine (0.14 mg/kg/min during 1 minute).
Values of UT in this thin flame regime are found to be much higher than those in the TC flow, indicating that the flow velocity spectra have an effect on front propagation rates.
To develop and evaluate a phase-contrast MRI (PC-MRI) technique with hybrid one and two-sided flow-encoding and velocity spectrum separation (HOTSPA) for accelerated blood flow and velocity measurement.In the HOTSPA technique, the two-sided flow encoding (FE) is used for two FE directions and one-sided is used for the remaining FE direction.
Leading edge noise power is proportional to the square of the turbulence intensity and shows a dependency on the fifth to sixth power of the flow velocity, while the spectrum is governed by the flow resistivity and the integral length scale of the incoming turbulence.
For the trailing edge noise case, a general dependency of the sound power on the fifth power of the flow velocity was found and the frequency spectrum is controlled by the flow resistivity of the porous material.
This method represents an advance since conventional OCT angiography does not quantitatively measure either the decorrelation rate or the width of the power spectrum Previous work has used power spectrum broadening to estimate transverse flow velocity [ 25].
In this paper, we have analyzed the velocity spectrum of the Doppler flow signal to determine if it reveals differences that might contribute to the diagnosis of malignancy.
The spectrum shows how the flow velocity and direction of blood cells, present in the Doppler sample volume, vary with time.
