+ Translate

Spectral analysis of Doppler velocity patterns in normals and patients with carotid artery stenosis

, : Spectral analysis of Doppler velocity patterns in normals and patients with carotid artery stenosis. Clinical Physiology 1(4): 365-374

A computerized pattern recognition program was utilized to assess the predictive ability of various parameters obtained from the spectra of ultrasonic pulsed Doppler signals from the carotid arteries. The most accurate features selected by linear regression analysis were the natural log (ln) of the ratio of the mean velocity in the internal carotid artery compared to that in the common carotid artery, and the ln of the maximum velocity, the ln of the maximum frequency, and the square of the fractional broadening term, all of which were measured at peak systole in the internal carotid artery. Using the combination of the velocity ratio and the fractional broadening term, the average difference in the estimated percentage stenosis, as compared to that obtained by arteriography, was 12.8%.

(PDF 0-2 workdays service)

Accession: 044375089

PMID: 7199408

Submit PDF Full Text: Here

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Related references

Arbeille P.; Lapierre F.; Patat F.; Benhamou A.C.; Alison D.; Dusorbier C.; Pourcelot L., 1984: Assessment of carotid artery stenosis by spectral analysis of the doppler signal comparison of the results of spectral analysis angiography and anatomo pathology. With the single Doppler spectrum analysis, one can appreciate the degree of the carotid stenosis according to the importance of the hemodynamic disturbances induced by the stenosis. The possibilities and limitations of this method are discussed. S...

Ulgen, M.S.; Bilici, A.; Acar, M.; Toprak, N., 2001: The relationship of coronary artery disease and carotid Doppler flow velocity and resistance index in patients with no significant carotid stenosis. Angiology 52(6): 433-434

Benetos, A.; Simon, A.; Levenson, J.; Lagneau, P.; Bouthier, J.; Safar, M., 1985: Pulsed Doppler: an evaluation of diameter, blood velocity and blood flow of the common carotid artery in patients with isolated unilateral stenosis of the internal carotid artery. Arterial diameter, blood velocity and blood flow of both common carotid arteries were studied in 24 patients with isolated unilateral internal carotid artery stenosis, without any other significant lesion of the carotid system. The methodology use...

Spencer M.P.; Reid J.M., 1978: Quantification of carotid artery stenosis from spectral analysis of doppler audio signals. Federation Proceedings 37(3): 734

Popa, V.N.; Spencer, M.P.; Lion, C.L.; Felberg, R.A., 2007: Power M-Mode Doppler and single-gate spectral analysis using a 2-MHz pulsed-wave Doppler transducer to directly detect cervical internal carotid artery stenosis: use of the continuity principle: report of a novel technique. Background and Purpose - We hypothesized that direct cervical investigation with Power M- Mode Doppler ( PMD) combined with single- gate Doppler spectral analysis ( SGDSA) using a 2- MHz pulsed- wave Doppler transducer would show reasonable accur...

Spence, J.D., 1994: Effects of antihypertensive drugs on flow disturbances: nifedipine, captopril, and metoprolol evaluated by quantitative spectral analysis of Doppler flow patterns in patients with carotid stenosis. Hemodynamic theories of atherogenesis suggest that flow disturbances (departures from laminar flow including high and low shear) and increases in heart rate may be important in the initiation, progression, and complications of atherosclerosis such...

Keagy B.A.; Pharr W.F.; Thomas D.; Bowes D.E., 1982: A quantitative method for the evaluation of spectral analysis patterns in carotid artery stenosis. Duplex scanning in conjunction with Fast Fourier Transform Spectral Analysis offers a means of identifying stenotic internal carotid arteries, but few quantitative algorithms for interpretation of the spectral analysis patterns have been described...

Soulez, G.; Therasse, E.; Robillard, P.; Fontaine, A.; Denbow, N.; Bourgouin, P.; Oliva, V.L., 1999: The value of internal carotid systolic velocity ratio for assessing carotid artery stenosis with Doppler sonography. The purpose of this study was to assess the value of the ratio between the internal carotid systolic velocity (ICSV) at the carotid bulb and the distal internal carotid systolic velocity (DICSV) for the detection of carotid artery stenosis. Two hu...

Logason, K.; Karacagil, S.; Ulus, A.Tulga.; Hårdemark, H-Göran., 2002: The impact of different spectral Doppler criteria on the proportion of high-grade internal carotid artery stenosis in patients undergoing duplex scanning. Aim: To investigate the impact of different spectral Doppler criteria on the proportion of high-grade ICA stenosis in patients undergoing carotid artery duplex scanning. Material and methods: Duplex scans of 4,548 internal carotid arteries (ICA) i...

Sakamoto, Y.; Sato, K.; Kobayashi, J.; Koga, M.; Nagatsuka, K.; Minematsu, K.; Toyoda, K., 2016: Peak Systolic Velocity Measured by Continuous-Wave Doppler Ultrasonography without Angle Correction in Patients with Internal Carotid Artery Stenosis. Peak systolic velocity (PSV) is measured with pulse-wave (PW) Doppler with angle correction in patients with internal carotid artery stenosis (ICAS). However, the correlation between conventional angiography and PSV shows considerable scattering....