Spectral analysis of Doppler ultrasound blood flow signals from stenosed vessel in a steady flow

2010 ◽  
Author(s):  
Lifang Wang ◽  
Yaquan Huang ◽  
Yalin Tao
Keyword(s):  
Blood Flow ◽  
Spectral Analysis ◽  
Steady Flow ◽  
Doppler Ultrasound ◽  
Stenosed Vessel

Thyroid nodules: Evaluation with power Doppler and duplex Doppler ultrasound

2005 ◽  
Vol 132 (6) ◽  
pp. 874-882 ◽  
Author(s):  
Maria Cristina Chammas ◽  
Renê Gerhard ◽  
Ilka Regina Souza De Oliveira ◽  
Azzo Widman ◽  
Nestor De Barros ◽  
...  
Keyword(s):  
Blood Flow ◽  
Spectral Analysis ◽  
Doppler Ultrasound ◽  
Thyroid Nodules ◽  
Power Doppler ◽  
Multivariate Logistic Regression Analysis ◽  
Resistance Index ◽  
Needle Aspiration ◽  
Duplex Doppler Ultrasound ◽  
Duplex Doppler

This study purposes a new classification of thyroid nodules blood flow by power duplex Doppler ultrasound. A total of 177 nodules were studied with B-mode scanning, power Doppler, and spectral analysis. These data were compared with cytological results from ultrasound-guided fine-needle aspiration biopsy. Univariate and multivariate logistic regression analysis were performed. The power Doppler analysis of the nodules produced 5 vascular patterns: I, absence of signal blood flow; II, exclusively perinodular blood flow; III, perinodular > central blood flow; IV, central blood flow > perinodular blood flow; V, exclusively central blood flow. Statistical analysis revealed a significant relationship between these vascular patterns and cytological results. The spectral analysis demonstrated that the resistance index were higher in nodules with malignant versus other cytology ( P >0.001). The results indicate that power duplex Doppler facilitates screening of thyroid nodules at high risk for malignancy with elevated sensitivity (92.3%) and specificity (88%).

High-frequency doppler ultrasound examination of blood flow in the anterior segment of the eye

1998 ◽  
Vol 126 (4) ◽  
pp. 597-600 ◽  
Author(s):  
Charles J. Pavlin ◽  
Don A. Christopher ◽  
Peter N. Burns ◽  
F.Stuart Foster
Keyword(s):  
Blood Flow ◽  
Doppler Ultrasound ◽  
High Frequency ◽  
Ultrasound Examination ◽  
Anterior Segment

scholarly journals Effects of Isoflurane on Coronary Blood Flow Velocity in Young, Old and ApoE−/− Mice Measured by Doppler Ultrasound

2007 ◽  
Vol 33 (4) ◽  
pp. 512-521 ◽  
Author(s):  
Craig J. Hartley ◽  
Anilkumar K. Reddy ◽  
Sridhar Madala ◽  
Lloyd H. Michael ◽  
Mark L. Entman ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Coronary Blood Flow ◽  
Doppler Ultrasound ◽  
Blood Flow Velocity ◽  
Young Old ◽  
Coronary Blood Flow Velocity
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