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Parameter mapping for the detection of disturbed blood flow
K W Ferrara1, M Ostromogilsky, S Rosenberg
1Riverside Research Institute, New York, NY 10036, USA.
Ultrasound in Medicine & Biology
|January 1, 1995
Summary
Detecting minor stenoses in color flow mapping is challenging. This study introduces a normalized signal correlation parameter to spatially map velocity and shear rate changes, improving flow disturbance localization.
Area of Science:
- Medical Imaging
- Fluid Dynamics
- Ultrasound Technology
Background:
- Color flow mapping struggles with detecting minor stenoses.
- Accurate spatial mapping of velocity and shear rate is crucial for identifying flow disturbances.
Purpose of the Study:
- To develop and evaluate novel methods for improved stenosis detection in color flow mapping.
- To spatially map changes in velocity and shear rate to pinpoint flow disturbance origins.
Main Methods:
- Introduction and evaluation of two signal correlation magnitude indicators.
- Development of a normalized parameter proportional to signal correlation magnitude over multiple pulses.
- Comparison of the normalized parameter against a single-lag correlation measure.
Main Results:
- The normalized parameter effectively aids in the spatial mapping of velocity and shear rate.
- Demonstrated capability in identifying sources of flow disturbance.
Conclusions:
- The proposed normalized signal correlation parameter enhances the detection of minor stenoses.
- This method offers improved spatial mapping for velocity and shear rate analysis in flow studies.