Flow field mapping by multi-zone adiabatic passage excitation

Area of Science:

• Medical Imaging
• Fluid Dynamics
• Biomedical Engineering

Background:

• Accurate blood flow quantification is crucial for diagnosing and monitoring various cardiovascular conditions.
• Existing flow mapping techniques can be time-consuming or limited in their ability to capture complex flow dynamics.

Purpose of the Study:

• To present a novel, robust, and efficient method for flow field mapping using multi-zone adiabatic fast passage (AFP).
• To demonstrate the simultaneous acquisition of flow profiles at multiple locations and orientations.
• To validate the technique's accuracy against established methods and assess its in vivo feasibility.

Main Methods:

• Utilized multi-zone adiabatic fast passage (AFP) for simultaneous flow profile acquisition.
• Applied the technique to carotid bifurcation and jet phantoms for validation.
• Conducted preliminary in vivo experiments on a human volunteer.

Main Results:

• Flow profiles obtained using AFP were comparable to those from Laser Doppler Anemometry (LDA) and other flow visualization methods.
• The technique successfully mapped flow fields in complex phantom models.
• Preliminary human volunteer data indicated feasibility for in vivo flow quantification.

Conclusions:

• Multi-zone AFP offers a rapid and versatile approach for detailed flow field mapping.
• The method demonstrates high accuracy and potential for clinical applications in cardiovascular research.
• Further in vivo studies are warranted to fully establish its clinical utility.