Application of Linear Gradient Magnetic Field in Arterial Profile Scanning Imaging.

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Electromagnetism

Background:

• Cardiovascular and cerebrovascular diseases are leading causes of death, often linked to arterial stenosis and sclerosis.
• Current diagnostic methods are costly and complex, hindering early disease prediction and monitoring.
• A novel, non-invasive electromagnetic imaging approach is needed for early arterial disease detection.

Purpose of the Study:

• To investigate the coupling effect between arterial blood flow and a linear gradient magnetic field.
• To develop a method for reconstructing arterial profiles for enhanced imaging.
• To lay the theoretical groundwork for new electromagnetic artery scanning technology.

Main Methods:

• Utilized a combination coil to generate a linearly gradient magnetic field with a scanning zero-magnetic-field line.
• Detected voltage signals on the body surface based on the magnetoelectric effect of blood flow.
• Employed the reciprocity theorem integral equation to derive a numerical model for arterial radius reconstruction.
• Validated the method through finite element analysis simulations in COMSOL.

Main Results:

• Achieved 90% numerical accuracy and 1mm spatial resolution in arterial profile reconstruction.
• Demonstrated real-time imaging capability with a single scanning time of 0.005 seconds at 100 Hz.
• Simulation results verified the effectiveness of the proposed method for arterial imaging.

Conclusions:

• Linear gradient magnetic fields show potential for arterial profile imaging.
• The proposed method offers advantages in imaging speed and resolution over traditional techniques.
• Further clinical validation is required to confirm the application of this technology in early arterial disease detection.