A new three-dimensional automatic bodymarker system for transvaginal ultrasonography

Area of Science:

• Medical Imaging
• Biomedical Engineering

Background:

• Transvaginal ultrasonography requires precise probe positioning for accurate diagnosis.
• Existing methods for tracking probe position can be time-consuming and less accurate.

Purpose of the Study:

• To assess the accuracy and clinical utility of a novel 3D automatic bodymarker system for transvaginal ultrasound.
• To evaluate the system's ability to display real-time probe position and orientation.

Main Methods:

• Developed an electromagnetic field-based bodymarker system to track probe position.
• Integrated positional data with ultrasound images on a PC, displaying a 3D graphic model.
• Measured positional and angular errors and evaluated system performance in healthy volunteers.

Main Results:

• The system accurately displayed probe position (1.0 mm median error) and angles (0.7 degrees median error).
• Demonstrated effective performance in healthy female volunteers.
• Reduced calibration time to 5.0 seconds compared to 7.6 seconds for conventional methods.

Conclusions:

• The 3D automatic transvaginal bodymarker system offers precise probe tracking and angle indication.
• The system is effective in clinical settings and accelerates examination times.
• This technology holds potential clinical value for transvaginal ultrasound procedures.