Assisted-freehand ultrasound elasticity imaging

Area of Science:

• Medical imaging
• Ultrasound technology
• Biomedical engineering

Background:

• High-quality breast elasticity imaging demands precise compressions, which are difficult to achieve with freehand ultrasound.
• Existing freehand methods often suffer from motion artifacts and operator variability.

Purpose of the Study:

• To introduce and evaluate Assisted-Freehand Ultrasound (AFUSON) for improved elasticity imaging acquisition.
• To assess AFUSON's ability to enhance precision, control, and repeatability compared to freehand techniques.

Main Methods:

• Development of AFUSON, a hybrid system merging freehand flexibility with automated ultrasound capabilities.
• Implementation as a hand-held device for semi-automatic elasticity imaging acquisition.
• Quantitative comparison of AFUSON with traditional freehand methods regarding motion artifacts and repeatability.

Main Results:

• AFUSON significantly reduces out-of-plane motion decorrelation by 50% and lateral motion by 33%.
• The system increases within-scan repeatability by 50% across different operators.
• AFUSON provides enhanced acquisition precision and control compared to freehand techniques.

Conclusions:

• AFUSON offers a practical solution for acquiring high-quality breast elasticity images.
• The technology improves diagnostic accuracy by minimizing motion-related artifacts and enhancing consistency.
• AFUSON represents a valuable advancement in ultrasound-guided elasticity imaging.