Needle Puncture Detection Using Vibroacoustic Sensing in Layered Phantoms

Key Points

• The study aims to assess the effectiveness of vibroacoustic sensing for detecting changes during needle insertions into layered materials.
• Conducted experiments with layered synthetic phantoms made of foams with varying pore densities and internal cavities.
• Performed time-domain and wavelet analyses to capture vibrational events during needle insertions.
• Compared vibrational signals from different foam densities and configurations.
• Denser foams produced more frequent vibrational events compared to less dense foams.
• High-frequency activity was observed after elastic membrane rupture, but absent during cavity insertions.
• Differences in time-frequency patterns suggest variations in mechanical responses depending on foam configuration.