Surface imaging using a noncontact divergence-ratio axi-vision camera profilometer for laparoscopic and endoscopic...

Area of Science:

• Medical Imaging
• Surgical Technology
• Optical Profilometry

Background:

• Standard laparoscopic and endoscopic imaging provides only two-dimensional (2D) views, limiting surgeons' depth perception.
• Impaired depth perception in minimally invasive surgery can hinder the accurate identification of subtle anatomical features or pathologies.

Purpose of the Study:

• To develop and evaluate a non-contact, real-time depth profile imaging system for integration with standard laparoscopes.
• To assess the impact of supplementary depth information on the surgeon's ability to detect minute surface protrusions during laparoscopic procedures.

Main Methods:

• A non-contact profilometer, utilizing the divergence-ratio axi-vision camera principle, was developed to acquire surface depth data.
• The profilometer was integrated into a conventional laparoscope, ensuring minimal increase in instrument size and weight.
• The system processed 2D endoscopic images and real-time depth profile data.

Main Results:

• The integrated profilometer provided real-time depth profile images without direct surface contact.
• Laparoscopic procedures using the supplemented imaging system demonstrated a significant improvement in detecting minute surface protrusions compared to standard 2D imaging.
• The addition of the profilometer minimally impacted the laparoscope's physical dimensions and weight.

Conclusions:

• The developed depth profile imaging system effectively enhances depth perception in laparoscopic surgery.
• This technology offers a practical solution for improving the visualization and detection capabilities of minimally invasive surgical tools.
• The integration of real-time depth sensing holds potential for increasing surgical accuracy and safety.