Needle-compatible miniaturized optoelectronic sensor for pancreatic cancer detection

Area of Science:

• Biomedical Engineering
• Optical Sensing
• Gastroenterology

Background:

• Pancreatic cancer has a poor prognosis with a 5-year survival rate below 10%.
• Current diagnostic methods like endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) rely on time-consuming cytology and are prone to sampling errors.
• Objective, real-time tissue evaluation is needed to improve pancreatic cancer diagnosis.

Purpose of the Study:

• To design and engineer a miniaturized optoelectronic sensor for in situ, real-time, and objective evaluation of human pancreatic tissues during EUS-FNA.
• To assess the feasibility and performance of this novel sensor technology.

Main Methods:

• A proof-of-concept prototype sensor was constructed using microsized optoelectronic chips and microfabrication techniques.
• The sensor was designed for compatibility with a standard 19-gauge hollow needle used in EUS-FNA.
• Multisite tissue optical sensing was performed using the fabricated sensor.

Main Results:

• Bench-top verification and pilot validation on human pancreatic tissues demonstrated comparable performance to previous fiber-based systems.
• The miniaturized sensor successfully performed optical sensing within a confined needle channel.
• The flexible design allows for various light-based sensing techniques.

Conclusions:

• The developed miniaturized optoelectronic sensor offers a promising tool for real-time, objective assessment of pancreatic tissues during EUS-FNA.
• This technology has the potential to overcome limitations of current diagnostic methods, improving the accuracy and efficiency of pancreatic cancer diagnosis.
• Further development could integrate this sensor into endoscopic procedures for enhanced diagnostic capabilities.