Researchers have developed an ultra-thin, flexible microimager capable of capturing detailed brain activity, with potential applications in early disease detection and minimally invasive medical procedures. The device, thinner than an eyelash at just 7 microns thick, was created by a team led by Carnegie Mellon University’s Maysam Chamanzar and described in the journal Biomedical Optics Express.
The microimager leverages a biocompatible polymer called Parylene, which forms photonic components like waveguides to deliver and detect light. Each waveguide is equipped with micromirrors that relay light to an image sensor, enabling high-resolution imaging of tissues. Unlike bulky traditional endoscopes, this compact device can reach deep into the body with minimal tissue damage.
In tests, the device successfully imaged fluorescent microspheres in a scattering medium and captured structural and functional activity in mouse brain tissue. It also correlated neural activity with electrophysiology data, validating its accuracy. According to Chamanzar, the technology could eventually link neural activity to specific cell types’ genetic profiles.
The researchers aim to integrate light sources and sensors for standalone use in surgical or diagnostic settings. Potential applications include:
- Guiding surgeons with real-time feedback during procedures.
- Monitoring cancer cells post-tumor removal.
- Imaging blood vessels or the gastrointestinal tract via catheters.
This breakthrough in miniaturized imaging holds promise for advancing medical diagnostics and treatment. With further development, the microimager could transform how diseases are detected and managed, offering precise, less invasive options for patients worldwide.
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