THANK YOU FOR SUBSCRIBING
Recent advances in biophotonics have made it possible to discriminate malignant tissues from normal tissues and cancer stages by integrating artificial intelligence and photonic technology. Endoscopy-assisted surgery, photoablation, photothermal ablation, plasma-induced laser ablation, and photo-disruption are some emerging biophotonic cancer therapies being investigated.
Fremont, CA: Photonics is the scientific study of light wave generation, detection, and manipulation. Photonic-based techniques have significantly benefited public health by creating quick, affordable, and individualized solutions. These approaches have many advantages because light waves may pass through various biological barriers without creating undesired interactions, combined with the fast speed at which optical photons move.
Photonics in Healthcare
Stay ahead of the industry with exclusive feature stories on the top companies, expert insights and the latest news delivered straight to your inbox. Subscribe today.
When light or electromagnetic radiation interacts with biological components or living things, it is called biophotonics or photonics technology in healthcare. Light energy or wavelengths and cell optical characteristics are the main determinants of this interaction. The distribution of the internal refractive index determines the cell's optical characteristics.
The electromagnetic spectrum encompasses all wavelengths of light. The body is transparent to both short-wavelength, high-energy gamma rays (X-rays) and long-wavelength, low-energy radio waves, which allows for noninvasive imaging of internal organs and bones.
In contrast, living tissues absorb significant infrared and ultraviolet energy. This characteristic makes laser lights with infrared/ultraviolet wavelengths useful for various biomedical procedures, including sealing wounds, heating or vaporizing particular tissue areas, and making tissue incisions.
Several bioactive macromolecules in the visible portion of the electromagnetic spectrum have the innate ability to absorb particular light energy or wavelengths. By measuring the amount of energy absorbed, one can assess an organ's physiological state.
Non-absorbing macromolecules can be marked with specifically designed dyes or biomarkers that use visible light to highlight particular cell types, such as cancer cells.
Photonics in Disease Diagnosis
In the past twenty years, photonics technologies have been applied to the fast, sensitive, and specific detection of pathogens, metabolites and metabolic biomarkers, disease-specific alterations in the composition of cells and tissues, and bodily fluids.
Modern optical imaging techniques use a laser to send light into a tissue and optics or electro-optical sensors to measure light diffraction, refraction, scattering, and absorption by the tissue.
Various optical imaging approaches are commonly employed in clinical settings to detect both microscopic and macroscopic cancers. The most common optical imaging techniques include endoscopy, optical coherence tomography (OCT), microscopy, and spectroscopy. Various multimodal methods that integrate all of these technologies are also gaining popularity. While morphological imaging examines structural changes caused by a disease, functional imaging concentrates on metabolism, cellular composition, and blood flow abnormalities. Similarly, molecular imaging evaluates cellular and molecular processes in live organisms.
In ophthalmology, OCT is the gold standard for producing high-resolution three-dimensional retina pictures. The procedure is frequently used to identify morphological changes in the eye and prevent disorders such as glaucoma and macular degeneration.
Fluorescence endoscopy has recently advanced, allowing for the detection and differentiation of tiny tumors with a diameter of 1 mm from healthy tissues. Several fluorescent probes, including peptide and nanoparticulate probes, have been created for early-stage cancer diagnosis due to their excellent specificity in binding to recognized tumor indicators. Label-free approaches, including autofluorescence and Raman spectroscopy, have also been developed to avoid the high cost of developing fluorescent probes.
More in News