Investigation of self-adaptive LED surgical lighting based on entropy contrast enhancing method

A Portable System for On-Site Medical Spectral Imaging: Pre-Clinical Development and Early Evaluation

“…Image contrast enhancement, based on spectral information and optimized spectral distribution (SPD), in particular [9], has been previously studied under optimal and conventional illumination [11], however, such illumination is unoptimized and thus, unsuitable for contrast enhancement. Contrary to prior practice, we propose computed illumination optimized for diverse features and tissues as an alternative to the commonly employed broadband light since the computed illumination has potentials to simplify in vivo examinations through enhanced image quality [12,13].…”

Does correlated color temperature affect the ability of humans to identify veins?

“…The sub--experiment on the reference hand is crucial for checking the hypothesis that regardless of the uniqueness of a person's eyes there was one universal CCT among the seven options that allowed optimal identification of veins for a vast majority of observers. It must be mentioned here that the same CCT could be achieved with various spectral power distributions [18], not all of them allowing such high color rendering index, and it would be interesting (in the future) to see what effect the specific spectral power distribution has on the vein identification ability. On the other hand, the sub--experiment on the observer's hand was of vital importance for testing the hypothesis that irrespective of variations in skin pigmentation, vein pattern etc.…”

“…The environmentally friendly footprint of LEDs accompanied by the flexibility to design special spectral power distributions [7,8] and illumination levels make LED lighting systems the perfect candidate for hospital lighting [9][10][11]. Visual examination is the initial tool used by clinical doctors in all classes of medical diagnostics such as autotransplantation [12], subcutaneous and venous injections, venous cannulation [13][14][15], dental cleaning and diagnostics [16,17], and open surgery [18]. Several medical imaging techniques (photoacoustic imaging, fluorescent imaging, Raman imaging, multiphoton imaging and optical coherence tomography) and instruments (endoscopes and microscopes) have emerged recently offering "extended vision" to surgeons and medical doctors [19][20][21][22][23].…”

Precise Dimming and Color Control of LED Systems Based on Color Mixing

“…Recent breakthroughs in LED technology enable LEDs to be adopted across an even wider range of practical applications including surgical lighting systems (SLS), photolithography room lighting, and anti-glare downlight for optimal indoor lighting systems [13]- [18].…”