Lastly, devices that utilize reflectance spectroscopy such as the Identafi and Narrow Band Imaging (NBI) from Olympus Medical Systems can enhance the underlying vasculature in the mucosa and...

Spectroscopy

postato da lilyeven12 il 28/06/2018
Categoria: Fumetti e Cartoni Animati - tags: tooth scaler australia

Lastly, devices that utilize reflectance spectroscopy such as the Identafi and Narrow Band Imaging (NBI) from Olympus Medical Systems can enhance the underlying vasculature in the mucosa and provide additional information regarding the vascular or inflammatory nature of the lesion in question. How Do I Know If My Loved One Needs Help? for more information.For example, NBI is an endoscopic optical imaging enhancement technology that improves the contrast of the mucosal surface texture and mucosal and submucosal vasculature. Utilizing the principle that different wavelengths of light will penetrate at different depths, the technology filters white light to emit a pair of 30-nm narrow bands of blue and green light simultaneously. The blue light centred at 415 nm corresponds to the main peak absorption spectrum of haemoglobin and penetrates the superficial mucosal layer, whereas blood vessels in the deeper mucosal and submucosal layers are visible due to the deeper penetration of the green light centred at 540 nm. NBI is restricted to specialist and tertiary referral centers primarily due to the level of training required, high cost, large size, and limited portable capacity of the NBI equipment. In contrast, Identafi is the only handheld intra-oral commercially available device that can provide additional information garnered from reflectance spectroscopy utilizing a green-amber light at 545 nm. Identafi is a multispectral screening device that incorporates 3 different lights that are designed to be used in a sequential manner to facilitate intraoral examination. In addition to an LED white light, Identafi includes violet and green-amber lights to induce direct tissue fluorescence and tissue reflectance, respectively. By integrating tissue fluorescence and tissue reflectance into one tool, Identafi aims to be an easy-to-use device maximizing the advantages of both white light examination and tissue fluorescence Dental Chair. When using this device, it is essential that the clinician follow the manufacturer’s light sequence of white, violet, and green-amber to avoid false positive findings and to sequentially add clinical value to the oral examination by assessing color, texture, and ulceration under white light, loss of autoflorescence and diascopy under blue/violet light, and then the vascular and inflammatory nature of the lesion under green-amber light. By doing this, clinicians will either include or exclude various abnormalities or pathologies in their differential diagnosis list and then consider the findings of all the lights collectively. Clinicians should remember to always interpret the clinical and optical findings as a whole and not in isolation. Optical adjuncts are effective in assisting with the detection of oral mucosal abnormalities, though further research is required to evaluate the usefulness of these devices in differentiating benign lesions from potentially malignant and malignant lesions tooth scaler australia