SpectroscopySpectraVivoSpatiallyHyperspectralPhotoacousticAutofluorescenceFluorescenceUltrasoundSensorsCurvesPreclinicalOpticalSpeckleSpectroscopicTumorMeasurementsMeasurementPolarizationOpticsSpectral imagesLCOCTDiagnosticReflectionBloodArtificialCalibrationLightClassificationAbsorptionTechniquesDetectionPropertiesMeasureCamera
Spectroscopy11
- Diffuse Correlation Spectroscopy (DCS) is an increasingly popular non-invasive optical technique to clinically measure deep tissue blood flow, albeit at slow measurement rates of 0.5-1 Hz. (spie.org)
- The techniques of laser induced fluorescence spectroscopy and diffuse reflectance spectroscopy were employed and spectra were resolved using a charge-coupled device (CCD) spectrograph system. (ucl.ac.uk)
- The dynamics of edema and the skin of healthy volunteers were studied using spatially resolved diffuse reflectance spectroscopy (DRS) in conjunction with ultrasound (US). (bvsalud.org)
- Near infrared Spectroscopy (NIRS) and diffuse optical tomography (DOT) are spectroscopic methods that use light in the 690-nm to 850-nm range and can monitor changes in concentrations of oxygenated hemoglobin , deoxygenated hemoglobin, by using distinct absorption peaks at e.g. 850 nm and 760nm. (lu.se)
- The system was validated in vivo against complementary techniques, including white light and diffuse reflectance spectroscopy. (lu.se)
- Variasi Kualitas Dedak Padi dalam Ransum Sapi Perah dan Pendeteksian Pemalsuan Menggunakan Near Infrared Reflectance Spectroscopy (NIRS). (calibrationmodel.com)
- Diffuse reflectance spectroscopy, where a broadband source illuminates a sample and the reflected spectrum is measured, is a well-trusted method for noninvasively characterizing biological tissues. (spiedigitallibrary.org)
- 9 , 10 Reflectance mode spectroscopy has also be used to characterize other chromophores in tissue, such as bilirubin when trying to assess jaundice in neonates. (spiedigitallibrary.org)
- LCOCT will allow for recording morphological overview images in which points of interest will be subjected to extended characterization using Raman Spectroscopy (RS), AutoFluorescence Spectroscopy (AFS) and Diffuse Reflectance Spectroscopy (DRS). All three spectroscopic modalities will be implemented by an adaptation of the confocal modality of LCOCT and the coupling to a spectrometer. (univ-lorraine.fr)
- Extended-wavelength diffuse reflectance spectroscopy for a comprehensive view of blood perfusion and tissue response in human forearm skin. (lu.se)
- Spatially resolved (SR) spectroscopy provides depth sensing from a reflectance configuration by using a multiple optical fiber probe with several excitation-to-collecting fiber separations. (univ-lorraine.fr)
Spectra3
- Studies were then carried out in tissue using fibre-optic probes and changes in the fluorescence and reflectance spectra were recorded during PDT. (ucl.ac.uk)
- An approach for skin parameter determination was studied and confirmed using Monte-Carlo simulation of diffuse reflectance spectra for a three-layered system with the varying dermis and hypodermis parameters. (bvsalud.org)
- This paper presents a full end-to-end analysis of a low-cost reflectance-mode multispectral imaging system operating in the visible and near-infrared spectra. (spiedigitallibrary.org)
Vivo4
- Recently we demonstrated multi-channel diffuse speckle contrast analysis (DSCA) to monitor in-vivo relative blood flow in deep tissues noninvasively. (spie.org)
- Imaging Cherenkov emission during radiotherapy has been developed to establish real-time field verification in vivo. (aapm.org)
- To demonstrate that such spectral image data can yield meaningful optical measurements in vivo , the forearms of eight volunteers are imaged in the system. (spiedigitallibrary.org)
- The expected improvements in skin lesion diagnostic will be studied and quantified in the frame of experimental validations on optical phantoms, ex vivo skin and in clinics. (univ-lorraine.fr)
Spatially1
- Hyperspectral imaging (HSI) is an emerging spatially resolved spectral imaging modality for medical applications, especially in disease diagnosis and image-guided surgery. (univ-lorraine.fr)
Hyperspectral1
- The optical imaging system incorporates a hyperspectral (HS) camera to capture the spectral signatures for both the malignant and normal breast tissues within 400 ~ 1000 nm. (accscience.com)
Photoacoustic2
- Photoacoustic imaging provides high-resolution images containing information on the function and molecular composition of the tissue. (lu.se)
- CYBERDYNE also develops medical diagnostic devices and has recently been focusing on the development and clinical translation of its proprietary LED-based photoacoustic imaging technology. (photonics.com)
Autofluorescence1
- AutoFluorescence (AFS) and Diffuse Reflectance (DRS) spectroscopies were investigated as non-invasive diagnostic tools for skin cancers in clinics in a number of studies as they provide access to structural and functional information of interest for non invasive diagnosis and pathological evolution follow-up. (univ-lorraine.fr)
Fluorescence1
- The CCD array was also used for fluorescence imaging of photosensitisers in tissue. (ucl.ac.uk)
Ultrasound1
- 2018, Comparative assessment of texture features for the identification of cancer in ultrasound images: A review. (accscience.com)
Sensors1
- Optics Balzers provides innovative optical coatings and components, focusing on high-tech markets such as sensors and imaging, biophotonics, space and defense, lighting and projection, and industrial applications. (photonics.com)
Curves1
- This package contains 4 ground targets that each have known reflectance curves. (peauproductions.com)
Preclinical1
- To date, PA imaging has mainly been developed for measuring oxygen saturation mainly in phantoms and numerous preclinical studies in animals have exploited the oxygenated and deoxygenated hemoglobin components to characterize tumour microenvironment. (lu.se)
Optical7
- The development and validation of optical imaging methods require measurements on artificial imaging targets, known as phantoms. (lu.se)
- The purpose of this study was to use controlled tissue phantoms to establish a calibration for the relationship between Cherenkov emission and diffuse optical parameters, to correct images for inherent patient-to-patient variations. (aapm.org)
- Optical property data was taken using the Reflect RS (Modulated Imaging Inc.) which custom calibration enabled the acquisition of SFDI data from 42cm, over a 300cm² field. (aapm.org)
- followed a high-correlation inverse relationship, which forms the basis for calibrating Cherenkov images for tissue optical property variation, i.e. (aapm.org)
- Optical spectral images can be used to estimate the amount of bulk absorbers in tissues, specifically oxy- and deoxyhemoglobin, as well as scattering parameters. (spiedigitallibrary.org)
- 1 , 2 The diffuse reflectance signal is a function of the wavelength-dependent bulk optical properties of the tissue. (spiedigitallibrary.org)
- Line-field Confocal Optical Coherence Tomography OCT (LCOCT) is an emerging technique in dermatology, which combines Reflectance Confocal Microscopy and OCT advantages, i.e. high spatial resolution and appropriate penetration depth. (univ-lorraine.fr)
Speckle1
- Time averaging of speckle patterns yields the two-dimensional diffuse reflectance of the material. (harvard.edu)
Spectroscopic1
- The most well-known technique for measuring oxygen saturation is pulse oximetry that uses the physiologic activity of the cardiac pulse, in combination with the difference in spectroscopic reflectance at wavelength of 660 nm and 940 nm defining the concentration of oxyhemo and deoxyhema, to determine oxygen saturation. (lu.se)
Tumor1
- The average outcome values demonstrated that the optimal spectral bands distinguishing between the normal and the tumor tissues regarding the reflectance approach were 600 ~ 680 nm and 750 ~ 960 nm at the VIS and NIR spectrum, respectively. (accscience.com)
Measurements2
- In validation experiments, excellent agreement is observed in diffuse reflectance measurements between the spectral camera setup and a spectrometer. (spiedigitallibrary.org)
- The challenges posed by point measurements can be overcome by spectral imaging, in which images of the tissue of interest are captured at different wavelengths, resulting in a two-dimensional (2-D) array of spectral measurements. (spiedigitallibrary.org)
Measurement2
- Conclusions: This study demonstrates that measurement of the skin diffuse reflectance response at multiple distances makes it possible to determine the main parameters of the skin and will serve as the basis for the development and verification of an approach that works in a wide range of skin structure parameters. (bvsalud.org)
- Radiant Vision Systems manufactures photometric and colorimetric imaging systems that enable scientific light and color measurement as well as automated visual inspection of displays, light sources, and emerging technologies from smart devices to virtual reality headsets to automotive head-up displays. (photonics.com)
Polarization2
- This paper describes the system calibration and demodulation procedures used in an investigation of the scatter-specific tissue contrast that can be obtained by high spatial frequency (HSF) domain imaging and cross- polarization (CP) imaging using an inexpensive color imaging system. (spie.org)
- The diffuse reflectance at certain polarization angles exhibits an azimuth angle dependence, that depends on the average scattering size, a. (harvard.edu)
Optics1
- Progress in Biomedical Optics and Imaging - Proceedings of SPIE. (utmb.edu)
Spectral images1
- In three volunteers, spectral images are captured before and after inducing erythema using a warm wet towel. (spiedigitallibrary.org)
LCOCT2
- LCOCT provides a comprehensive mapping of the skin based on morphological information with image contrast arising from variations in the tissue refractive index. (univ-lorraine.fr)
- To solve this problem, functional information on the local biochemistry of skin should be collected along with LCOCT images. (univ-lorraine.fr)
Diagnostic1
- To answer the latter, non-invasive spectro-imaging techniques have been developed to provide earlier, more accurate detection of skin cancers, thus improving the diagnostic and care efficiencies. (univ-lorraine.fr)
Reflection2
- It can be captured from any angle with your camera thanks to similar total and diffuse reflection properties. (peauproductions.com)
- The system was subdivided into two exploratory (reflection/transmission) to measure the tissue's diffuse reflectance (R d ) and light transmission (T r ), respectively. (accscience.com)
Blood1
- For instance, functional magnetic resonance imaging monitors the blood oxygen level dependent (BOLD) contrast but is sensitive only to deoxygenated hemoglobin and the MRI machine is bulky. (lu.se)
Artificial1
- The national injection in spreading a rate or pathogen treatment radio satisfies normally to Enjoy the stages, dynamics, and subconjunctival academic channel that are progressive, or went to obtain artificial, badly that the compared images can find formed and ed. (plywoodskyscraper.com)
Calibration2
- en]Simply better NIR calibration models. (calibrationmodel.com)
- Calibration, image capture, and preprocessing are also discussed. (spiedigitallibrary.org)
Light1
- Particle sizing from diffuse scattered light. (harvard.edu)
Classification3
- It was demonstrated that AI models, namely classification models based on deep learning methods can achieve the accuracy of board-certified dermatologists for the classification between skin benign and malignant lesions based on dermoscopic image data. (univ-lorraine.fr)
- Texture Information-Directed Region Growing Algorithm for Image Segmentation and Region Classification, A * Weight-Selection Strategy on Training Deep Neural Networks for Imbalanced Classification, A Includes: Wong, A.K.C.[Andrew K.C.] Wong, A.K.C. Wong, A.K.C.[Andrew K. C. (visionbib.com)
- Multi-Stage Approach Combining Very High-Resolution Satellite Image, GIS Database and Post-Classification Modification Rules for Habitat Mapping in Hong Kong, A Includes: Wong, F.K.K.[Frankie Kwan Kit] Wong, F.K.K.[Frankie K. K. (visionbib.com)
Absorption2
Techniques1
- These techniques were evaluated firstly using a stable tissue phantom material containing the photosensitiser. (ucl.ac.uk)
Detection1
- The detection pattern (fiducial) is also much lower in resolution making detecting in our post processing software that much easier, even with images having high noise (typically near-infrared wavelengths). (peauproductions.com)
Properties2
- The scattering properties, which also affect the diffuse reflectance signal, can also be estimated. (spiedigitallibrary.org)
- Thanks to the target material's diffuse properties you will no longer need to worry about where the camera is orientated to get good results. (peauproductions.com)
Measure1
- AlignRT was used to measure diffuse reflectance. (aapm.org)
Camera1
- Using our MAPIR Camera Control (MCC) software you can select the photo of this target taken before your survey, the fiducial pattern will be auto-detected and the reflectance value of each target will be calculated and applied to each of your images. (peauproductions.com)