Nothing Special   »   [go: up one dir, main page]

Wang et al., 2014 - Google Patents

Thermally enhanced signal strength and SNR improvement of photoacoustic radar module

Wang et al., 2014

View HTML
Document ID
8442812789882821989
Author
Wang W
Mandelis A
Publication year
Publication venue
Biomedical Optics Express

External Links

Snippet

A thermally enhanced method for improving photoacoustic imaging depth and signal-to- noise (SNR) ratio is presented in this paper. Experimental results showed that the maximum imaging depth increased by 20% through raising the temperature of absorbing biotissues …
Continue reading at opg.optica.org (HTML) (other versions)

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering
    • G01N2021/653—Coherent methods [CARS]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/0093—Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy
    • A61B5/0095—Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy by applying light and detecting acoustic waves, i.e. photoacoustic measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infra-red light
    • G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infra-red light using far infra-red light; using Terahertz radiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/636—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited using an arrangement of pump beam and probe beam; using the measurement of optical non-linear properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/0059—Detecting, measuring or recording for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Detecting, measuring or recording for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0091—Detecting, measuring or recording for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for mammography

Similar Documents

Publication Publication Date Title
Tromberg et al. Properties of photon density waves in multiple-scattering media
Guo et al. Calibration-free absolute quantification of optical absorption coefficients using acoustic spectra in 3D photoacoustic microscopy of biological tissue
Yao et al. Absolute photoacoustic thermometry in deep tissue
Maneas et al. Gel wax-based tissue-mimicking phantoms for multispectral photoacoustic imaging
Ku et al. Deeply penetrating photoacoustic tomography in biological tissues enhanced with an optical contrast agent
Yin et al. Tomographic imaging of absolute optical absorption coefficient in turbid media using combined photoacoustic and diffusing light measurements
Cook et al. Tissue-mimicking phantoms for photoacoustic and ultrasonic imaging
Schmitt et al. Interference of diffusive light waves
Yuan et al. Simultaneous reconstruction of acoustic and optical properties of heterogeneous media by quantitative photoacoustic tomography
Laufer et al. Quantitative determination of chromophore concentrations from 2D photoacoustic images using a nonlinear model-based inversion scheme
Tian et al. Imaging and sensing based on dual-pulse nonlinear photoacoustic contrast: a preliminary study on fatty liver
Razansky et al. Sensitivity of molecular target detection by multispectral optoacoustic tomography (MSOT)
Gao et al. Viscoelasticity imaging of biological tissues with phase-resolved photoacoustic measurement
Hussain et al. Quantitative blood oxygen saturation imaging using combined photoacoustics and acousto-optics
Pham et al. Quantifying the properties of two-layer turbid media with frequency-domain diffuse reflectance
Petschke et al. Comparison of intensity-modulated continuous-wave lasers with a chirped modulation frequency to pulsed lasers for photoacoustic imaging applications
Qu et al. Dichroism-sensitive photoacoustic computed tomography
Sheinfeld et al. Photoacoustic Doppler measurement of flow using tone burst excitation
Kaiplavil et al. Photothermal tomography for the functional and structural evaluation, and early mineral loss monitoring in bones
Liu et al. Multi-spectral photoacoustic elasticity tomography
Upputuri et al. Real-time monitoring of temperature using a pulsed laser-diode-based photoacoustic system
Wang et al. Saturation effect in functional photoacoustic imaging
Gao et al. Quantitative imaging of microvasculature in deep tissue with a spectrum-based photo-acoustic microscopy
Walther et al. Analysis of the potential for non-invasive imaging of oxygenation at heart depth, using ultrasound optical tomography (UOT) or photo-acoustic tomography (PAT)
Xu et al. Photorefractive detection of tissue optical and mechanical properties by ultrasound modulated optical tomography