System and method for noninvasively monitoring conditions of a subject
First Claim
1. A probe device for use in noninvasive monitoring of at least one parameter of a region of interest in a subject'"'"'s body, the probe device comprising a support structure and a control unit wherein:
- said support structure configured to be put in contact with the body part, the support structure comprising;
at least one acoustic output port associated with an acoustic unit andan arrangement of light ports comprising light input and output ports associated with respectively a detection assembly and an illumination assembly, said arrangement of light ports comprising at least one light output port located within an aperture of the acoustic unit, and a plurality of the light input ports located around said at least one light output port, wherein location of said light output and input ports is interchangeable, said arrangement of the light ports thereby defining pairs of the light output and input ports characterized by different source-detector distances rsd and enabling illumination and detection of light using at least one selected operative pair of the light input and output ports to illuminate a region in the subject'"'"'s body by illuminating light coming from at least one light output port, irradiate a region in the body with acoustic radiation coming from the at least one acoustic output port, and collect light scattered from the illuminated region in the body by at least one light input port;
wherein when the probe device is operated, overlapping between the illuminating light and the acoustic radiation induces tagging of light scattered from an overlapping region by the acoustic radiation;
wherein said control unit is connected to said arrangement of light ports and the at least one acoustic output port, and is preprogrammed to manage a measurement session by selecting the at least one operative pair of the operative light input and output ports with respect to the at least one acoustic output port to provide an operating condition of the probe during the measurement session, the operating condition corresponding to at least one selected value of the source detector distance rsd is sufficiently small such that a difference in optical paths of shallow photons and deep photons in the illuminating light defining an optical attenuation coefficient depends on a distance traveled in a direction z and not on differences in optical paths in x or y dimensions, and light collected by said at least one operative light input port comprises the scattered light originated in the overlapping region, thereby enabling improved-accuracy calculation of the optical attenuation coefficient from light collected by the operative light input port and determination of at least one parameter of the region of interest, wherein z is a direction parallel to a direction of propagation of the acoustic radiation towards the region of interest.
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Accused Products
Abstract
A method and system are presented for use in determining one or more parameters of a subject. A region of interest of the subject is irradiated with acoustic tagging radiation, which comprises at least one acoustic tagging beam. At least a portion of the region of interest is irradiated with at least one electromagnetic beam of a predetermined frequency range. Electromagnetic radiation response of the at least portion of the region of interest is detected and measured data indicative thereof is generated. The detected response comprises electromagnetic radiation tagged by the acoustic radiation. This enables processing of the measured data indicative of the detected electromagnetic radiation response to determine at least one parameter of the subject in a region corresponding to the locations in the medium at which the electromagnetic radiation has been tagged by the acoustic radiation, and outputting data indicative of the at least one determined parameter.
56 Citations
16 Claims
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1. A probe device for use in noninvasive monitoring of at least one parameter of a region of interest in a subject'"'"'s body, the probe device comprising a support structure and a control unit wherein:
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said support structure configured to be put in contact with the body part, the support structure comprising; at least one acoustic output port associated with an acoustic unit and an arrangement of light ports comprising light input and output ports associated with respectively a detection assembly and an illumination assembly, said arrangement of light ports comprising at least one light output port located within an aperture of the acoustic unit, and a plurality of the light input ports located around said at least one light output port, wherein location of said light output and input ports is interchangeable, said arrangement of the light ports thereby defining pairs of the light output and input ports characterized by different source-detector distances rsd and enabling illumination and detection of light using at least one selected operative pair of the light input and output ports to illuminate a region in the subject'"'"'s body by illuminating light coming from at least one light output port, irradiate a region in the body with acoustic radiation coming from the at least one acoustic output port, and collect light scattered from the illuminated region in the body by at least one light input port;
wherein when the probe device is operated, overlapping between the illuminating light and the acoustic radiation induces tagging of light scattered from an overlapping region by the acoustic radiation;wherein said control unit is connected to said arrangement of light ports and the at least one acoustic output port, and is preprogrammed to manage a measurement session by selecting the at least one operative pair of the operative light input and output ports with respect to the at least one acoustic output port to provide an operating condition of the probe during the measurement session, the operating condition corresponding to at least one selected value of the source detector distance rsd is sufficiently small such that a difference in optical paths of shallow photons and deep photons in the illuminating light defining an optical attenuation coefficient depends on a distance traveled in a direction z and not on differences in optical paths in x or y dimensions, and light collected by said at least one operative light input port comprises the scattered light originated in the overlapping region, thereby enabling improved-accuracy calculation of the optical attenuation coefficient from light collected by the operative light input port and determination of at least one parameter of the region of interest, wherein z is a direction parallel to a direction of propagation of the acoustic radiation towards the region of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification