Abstract: An information processing apparatus includes an image data acquisition unit and a template data acquisition unit. The image data acquisition unit acquires a plurality of pieces of image data generated by performing a plurality of ultrasonic wave transmission and reception operations on a subject while changing an ultrasonic wave transmission and reception mode. The template data acquisition unit acquires a plurality of pieces of template data corresponding to the plurality of ultrasonic wave transmission and reception operations, respectively. The similarity information acquisition unit acquires information indicating a similarity between an image value sequence of the plurality of pieces of image data at a target position and a template data sequence of the plurality of pieces of template data at the target position.

Abstract: An apparatus that acquires specific information on a subject on the basis of a signal originating from an acoustic wave which has propagated from the subject and propagated through an acoustic medium disposed between the subject and a receiving unit is provided. The apparatus includes: a wave number acquiring unit acquiring a spatial wave number component of the signal; a correcting unit correcting the spatial wave number component using parameters of a longitudinal wave velocity in the subject and a transverse wave velocity in the acoustic medium; and an information acquiring unit acquiring the specific information using the corrected spatial wave number component.

Abstract: An information-processing apparatus according to the present invention is an information-processing apparatus that processes information based on a photoacoustic wave that is generated from a subject by light emission to the subject. The information-processing apparatus includes image-data-acquiring means that acquires a plurality of image data for multiple times of light emission, based on a photoacoustic wave that is generated by the multiple times of light emission to the subject, template-data-acquiring means that acquires a plurality of template data for the multiple times of light emission, and correlation-information-acquiring means that acquires information about correlation between an image value column of the plurality of image data at a noteworthy position and a template data column of the plurality of template data at the noteworthy position.

Abstract: An information processing apparatus includes an image data acquisition unit and a template data acquisition unit. The image data acquisition unit acquires a plurality of pieces of image data generated by performing a plurality of ultrasonic wave transmission and reception operations on a subject while changing an ultrasonic wave transmission and reception mode. The template data acquisition unit acquires a plurality of pieces of template data corresponding to the plurality of ultrasonic wave transmission and reception operations, respectively. The similarity information acquisition unit acquires information indicating a similarity between an image value sequence of the plurality of pieces of image data at a target position and a template data sequence of the plurality of pieces of template data at the target position.

Abstract: A photoacoustic imaging apparatus includes a light irradiation unit, a receiving unit, and a processing unit. The light irradiation unit irradiates an object with first light for generating a photoacoustic wave corresponding to a positive coding element constituting a coding sequence and irradiates the object with second light for generating a photoacoustic wave corresponding to a negative coding element constituting the coding sequence. The receiving unit outputs a first signal by receiving the photoacoustic wave corresponding to the positive coding element, the photoacoustic wave being generated by irradiating the object with the first light, and outputs a second signal by receiving the photoacoustic wave corresponding to the negative coding element, the photoacoustic wave being generated by irradiating the object with the second light. The processing unit obtains a decoded signal by performing a decoding process on the first signal and the second signal based on information on the coding sequence.

Abstract: The present disclosure relates to a photoacoustic imaging apparatus. The photoacoustic imaging apparatus includes a light irradiation unit, a receiving unit, and a processing unit. The light irradiation unit irradiates an object with first intensity-modulated light of a first wavelength corresponding to a first coding sequence and second intensity-modulated light of a second wavelength corresponding to a second coding sequence different from the first coding sequence. The receiving unit outputs a first signal by receiving photoacoustic waves generated by irradiating the object with the first and second intensity-modulated light. The processing unit obtains at least one of a first decoded signal corresponding to the first wavelength and a second decoded signal corresponding to the second wavelength by performing a decoding process on the first signal based on information on the first and second coding sequences.

Abstract: An information processing apparatus includes: a signal acquiring unit configured to acquire a photoacoustic signal, which has been obtained based on an acoustic wave generated from an object by irradiating light to different positions on the object for a plurality of times; a region setting unit configured to set a first region and a second region inside the object, based on a distance from a position at which a light axis of the light intersects with the object; and a generating unit configured to generate a first reconstructed image by using a photoacoustic signal corresponding to an acoustic wave generated from the first region, and to generate a second reconstructed image by using a photoacoustic signal corresponding to an acoustic wave generated from the second region.

Abstract: The present invention uses an object information acquiring apparatus having: an optical transmitter that transmits light and emits the light to an object; a first optical meter disposed at the incidence side of the optical transmitter; a second optical meter disposed at the emission side of the optical transmitter; a calculator that calculates an equation that indicates the relationship between the fluence of light measured by the first optical meter and the fluence of light measured by the second optical meter; a probe that receives an acoustic wave that is generated from the object due to the light emitted by the optical transmitter and converts the acoustic wave; and a processor that acquires specific information about the inside of the object.

Abstract: A photoacoustic apparatus includes a light irradiation unit configured to irradiate a first irradiation region of a subject with first intensity modulated light corresponding to a first coding sequence and to irradiate a second irradiation region of the subject with second intensity modulated light corresponding to a second coding sequence, a reception unit configured to receive photoacoustic waves generated when the subject is irradiated with the first and the second intensity modulated light and output a first signal, and a processing unit configured to perform decoding processing on the first signal based on information on the first and the second coding sequences to acquire a first decoded signal corresponding to the first irradiation region or a second decoded signal corresponding to the second irradiation region.

Abstract: A photoacoustic measuring apparatus includes a light source, a movable holding unit which holds an object, a light diffusing unit which fixes the distance between the light diffusing unit and the holding unit and diffuses light incident from the light source, and an acoustic wave obtaining unit which obtains an acoustic wave generated from the object by the light emitted via the holding unit and the light diffusing unit.

Abstract: A subject-information acquisition apparatus includes a light source; a holding member configured to hold a subject so as to surround the subject; at least one transducer configured to receive an acoustic wave generated by irradiating the subject with light from the light source; and a signal processing unit configured to obtain distribution information using a received signal output from the transducer. The holding member includes a marker that absorbs the light and generates an acoustic wave.

Abstract: This invention employs an object information acquiring apparatus including a probe for receiving, as a received signal, an acoustic wave which is generated within an object irradiated with light and propagates on an object surface, and a processor for generating object information, which is information based on an internal optical characteristic value of the object, by using intensity of the received signal. The processor corrects the intensity of the received signal by using the reflectance upon the acoustic wave entering the probe which is calculated based on the angle of the acoustic wave entering the probe, and on the acoustic impedance and acoustic velocity of the object and the probe.

Abstract: A subject-information acquisition apparatus includes a light source; a holding member configured to hold a subject so as to surround the subject; at least one transducer configured to receive an acoustic wave generated by irradiating the subject with light from the light source; and a signal processing unit configured to obtain distribution information using a received signal output from the transducer. The holding member includes a marker that absorbs the light and generates an acoustic wave.

Abstract: an object information acquiring apparatus comprises a light emission unit configured to emit light beams from a plurality of emission positions; a conversion unit configured to convert acoustic waves generated when an object is irradiated with the light beams emitted by the light emission unit into electric signals; a beam profile acquisition unit configured to acquire information relating to beam profiles of the light beams emitted by the light emission unit, the beam profiles corresponding respectively to the plurality of emission positions; and a characteristic information acquisition unit configured to acquire characteristic information of the object on the basis of the information relating to the beam profiles corresponding to the plurality of emission positions and the electric signals.

Abstract: To suppress variation of a distribution of radiated light depending on a position of a radiating unit in an information acquisition apparatus that uses an articulated arm as a waveguide unit. A waveguide unit (103) includes a plurality of first waveguides (103c), (103g), and (103k) that guide light in a direction parallel to a radiating direction in which the light is radiated from a radiating unit (105) to an object (123), at least one of second waveguides (103a), (103e), and (103i) that guides the light in an in-plane direction perpendicular to the radiating direction, and a plurality of articulations that each include therein a mirror disposed so as to substantially perpendicularly bend a wave guiding direction. The light is guided through the plurality of first waveguides (103c), (103g), and (103k) in the same wave guiding direction.

Abstract: A processing system according to an aspect of the present disclosure includes a transmittance filter obtaining unit and a correcting unit. The transmittance filter obtaining unit obtains a transmittance filter representing complex transmittances corresponding to a plurality of frequencies in the case where an acoustic wave passes through a first medium. The correcting unit corrects an electric signal by using the transmittance filter and obtains a corrected electric signal.

Abstract: A photoacoustic measuring apparatus includes a light source, a movable holding unit which holds an object, a light diffusing unit which fixes the distance between the light diffusing unit and the holding unit and diffuses light incident from the light source, and an acoustic wave obtaining unit which obtains an acoustic wave generated from the object by the light emitted via the holding unit and the light diffusing unit.

Abstract: A photoacoustic measuring apparatus includes a light source, a movable holding unit which holds an object, a light diffusing unit which fixes the distance between the light diffusing unit and the holding unit and diffuses light incident from the light source, and an acoustic wave obtaining unit which obtains an acoustic wave generated from the object by the light emitted via the holding unit and the light diffusing unit.

Abstract: There is provided an information acquisition apparatus configured to process a signal acquired by receiving an acoustic wave generated in a subject by irradiating the subject with light and propagated through a medium provided between the subject and a reception unit. The information acquisition apparatus includes a position setting unit configured to set a position of interest, and an acquisition unit configured to determine a first signal of interest derived from the acoustic wave generated at the position of interest and propagated through the medium as a transverse wave from among the signals with use of information indicating an acoustic velocity of the transverse wave in the medium, and acquire subject information at the position of interest with use of the first signal of interest.

Abstract: A phantom used for evaluating an object information acquiring apparatus comprises a first layer irradiated with at least one of light having a first central wavelength based on the optical coherence tomography and light having a second central wavelength based on the photoacoustic tomography, and which has a first scattering region having a first light scattering coefficient, and a second scattering region forming a first pattern with the first scattering region and having a second light scattering coefficient; and a second layer which is integrated with the first layer, and has a first absorption region having a first light absorption coefficient, and a second absorption region forming a second pattern with the first absorption region and having a second light absorption coefficient.