Abstract: This invention provides a phantom whose light propagation characteristics and acoustic propagation characteristics are similar to those of human tissues and which allows detection of an absorber also with an ultrasonic wave diagnostic apparatus and allows adjustment of the oxygen saturation. A phantom has light absorbers 12a to 12d in a phantom base material 11, in which the light absorbers 12a to 12d approximate the light absorption coefficient ratio at two or more wavelengths to that of biological tissues, and the acoustic propagation characteristics of the phantom base material 11 and the light absorbers 12a to 12d are different from each other.

Abstract: An object information acquiring apparatus comprises an irradiating unit which irradiates light on an object; a holding member which includes a light-absorbing member whose optical characteristics with respect to irradiated light are known and which holds the object; a detector which detects acoustic waves generated by tissue in the object and the light-absorbing member due to light irradiation; and a computing unit which calculates optical characteristics of the tissue in the object and the light-absorbing member by using the detected acoustic waves and which corrects the optical characteristics of the tissue in the object by using the calculated optical characteristics of the light-absorbing member and the known optical characteristics.

Abstract: Provided is an object information acquiring apparatus which uses a phantom having a base material, an absorber arranged inside the base material, and an identification tag, the apparatus including: a probe which receives an acoustic wave and outputs an electrical signal; a unit which reads in information from the identification tag; a unit which generates calibration information using an electrical signal based on an acoustic wave propagated from the phantom, and the read information; and a unit which acquires object information using the electrical signal based on the acoustic wave propagated from the phantom, wherein the identification tag stores information relating to the phantom.

Abstract: In the performance evaluation of a photoacoustic measurement apparatus using a phantom, an increase in the accuracy of the evaluation of the apparatus is improved. A phantom capable of being used to evaluate a photoacoustic measurement apparatus includes a recording unit having stored therein information regarding a temporal change in an optical characteristic or an acoustic characteristic of the phantom.

Abstract: This invention provides a phantom whose light propagation characteristics and acoustic propagation characteristics are similar to those of human tissues and which allows detection of an absorber also with an ultrasonic wave diagnostic apparatus and allows adjustment of the oxygen saturation. A phantom has light absorbers 12a to 12d in a phantom base material 11, in which the light absorbers 12a to 12d approximate the light absorption coefficient ratio at two or more wavelengths to that of biological tissues, and the acoustic propagation characteristics of the phantom base material 11 and the light absorbers 12a to 12d are different from each other.

Abstract: The photoacoustic blood model contains two or more kinds of light absorbing compounds in a blood model base material, in which the absorption coefficient ratios ?[?2]/?[?1] at arbitrary two wavelengths ?1 and ?2 (?1<?2) of 600 nm or more and 1100 nm or less of the compounds are different from each other and the parameter S calculated from Equation (1) is 0 or more and 100 or less, in which HbO2[?1] indicates an absorption coefficient of oxyhemoglobin at the wavelength ?1, HbO2[?2] indicates an absorption coefficient of oxyhemoglobin at the wavelength ?2, Hb[?1] indicates an absorption coefficient of deoxyhemoglobin at the wavelength ?1, Hb[?2] indicates an absorption coefficient of deoxyhemoglobin at the wavelength ?2, and P? indicates a ratio (P?2/P?1) of a photoacoustic signal intensity P?2 obtained by irradiation with light of the wavelength ?2 to a photoacoustic signal intensity P?1 obtained by irradiation with light of the wavelength ?1.

Abstract: Since a medium having light propagation properties and sound propagation properties similar to those of human tissues is provided, reflection of light and an acoustic wave at a surface of a test portion is prevented, and accuracy control of a photoacoustic wave diagnostic apparatus is realized. A photoacoustic matching material is provided which includes a polyol, an inorganic oxide, and a pigment, the latter two being dispersable in the polyol, and in this photoacoustic matching material, a dispersed amount of the inorganic oxide to the polyol is in a range of 0.10 to 0.25 percent by weight, and a dispersed amount of the pigment to the polyol is in a range of 0.0001 to 0.0005 percent by weight.

Abstract: A phantom used for calibrating an object information acquiring apparatus that irradiates light into an object and acquires characteristic information inside the object based on an acoustic wave propagated from the object, the phantom comprises a base material; and a simulated tissue portion that simulates a three-dimensional structure of a tissue inside a living body, wherein the simulated tissue portion is disposed inside the base material, and has a simulated layer, which is a layer simulating optical characteristics of the tissue inside the living body, on the surface thereof.

Abstract: An object information acquiring apparatus comprises an irradiating unit which irradiates light on an object; a holding member which includes a light-absorbing member whose optical characteristics with respect to irradiated light are known and which holds the object; a detector which detects acoustic waves generated by tissue in the object and the light-absorbing member due to light irradiation; and a computing unit which calculates optical characteristics of the tissue in the object and the light-absorbing member by using the detected acoustic waves and which corrects the optical characteristics of the tissue in the object by using the calculated optical characteristics of the light-absorbing member and the known optical characteristics.

Abstract: Since a medium having light propagation properties and sound propagation properties similar to those of human tissues is provided, reflection of light and an acoustic wave at a surface of a test portion is prevented, and accuracy control of a photoacoustic wave diagnostic apparatus is realized. A photoacoustic matching material is provided which includes a polyol, an inorganic oxide, and a pigment, the latter two being dispersable in the polyol, and in this photoacoustic matching material, a dispersed amount of the inorganic oxide to the polyol is in a range of 0.10 to 0.25 percent by weight, and a dispersed amount of the pigment to the polyol is in a range of 0.0001 to 0.0005 percent by weight.

Abstract: A phantom has a base material, light absorbers/scatterers in the base material, and a film member on the surface of the base material. The base material has light propagation characteristics and acoustic propagation characteristics similar to those of a human tissue. The film member covers at least a portion of the base material. The phantom is for use with photoacoustic-wave diagnostic apparatus.

Abstract: Since a medium having light propagation properties and sound propagation properties similar to those of human tissues is provided, reflection of light and an acoustic wave at a surface of a test portion is prevented, and accuracy control of a photoacoustic wave diagnostic apparatus is realized. A photoacoustic matching material is provided which includes a polyol, an inorganic oxide, and a pigment, the latter two being dispersable in the polyol, and in this photoacoustic matching material, a dispersed amount of the inorganic oxide to the polyol is in a range of 0.10 to 0.25 percent by weight, and a dispersed amount of the pigment to the polyol is in a range of 0.0001 to 0.0005 percent by weight.

Abstract: Provided is an ultrasonograph and the like capable of easily specifying defective parts of an ultrasound probe and appropriately treating the defective parts.

Abstract: Provided is an ultrasonograph and the like capable of easily specifying defective parts of an ultrasound probe and appropriately treating the defective parts.

Abstract: A detecting device for detecting an enzyme present on a predetermined location on a substrate using a luminescence reaction, includes a mounting stage for mounting the substrate, a spotting means for locally applying a micro-droplet substance which contributes to a luminescence reaction with the enzyme onto a predetermined location on the substrate, and a detecting means for detecting a luminescence signal generated by applying the substance based on the timing of discharging a liquid droplet.