JP2015047339A5

JP2015047339A5 -

Info

Publication number: JP2015047339A5
Application number: JP2013181031A
Authority: JP
Filing date: 2013-09-02
Publication date: 2016-10-20
Anticipated expiration: 2033-09-02

Description

本発明は、以下の構成を採用する。すなわち、
被検体に照射する光を出射する出射端を含む投光手段と、
前記光を照射された前記被検体から発生する音響波を検出する検出手段と、
前記音響波を用いて前記被検体内の特性情報を取得する処理手段と、
音響波を吸収する材料から構成される吸収手段と、
を有し、
前記吸収手段は、前記被検体の表面と前記出射端の間に配置される
ことを特徴とする被検体情報取得装置である。 The present invention employs the following configuration. That is,
A light projecting means including an emitting end that emits light to irradiate the subject ;
Detecting means for detecting an acoustic wave generated from the subject irradiated with the light;
Processing means for acquiring characteristic information in the subject using the acoustic wave;
An absorption means composed of a material that absorbs acoustic waves;
Have
The absorption means is an object information acquisition apparatus, which is disposed between a surface of the object and the emission end.

Claims

A light projecting means including an emitting end that emits light to irradiate the subject ;
Detecting means for detecting an acoustic wave generated from the subject irradiated with the light;
Processing means for acquiring characteristic information in the subject using the acoustic wave;
An absorption means composed of a material that absorbs acoustic waves;
Have
2. The object information acquiring apparatus according to claim 1, wherein the absorbing means is disposed between the surface of the object and the emission end.

The object information acquiring apparatus according to claim 1, wherein the acoustic impedance of the absorbing means is a value approximate to the acoustic impedance of the object.

The acoustic impedance of the absorbing means, the object information acquiring apparatus according to claim 1 or 2, characterized in that a value in the range of 10% ± from the acoustic impedance of the subject.

The object information acquiring apparatus according to claim 1, wherein an acoustic wave attenuation coefficient of the absorption unit is larger than an acoustic wave attenuation coefficient of the object.

The object information acquiring apparatus according to claim 1, wherein the absorption unit is transmissive to the wavelength of the emitted light.

The object information acquiring apparatus according to claim 1, further comprising a light source that generates the light.

The object information acquiring apparatus according to claim 6 , wherein the light source adjusts the intensity of the light based on an absorption coefficient and a thickness of the light of the absorption unit.

Said absorbing means, said object information acquiring apparatus according to any one of claims 1 to 7, characterized in that disposed on the light irradiation region of the object surface.

The object information acquiring apparatus according to claim 8 , wherein the absorption unit is disposed on a region that is larger than the emission end and surrounds the light irradiation region.

The object information acquiring apparatus according to further comprising a placement acoustic matching material to any one of claims 1 to 9, characterized in between the absorbent means and the object surface.

The subject, a light absorber inside object information acquiring apparatus according to any one of claims 1 to 10, characterized in that a living body including a reflector of acoustic waves.

The object information acquiring apparatus according to any one of claims 1 to 11, further comprising a display means for displaying the characteristic information the processing unit has acquired.

An exit end from which light is emitted;
An absorption means for absorbing an acoustic wave provided at the emission end;
Detecting means for detecting an acoustic wave generated from the subject that has absorbed the light.

The acoustic impedance of the absorbing means is a value in a range of ± 10% from the acoustic impedance of the subject.
The photoacoustic wave detection apparatus according to claim 13.

The acoustic wave attenuation coefficient of the absorbing means is larger than the acoustic wave attenuation coefficient of the subject.
The photoacoustic wave detection apparatus according to claim 13 or 14,

The absorbing means is transparent to the wavelength of the emitted light
The photoacoustic wave detection apparatus according to claim 13, wherein the photoacoustic wave detection apparatus is provided .

Irradiate the subject with light through the acoustic wave absorbing member,
A subject information acquisition method for acquiring characteristic information in the subject based on an acoustic wave generated from the subject irradiated with the light.