JP4547804B2

JP4547804B2 - Subcutaneous fat thickness measurement device

Info

Publication number: JP4547804B2
Application number: JP2000397652A
Authority: JP
Inventors: 真司内田; 和也近藤
Original assignee: Panasonic Corp; Matsushita Electric Works Ltd
Current assignee: Panasonic Corp; Panasonic Electric Works Co Ltd
Priority date: 2000-12-27
Filing date: 2000-12-27
Publication date: 2010-09-22
Anticipated expiration: 2020-12-27
Also published as: JP2002191578A

Description

【０００１】
【発明の属する技術分野】
本発明は、皮下脂肪厚、特に皮下脂肪厚分布を測定する皮下脂肪厚測定装置に関する。
【０００２】
【従来の技術】
従来の皮下脂肪厚測定装置としては、例えば、特開平１０−３１４１４２号公報に開示されている皮下脂肪厚計がある。この皮下脂肪厚計は、測定部で被検体の皮下脂肪を挟むことにより、皮下脂肪厚を測定するものである。
【０００３】
【発明が解決しようとする課題】
しかし、この従来の皮下脂肪厚測定装置は、皮下脂肪厚の測定位置を判別することが困難であり、測定位置と皮下脂肪厚との対応を取ることができないという問題があった。そのため、腹部等の皮下脂肪厚分布を測定及び表示することができなかった。
【０００４】
本発明は、上記従来の問題点に鑑み、容易に皮下脂肪厚の測定位置を判別することができ、測定位置と皮下脂肪厚との対応を取ることにより、皮下脂肪厚分布を測定することができる、簡易な皮下脂肪厚測定装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明の皮下脂肪厚測定装置は、被検体である生体の皮下脂肪厚を計測するための皮下脂肪厚測定装置であって、被検体に光を照射する光源、固体撮像素子からなり前記被検体内を伝搬した光を検出する光検出器、及び前記光検出器での検出結果に基づいて皮下脂肪厚を算出する皮下脂肪厚算出手段を有する皮下脂肪厚計測手段と、前記固体撮像素子により撮像した生体画像から生体表面上の特徴点を抽出し、抽出した特徴点の移動距離を算出することで前記被検体における皮下脂肪厚の測定位置を判別する測定位置判別手段とを備えたことを特徴とする。
【０００６】
【発明の実施の形態】
本発明の皮下脂肪厚測定装置は、被検体である生体の皮下脂肪厚を計測するための皮下脂肪厚測定装置であって、被検体に光を照射する光源、固体撮像素子からなり前記被検体内を伝搬した光を検出する光検出器、及び前記光検出器での検出結果に基づいて皮下脂肪厚を算出する皮下脂肪厚算出手段を有する皮下脂肪厚計測手段と、前記固体撮像素子により撮像した生体画像から生体表面上の特徴点を抽出し、抽出した特徴点の移動距離を算出することで前記被検体における皮下脂肪厚の測定位置を判別する測定位置判別手段とを備えたことを特徴とする。このようにすると、簡易な構成により、容易に皮下脂肪厚の測定位置を判別することができ、測定位置と皮下脂肪厚との対応を取ることが可能となる。また、前記固体撮像素子で被検体表面を撮像し、撮像した画像情報を基に、生体表面の特徴点を抽出し、皮下脂肪厚測定装置を生体表面と接触させながら、移動させて、画像情報の特徴点の移動距離を算出することにより、前記移動距離から皮下脂肪厚の測定位置を判別することができる。
【０００７】
さらに、皮下脂肪厚計測手段により計測した被検体の皮下脂肪厚と、測定位置判別手段により判別した前記被検体における皮下脂肪厚の測定位置とに基づいて、前記被検体の皮下脂肪厚分布を算出する、皮下脂肪厚分布算出手段を備えることが好ましい。このようにすると、簡易な構成により、測定位置と皮下脂肪厚とに基づいて、容易に皮下脂肪厚分布を測定することができる。
【０００８】
さらに、皮下脂肪厚計測手段により計測した被検体の皮下脂肪厚または／及び皮下脂肪厚分布算出手段により算出した前記被検体の皮下脂肪厚分布を表示する皮下脂肪厚表示手段を備え、前記皮下脂肪厚表示手段と、前記皮下脂肪厚計測手段または／及び前記皮下脂肪厚分布算出手段とが、有線または無線で接続されていることが好ましい。このようにすると、簡易な構成により、皮下脂肪厚または／及び皮下脂肪厚分布を表示することができ、測定結果を迅速かつ容易に見ることができる。
【００１０】
光源としては、特に限定されないが、例えば、波長６５０ｎｍの半導体レ−ザ、波長６３２．８ｎｍのＨｅ−Ｎｅレ−ザ、及びＬＥＤ光源等が挙げられる。
【００１１】
光源から出射される光の波長は、特に限定されないが、６６０ｎｍ以下の波長の光を用いれば、脂肪層と筋肉層の吸収特性の差が大きくなるので、高精度に皮下脂肪厚の計測ができるため好ましい。
【００１４】
本発明の他の実施の形態による皮下脂肪厚測定装置は、皮下脂肪厚表示手段において、略円形状と、前記略円形状の内側または外側に、皮下脂肪厚分布算出手段により算出した被検体の腹部の皮下脂肪厚分布とを表示することを特徴とする。このようにすると、腹部の皮下脂肪厚分布が、視覚的に把握しやすくなる。
【００１５】
ここで、略円形状が楕円であることが好ましい。このようにすると、形状を表示する際の数学的な計算が簡単となる。
【００１６】
本発明のさらに他の実施の形態による皮下脂肪厚測定装置は、皮下脂肪厚データを入力する手段を備え、皮下脂肪厚表示手段が、皮下脂肪厚計測手段により計測した被検体の皮下脂肪厚と前記皮下脂肪厚データとを同時に表示する機能を有することを特徴とする。ここで、前記皮下脂肪厚データとしては、例えば、被検体である測定者の目標とする皮下脂肪厚や、多人数の皮下脂肪厚データにより算出された標準値または分布データ等が挙げられる。このようにすると、測定した皮下脂肪厚を容易に他の皮下脂肪厚データと比較することができる。
【００１８】
【実施例】
以下、図面を用いて、本発明の皮下脂肪厚測定装置を実施例により説明する。図１は、本発明の一実施の形態による皮下脂肪厚測定装置を示す概略図であり、図２は、同皮下脂肪厚測定装置を用いて測定した、皮下脂肪厚と測定位置との関係を示すグラフである。
【００１９】
本実施例の皮下脂肪厚測定装置は、皮下脂肪厚計測器本体８、皮下脂肪厚表示手段であるディスプレイ１０、及び皮下脂肪厚分布算出手段２３から構成されており、それぞれケーブル９により接続されている。
【００２０】
皮下脂肪厚計測器本体８内には、光源１、光検出器４及び皮下脂肪厚算出手段５から構成される皮下脂肪厚計測手段と、ローラ部である回転ロ−ラ６及び回転数計測手段７から構成される測定位置判別手段とが設けられ、光検出器４に不要な光が入射しないように外部光が遮光されている。本実施例では、光源１として波長６５０ｎｍの半導体レ−ザを、光検出器４としてシリコンフォトダイオードを、回転数計測手段７として光式エンコ−ダを用いた。
【００２１】
光源１より出射した光は、被検体である生体２の皮膚組織２０を通過し、皮下脂肪組織２１に到達する。皮膚組織２０及び皮下脂肪組織２１は散乱体であるため、光は拡散反射しながら伝播する。拡散反射した光の一部は筋肉組織２２に到達する。筋肉組織２２には皮下脂肪組織２１よりも多くの血液が含まれているために、光は大きく減衰する。皮下脂肪組織２１や筋肉組織２２等の生体組織内を伝播している光は拡散し、例えば光路３をたどって、光検出器４に到達する。
【００２２】
皮下脂肪厚の大小によって、筋肉組織２２に到達する光の量が大きく変わるため、光検出器４の検出値を計測することにより、皮下脂肪厚算出手段５を用いて、皮下脂肪厚を算出することができる。
【００２３】
皮下脂肪厚の測定位置を判別するための測定位置判別手段は、ローラ部である回転ローラ６と回転数計測手段７とにより構成されている。回転ロ−ラ６を生体２に密着させながら回転させ、回転数計測手段７を用いて回転数及び回転方向を計測することにより、皮下脂肪厚計測器本体８の移動方向及び移動距離を算出することで、皮下脂肪厚を計測している位置情報を得ることができる。
【００２４】
皮下脂肪厚算出結果と位置情報は、ケーブル９を介して、皮下脂肪厚算出手段５及び回転数計測手段７から皮下脂肪厚分布算出手段２３に伝送され、皮下脂肪厚分布算出手段２３において算出された皮下脂肪厚分布算出結果が、ケーブル９を介してディスプレイ１０に伝送される。
【００２５】
回転ロ−ラ６を腹部の臍部に密着させて、臍部から腹部の周囲に沿って皮下脂肪厚計測器本体８を移動させ、臍部からの位置を回転数計測手段７で計測しながら、光検出器４で生体からの帰還光を検出し、腹部の周囲の皮下脂肪厚を算出した結果を図２に示す。測定位置が、臍部から背中、そして再び臍部に変わるにつれて、皮下脂肪厚が変化している様子がわかる。
【００２６】
次に、ウエスト周囲長と皮下脂肪厚分布値を用いて、腹部での皮下脂肪厚分布を表示する方法について説明する。
【００２７】
まず、臍部から腹部の周囲に沿って皮下脂肪厚計測器本体８を移動させた際の、回転ローラ６の回転数からウエスト周囲長が求まる。
【００２８】
次に、人の腹部形状を、略円状、好ましくは楕円形状で近似する。これにより、人の腹部形状を、より現実に近く表示することができる。ここで、ウエストの横方向の幅、すなわちウエスト幅を、腹部の前面部と後面部との厚み、すなわち腹部厚径よりも大きくした関数で近似することが好ましい。ウエスト幅と腹部厚径との比率として、例えば、男性の場合、標準値として１．２２を用い、ウエスト周囲長が標準より大きい場合は、標準値よりも減少させて１．１５程度の値を用い、逆に、やせている場合は標準値よりも大きくさせて、例えば１．３程度の値を用いることが好ましい。一方、女性の場合は、標準値として１．０８を用い、ウエスト周囲長が標準より大きい場合は、標準値よりも減少させて１．０６を用い、逆に、ウエスト周囲長が小さい場合は、標準値よりも増大させて１．１５を用いることが好ましい。ここで、年齢も考慮して、年齢別に上記比率をあらかじめ準備しておき、その値を用いることがさらに好ましい。
【００２９】
次に、図１に示すように、上記比率で楕円形状１１を描画する。そして、その外側に計測された皮下脂肪厚曲線１２を描画する。このとき、皮下脂肪厚曲線１２の周囲長がウエスト周囲長と同じになるように描画する。楕円形状１１と皮下脂肪厚曲線１２とにより囲まれた部分が皮下脂肪組織１３に相当する。図１から、腹部の周囲の皮下脂肪厚分布が、視覚的にわかりやすく表示されていることがわかる。
【００３０】
なお、上記実施例では、楕円形状の外側に皮下脂肪厚曲線を描画する方法について述べたが、これに限定されず、ウエスト周囲長と同じ外形長である楕円を描画し、その内側に、測定した皮下脂肪厚曲線を描画してもよい。
【００３１】
また、測定位置判別手段のローラ部として回転ロ−ラを用い、回転数計測手段を１つ用いた例について説明したが、これに限定されず、例えば、ローラ部として球状のものを用い、回転数計測手段を２つ用いると、二次元的に皮下脂肪厚計測器本体の移動方向及び移動距離を測定することができる。
【００３２】
また、測定位置判別手段として固体撮像素子を用い、それにより生体を撮像し、毛穴、血管等の生体表面上の特徴点を抽出し、皮下脂肪厚計測器本体を移動させた際の、特徴点の移動距離を算出することにより、測定位置を算出してもよい。このとき、測定位置判別手段である固体撮像素子を光検出器として兼用すると、部品点数の削減と装置の小型化に有用であり好ましい。
【００３３】
また、光源１を生体に密着した場合について説明したが、これに限定されず、レーザー光源を生体より離れた位置に設置し、生体に比較的絞られたスポット光を照射してもよい。
【００３４】
また、光検出器４を生体に密着した場合について説明したが、これに限定されず、例えば固体撮像素子を、生体より離れて設置し、皮膚表面からの拡散反射光を検出し、皮下脂肪厚を算出してもよい。
【００３５】
【発明の効果】
本発明によれば、容易に皮下脂肪厚の測定位置を判別することができ、測定位置と皮下脂肪厚との対応を取ることにより、皮下脂肪厚分布を測定することができる、簡易な皮下脂肪厚測定装置を提供することができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態による皮下脂肪厚測定装置を示す概略図
【図２】同皮下脂肪厚測定装置を用いて測定した、皮下脂肪厚と測定位置との関係を示すグラフ
【符号の説明】
１光源
２生体
３光路
４光検出器
５皮下脂肪厚算出手段
６回転ロ−ラ
７回転数計測手段
８皮下脂肪厚計測器本体
９ケーブル
１０ディスプレイ
１１楕円形状
１２皮下脂肪厚曲線
１３，２１皮下脂肪組織
２０皮膚組織
２２筋肉組織
２３皮下脂肪厚分布算出手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a subcutaneous fat thickness, subcutaneous fat thickness measurement equipment in particular measuring subcutaneous fat thickness distribution.
[0002]
[Prior art]
As a conventional subcutaneous fat thickness measuring device, for example, there is a subcutaneous fat thickness meter disclosed in JP-A-10-314142. This subcutaneous fat thickness meter measures the subcutaneous fat thickness by sandwiching the subcutaneous fat of the subject in the measurement unit.
[0003]
[Problems to be solved by the invention]
However, this conventional subcutaneous fat thickness measurement apparatus has a problem that it is difficult to determine the measurement position of the subcutaneous fat thickness, and the correspondence between the measurement position and the subcutaneous fat thickness cannot be taken. Therefore, the subcutaneous fat thickness distribution in the abdomen etc. could not be measured and displayed.
[0004]
In view of the above-described conventional problems, the present invention can easily determine the measurement position of the subcutaneous fat thickness, and can measure the subcutaneous fat thickness distribution by taking the correspondence between the measurement position and the subcutaneous fat thickness. possible, and to provide a simple subcutaneous fat thickness measurement equipment.
[0005]
[Means for Solving the Problems]
The subcutaneous fat thickness measuring apparatus of the present invention is a subcutaneous fat thickness measuring apparatus for measuring the subcutaneous fat thickness of a living body as a subject, and includes a light source that irradiates light to the subject and a solid-state imaging device. An image is picked up by the solid-state imaging device having a photodetector for detecting the light propagating inside, a subcutaneous fat thickness calculating means for calculating the subcutaneous fat thickness based on the detection result of the photodetector, and the solid-state imaging device And a measurement position discriminating means for discriminating a measurement position of subcutaneous fat thickness in the subject by extracting a feature point on the surface of the living body from the obtained biological image and calculating a moving distance of the extracted feature point. And
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The subcutaneous fat thickness measuring apparatus of the present invention is a subcutaneous fat thickness measuring apparatus for measuring the subcutaneous fat thickness of a living body as a subject, and includes a light source that irradiates light to the subject and a solid-state imaging device. An image is picked up by the solid-state imaging device having a photodetector for detecting the light propagating inside, a subcutaneous fat thickness calculating means for calculating the subcutaneous fat thickness based on the detection result of the photodetector, and the solid-state imaging device And a measurement position discriminating means for discriminating a measurement position of subcutaneous fat thickness in the subject by extracting a feature point on the surface of the living body from the obtained biological image and calculating a moving distance of the extracted feature point. And In this way, the measurement position of the subcutaneous fat thickness can be easily discriminated with a simple configuration, and the correspondence between the measurement position and the subcutaneous fat thickness can be taken. In addition, the surface of the subject is imaged by the solid-state imaging device, the feature points of the living body surface are extracted based on the captured image information, and the subcutaneous fat thickness measuring device is moved while being in contact with the living body surface to obtain image information. By calculating the movement distance of the feature point, it is possible to determine the measurement position of the subcutaneous fat thickness from the movement distance.
[0007]
Further, the subcutaneous fat thickness distribution of the subject is calculated based on the subcutaneous fat thickness of the subject measured by the subcutaneous fat thickness measuring means and the measurement position of the subcutaneous fat thickness in the subject determined by the measurement position discriminating means. Preferably, a subcutaneous fat thickness distribution calculating means is provided. In this way, the subcutaneous fat thickness distribution can be easily measured with a simple configuration based on the measurement position and the subcutaneous fat thickness.
[0008]
And further comprising a subcutaneous fat thickness display means for displaying the subcutaneous fat thickness of the subject measured by the subcutaneous fat thickness measuring means and / or the subcutaneous fat thickness distribution of the subject calculated by the subcutaneous fat thickness distribution calculating means, The thickness display means and the subcutaneous fat thickness measuring means or / and the subcutaneous fat thickness distribution calculating means are preferably connected by wire or wirelessly. In this way, the subcutaneous fat thickness or / and the subcutaneous fat thickness distribution can be displayed with a simple configuration, and the measurement result can be viewed quickly and easily.
[0010]
The light source is not particularly limited, and examples thereof include a semiconductor laser having a wavelength of 650 nm, a He—Ne laser having a wavelength of 632.8 nm, and an LED light source.
[0011]
The wavelength of the light emitted from the light source is not particularly limited, but if light having a wavelength of 660 nm or less is used, the difference in absorption characteristics between the fat layer and the muscle layer becomes large, so that the subcutaneous fat thickness can be measured with high accuracy. Therefore, it is preferable.
[0014]
The subcutaneous fat thickness measurement apparatus according to another embodiment of the present invention includes a subcutaneous fat thickness display unit that includes a substantially circular shape, and an object calculated by the subcutaneous fat thickness distribution calculating unit inside or outside the substantially circular shape. The abdominal subcutaneous fat thickness distribution is displayed. This makes it easier to visually grasp the subcutaneous fat thickness distribution in the abdomen.
[0015]
Here, the substantially circular shape is preferably an ellipse. This simplifies mathematical calculations when displaying the shape.
[0016]
A subcutaneous fat thickness measurement apparatus according to still another embodiment of the present invention includes means for inputting subcutaneous fat thickness data, and the subcutaneous fat thickness display means and the subcutaneous fat thickness of the subject measured by the subcutaneous fat thickness measurement means. It has a function of simultaneously displaying the subcutaneous fat thickness data. Here, examples of the subcutaneous fat thickness data include a target subcutaneous fat thickness of a measurement person who is a subject, a standard value or distribution data calculated from subcutaneous fat thickness data of a large number of people, and the like. In this way, the measured subcutaneous fat thickness can be easily compared with other subcutaneous fat thickness data.
[0018]
【Example】
Hereinafter, with reference to the accompanying drawings, illustrated by the subcutaneous fat thickness measurement equipment of the present invention embodiment. FIG. 1 is a schematic view showing a subcutaneous fat thickness measuring apparatus according to an embodiment of the present invention, and FIG. 2 shows the relationship between the subcutaneous fat thickness and the measurement position measured using the subcutaneous fat thickness measuring apparatus. It is a graph to show.
[0019]
The subcutaneous fat thickness measuring apparatus of this embodiment is composed of a subcutaneous fat thickness measuring device main body 8, a display 10 which is a subcutaneous fat thickness display means, and a subcutaneous fat thickness distribution calculating means 23, which are connected by a cable 9. Yes.
[0020]
In the subcutaneous fat thickness measuring device main body 8, a subcutaneous fat thickness measuring means comprising a light source 1, a light detector 4 and a subcutaneous fat thickness calculating means 5, a rotary roller 6 which is a roller portion, and a rotational speed measuring means are provided. 7 is provided, and external light is shielded so that unnecessary light does not enter the photodetector 4. In this embodiment, a semiconductor laser having a wavelength of 650 nm is used as the light source 1, a silicon photodiode is used as the photodetector 4, and an optical encoder is used as the rotation speed measuring means 7.
[0021]
The light emitted from the light source 1 passes through the skin tissue 20 of the living body 2 that is the subject and reaches the subcutaneous fat tissue 21. Since the skin tissue 20 and the subcutaneous fat tissue 21 are scatterers, light propagates while being diffusely reflected. Part of the diffusely reflected light reaches the muscle tissue 22. Since the muscle tissue 22 contains more blood than the subcutaneous fat tissue 21, the light is greatly attenuated. The light propagating through the living tissue such as the subcutaneous fat tissue 21 and the muscle tissue 22 is diffused and reaches the photodetector 4 along the optical path 3, for example.
[0022]
Since the amount of light reaching the muscular tissue 22 varies greatly depending on the size of the subcutaneous fat thickness, the subcutaneous fat thickness calculation means 5 is used to calculate the subcutaneous fat thickness by measuring the detection value of the photodetector 4. be able to.
[0023]
The measuring position discriminating means for discriminating the measuring position of the subcutaneous fat thickness is composed of a rotating roller 6 which is a roller section and a rotational speed measuring means 7. The rotating roller 6 is rotated while being in close contact with the living body 2, and the rotating speed and rotating direction are measured using the rotating speed measuring means 7, thereby calculating the moving direction and moving distance of the subcutaneous fat thickness measuring device main body 8. Thus, position information for measuring the subcutaneous fat thickness can be obtained.
[0024]
The subcutaneous fat thickness calculation result and position information are transmitted to the subcutaneous fat thickness distribution calculating means 23 from the subcutaneous fat thickness calculating means 5 and the rotation speed measuring means 7 via the cable 9 and calculated by the subcutaneous fat thickness distribution calculating means 23. The calculation result of the subcutaneous fat thickness distribution is transmitted to the display 10 via the cable 9.
[0025]
The rotating roller 6 is brought into close contact with the umbilical portion of the abdomen, the subcutaneous fat thickness measuring device main body 8 is moved along the periphery of the abdomen from the umbilical portion, and the position from the umbilical portion is measured by the rotational speed measuring means 7. FIG. 2 shows the result of detecting the return light from the living body with the photodetector 4 and calculating the subcutaneous fat thickness around the abdomen. It can be seen that the subcutaneous fat thickness changes as the measurement position changes from the umbilicus to the back and again to the umbilicus.
[0026]
Next, a method for displaying the subcutaneous fat thickness distribution in the abdomen using the waist circumference and the subcutaneous fat thickness distribution value will be described.
[0027]
First, the waist circumference is obtained from the number of rotations of the rotating roller 6 when the subcutaneous fat thickness measuring device body 8 is moved along the circumference of the abdomen from the umbilicus.
[0028]
Next, the shape of a person's abdomen is approximated by a substantially circular shape, preferably an elliptical shape. Thereby, a person's abdominal shape can be displayed more realistically. Here, it is preferable to approximate the width in the lateral direction of the waist, that is, the waist width by a function that is larger than the thickness of the front and rear surfaces of the abdomen, that is, the abdomen thickness diameter. As a ratio of the waist width and the abdomen thickness diameter, for example, in the case of a male, 1.22 is used as a standard value, and when the waist circumference is larger than the standard, the value is reduced from the standard value to about 1.15. On the contrary, when it is thin, it is preferable to make it larger than the standard value, for example, a value of about 1.3. On the other hand, in the case of women, 1.08 is used as the standard value, and when the waist circumference is larger than the standard, it is decreased from the standard value and 1.06 is used. Conversely, when the waist circumference is small, It is preferable to use 1.15, increasing from the standard value. Here, considering the age, it is more preferable to prepare the above ratio for each age in advance and use the value.
[0029]
Next, as shown in FIG. 1, an ellipse 11 is drawn at the above ratio. And the subcutaneous fat thickness curve 12 measured on the outer side is drawn. At this time, drawing is performed so that the peripheral length of the subcutaneous fat thickness curve 12 is the same as the waist peripheral length. A portion surrounded by the elliptical shape 11 and the subcutaneous fat thickness curve 12 corresponds to the subcutaneous fat tissue 13. From FIG. 1, it can be seen that the subcutaneous fat thickness distribution around the abdomen is displayed visually in an easily understandable manner.
[0030]
In the above embodiment, the method for drawing the subcutaneous fat thickness curve on the outer side of the elliptical shape has been described. However, the present invention is not limited to this. A subcutaneous fat thickness curve may be drawn.
[0031]
Moreover, although the example which used the rotation roller as a roller part of a measurement position discrimination means and used one rotation number measurement means was demonstrated, it is not limited to this, For example, a spherical thing is used as a roller part, and it rotates. When two number measuring means are used, the moving direction and moving distance of the subcutaneous fat thickness measuring device main body can be measured two-dimensionally.
[0032]
Also, using a solid-state imaging device as a measurement position discriminating means, thereby imaging a living body, extracting feature points on the surface of the living body such as pores and blood vessels, and moving the subcutaneous fat thickness measuring instrument main body The measurement position may be calculated by calculating the movement distance. At this time, it is preferable to use a solid-state imaging device as a measurement position discriminating means as a photodetector because it is useful for reducing the number of parts and reducing the size of the apparatus.
[0033]
Further, although the case where the light source 1 is in close contact with the living body has been described, the present invention is not limited to this, and a laser light source may be installed at a position away from the living body and the spot light relatively focused on the living body may be irradiated.
[0034]
Further, although the case where the photodetector 4 is in close contact with the living body has been described, the present invention is not limited to this. For example, a solid-state imaging device is placed away from the living body, diffuse reflected light from the skin surface is detected, and subcutaneous fat thickness May be calculated.
[0035]
【The invention's effect】
According to the present invention, it is possible to easily determine the measurement position of the subcutaneous fat thickness, and to measure the subcutaneous fat thickness distribution by taking the correspondence between the measurement position and the subcutaneous fat thickness. it is possible to provide a thickness measuring equipment.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a subcutaneous fat thickness measuring apparatus according to an embodiment of the present invention. FIG. 2 is a graph showing the relationship between subcutaneous fat thickness and measurement position measured using the subcutaneous fat thickness measuring apparatus. Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Light source 2 Living body 3 Optical path 4 Optical detector 5 Subcutaneous fat thickness calculation means 6 Rotation roller 7 Rotation number measurement means 8 Subcutaneous fat thickness measuring device main body 9 Cable 10 Display 11 Ellipse shape 12 Subcutaneous fat thickness curves 13, 21 Subcutaneous fat Tissue 20 Skin tissue 22 Muscle tissue 23 Subcutaneous fat thickness distribution calculating means

Claims

A subcutaneous fat thickness measurement apparatus for measuring the subcutaneous fat thickness of a living body is subject light source for irradiating light to the subject, the light detection for detecting light propagated through the inside of the subject consists of a solid-state imaging device And a subcutaneous fat thickness measuring means having a subcutaneous fat thickness calculating means for calculating a subcutaneous fat thickness based on a detection result of the photodetector, and a feature point on the surface of the living body from a biological image captured by the solid-state imaging device And a measurement position determining means for determining the measurement position of the subcutaneous fat thickness in the subject by calculating the movement distance of the extracted feature points .

Further, the subcutaneous fat thickness distribution of the subject is calculated based on the subcutaneous fat thickness of the subject measured by the subcutaneous fat thickness measuring means and the measurement position of the subcutaneous fat thickness in the subject determined by the measurement position discriminating means. The subcutaneous fat thickness measuring device according to claim 1, further comprising a subcutaneous fat thickness distribution calculating means.

And further comprising a subcutaneous fat thickness display means for displaying the subcutaneous fat thickness of the subject measured by the subcutaneous fat thickness measuring means and / or the subcutaneous fat thickness distribution of the subject calculated by the subcutaneous fat thickness distribution calculating means, 3. The subcutaneous fat thickness measuring apparatus according to claim 2, wherein the thickness display means and the subcutaneous fat thickness measuring means or / and the subcutaneous fat thickness distribution calculating means are connected by wire or wirelessly.

The subcutaneous fat thickness display means displays the substantially circular shape and the subcutaneous fat thickness distribution of the abdomen of the subject calculated by the subcutaneous fat thickness distribution calculation means on the inside or outside of the substantially circular shape , The subcutaneous fat thickness measuring apparatus according to claim 3 .

5. The subcutaneous fat thickness measuring apparatus according to claim 4 , wherein the substantially circular shape is an ellipse .

And means for inputting the subcutaneous fat thickness data, and characterized in that the subcutaneous fat thickness display means has a function of displaying subcutaneous fat thickness and subcutaneous fat thickness of the subject measured by the measuring means and the subcutaneous fat thickness data at the same time The subcutaneous fat thickness measuring apparatus according to any one of claims 3 to 5 .