JP2005058260A - Bone age meter - Google Patents

Bone age meter Download PDF

Info

Publication number
JP2005058260A
JP2005058260A JP2003207229A JP2003207229A JP2005058260A JP 2005058260 A JP2005058260 A JP 2005058260A JP 2003207229 A JP2003207229 A JP 2003207229A JP 2003207229 A JP2003207229 A JP 2003207229A JP 2005058260 A JP2005058260 A JP 2005058260A
Authority
JP
Japan
Prior art keywords
bone age
bone
trabecular
measurement
age
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003207229A
Other languages
Japanese (ja)
Inventor
Kazuyuki Matsui
和幸 松井
Koji Azuma
光司 東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sensa Corp
Original Assignee
Sensa Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sensa Corp filed Critical Sensa Corp
Priority to JP2003207229A priority Critical patent/JP2005058260A/en
Publication of JP2005058260A publication Critical patent/JP2005058260A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of measuring a bone age simply and easily understandably by a subject, small in size to be integrated with a conventional device and without causing any measurement error. <P>SOLUTION: A measured result (BAR) is plotted on the graph of the BAR and ages, and the bone age is obtained by comparing the measured result with the graph, thereby making the measured result easily understandable by the subject and facilitating the measurement only by the input operation of a key board. The meter is provided with a computer body 1 incorporated with an evaluation program, a display screen 2, a printer 3, the keyboard 4 for the input, a foot base 5 for mounting the foot of the subject, probes 6a and 6b, and balloons 7a and 7b connected to the probes. The meter is downsized by integrating a measurement part in which a probe interval is fixed. Further, the probe interval is fixed constant without adopting a structure in which the probe interval is fixed in conventional mainstream, thereby preventing the occurrence of the measurement error caused by the variation in the probe interval. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【産業上の利用分野】
本発明は、超音波計測によって、骨年齢を評価することができる装置に関するものである。
【0002】
【従来の技術】
従来の超音波を送波し透過伝播速度を求め、骨密度を評価する装置には、例えば、特開平10−234729号、特開2000−051212号などが提案されている。しかし、測定結果が骨量や骨密度では、被検者に分かりにくい問題があった。また、装置が大きいものや、装置の各部が別々になっていて持ち運びや移動に不便であった。
【0003】
また、超音波を利用して骨密度を評価する装置において、従来の装置では、特開平09−154842号や特開2000−060852号のように、スライドレールやラック機構などにより、プローブ間が変動する要因が多い構造であったため、プローブ間隔が変動した際、測定ミスが発生するという問題があった。
【0004】
発明人等は超音波を利用して、被検者の骨内部の弾性係数を求めることで、その強度(降伏強度)を推定し、力学計算を用いて、超音波による骨粗しょう症の評価方法およびその装置について提案している(特開平10−295693号)。さらには、超音波によって計測を行い、骨塩量を求め、骨質及び骨強度の評価ができる装置についても提案している(特許第3182558号)。
【0005】
【発明が解決しようとする課題】
骨粗しょう症患者およびその治療費は年々増加すると推測されている。しかしながら、骨粗しょう症に対する効果的な治療法はまだないため、早い時期に診断して発見することで、骨量および骨強度の減少を評価し、骨折の発生を予防することが重要となる。
【0006】
被検者にとって、従来の装置で計測して、専門的な用語を見ても、よく分からないことが多い。そこで、被検者が、簡易に測定でき、さらに、測定結果が分かりやすい装置を提供することにある。
【0007】
また、従来は大きな装置や、装置の各部が数個に分かれたものであったため、持ち運ぶ場合や移動させる場合には不便であった。
【0008】
従来の装置では、プローブ間が変動する要因が多い構造をしており、定期的にプローブ間を調整している。例えばプローブ間が変動する要因として、スライドレールやラック機構などの経時的な変化、へたり等によりプローブ間隔が適正な状態にセットされなくなることなどがある。
【0009】
超音波による透過時間の測定が重要なポイントとなる本測定では、プローブが変動する要因の多い従来の構造は測定ミスの発生する大きな一因となる。
【0010】
【課題を解決するための手段】
本発明は、人体に無害である超音波を用いて、被験者の骨内部の情報を計測し、骨年齢で評価できるようにしたものである。具体的には、超音波により骨内部の透過伝播速度を計測して骨梁線密度を、次いで骨梁線密度から骨梁面積率を求める。また別に、予め骨梁面積率と年齢のグラフを作成しておく。ついで、前記グラフと被検者の測定結果(BAR)から、測定結果をプロットすることにより、骨年齢を評価することができるようにしたものである。
【0011】
また、プローブ間隔を固定することで、常時間隔が一定に保たれ、プローブの変動による測定ミスが発生しなくなる。
【0012】
【作用】
測定結果が被検者に分かりやすくなる。また、装置を一体化とし、小型化することにより、持ち運びに便利になる。さらに、超音波によって骨内部を計測し、骨年齢を評価することで、簡易にX線被爆を避けた定期検診としての確立が期待できる。具体的には、骨粗しょう症の進行状態を早い時期に診断して発見することで、骨量および骨強度の減少を評価し、骨折の発生を予防することが可能となる。
【0013】
【実施例】
本発明の実施する骨粗しょう症の進行状態を評価する装置を図面に基づき説明すると、図1において、1は評価プログラムが内蔵されたコンピュータ(CPU)、2は表示画面、3はプリンター、4は入力用のKEYボード、5は患者(被検者)の足をのせる足台、6a、6bはプローブ、7a、7bはバルーンである。
【0014】
図3で示すように、計測部に位置決めされたプローブ6a、6bの表面に接触媒質を塗り込む。ここにバルーン7a、7bを固着することでプローブとバルーンとの間に気泡を無くし超音波が安定に送波するようにし、足の測定部位に接触媒質を塗り込み、超音波が踵骨の測定部にあたるように計測部に足を設置し、表示画面の表示に従い、性別、年齢を入力し計測を行う。また、プローブの間隔一定に固定されているため、簡易に測定を行うことができる。
【0015】
超音波によって計測するに際し、一対の超音波探触子を水平方向に当てて測定部(踵骨)を計測する。前記CPU1では、予め送受信のプローブ間の距離がわかっているので、計測された超音波の透過時間から、超音波が骨内部を透過する伝播速度が算出される。
【0016】
求められた超音波伝播速度から骨梁線密度を算出し、骨梁線密度から骨梁面積率を算出させ、骨梁面積率から図2のグラフより骨年齢を求める。
【0017】
図2は、BARと年齢の関係を表すグラフで、測定結果のBARと被検者の年齢の交差する場所と、グラフとを比較し、骨年齢を評価するためのグラフである。
【0018】
計測が終了すると、表示画面2に、音速、BAR、骨年齢が表示され、さらに、測定結果がプリンター3により印刷される。
【0019】
【発明の効果】
本発明は、以上説明したように構成されているので、以下に記載されるような効果を奏する。
【0020】
超音波によって骨内部を計測し、骨年齢を求めることで、従来よりも、測定結果が、被検者に分かりやすいものとなった。
【0021】
装置が一体化としたことにより、小型なものになり、持ち運びに便利なものとなった。
【0022】
骨年齢を測ることにより、骨粗しょう症の進行状態を早い時期に診断して発見することで、骨折の発生を予防することが可能となる。
【0023】
プローブ間隔を一定に固定することで、プローブ間隔の変動による測定結果の測定ミスが発生しなくなる。
【0024】
また、X線被爆を避けた定期的な検診をすることで、医師や保健婦は患者(被検者)の時間的な健康状態を把握できるようになる。さらに、医師や、保健婦などは、患者(被検者)の骨粗しょう症の進行状態を把握したうえでの、日常・食生活、運動面などに対して的確なアドバイスおよび治療をすることができる効果を奏する。
【図面の簡単な説明】
【図1】骨年齢計の装置の説明図である。
【図2】骨年齢を評価するグラフの説明図である。
【図3】骨年齢計の計測部の説明図である。
【符号の説明】
1 コンピュータ(CPU)
2 表示画面
3 プリンター
4 KEYボード
5 足台
6a、6b プローブ
7a、7b バルーン
[0001]
[Industrial application fields]
The present invention relates to an apparatus capable of evaluating bone age by ultrasonic measurement.
[0002]
[Prior art]
For example, Japanese Patent Application Laid-Open No. 10-234729 and Japanese Patent Application Laid-Open No. 2000-051212 have been proposed as conventional apparatuses for transmitting ultrasonic waves to determine transmission propagation speed and evaluating bone density. However, there is a problem that it is difficult for the subject to understand if the measurement result is bone mass or bone density. In addition, the apparatus is large and each part of the apparatus is separated, which is inconvenient to carry and move.
[0003]
In addition, in an apparatus for evaluating bone density using ultrasonic waves, the conventional apparatus varies between probes due to a slide rail, a rack mechanism, or the like as disclosed in Japanese Patent Laid-Open Nos. 09-154842 and 2000-060852. This structure has many factors that cause measurement errors when the probe interval fluctuates.
[0004]
The inventors use ultrasound to estimate the elastic modulus inside the subject's bone, estimate its strength (yield strength), and use mechanical calculation to evaluate osteoporosis using ultrasound. And an apparatus for the same has been proposed (Japanese Patent Laid-Open No. 10-295893). Furthermore, an apparatus capable of measuring bone mineral content and evaluating bone quality and bone strength by measuring with ultrasound is proposed (Japanese Patent No. 3182558).
[0005]
[Problems to be solved by the invention]
It is estimated that osteoporosis patients and their treatment costs will increase year by year. However, since there is still no effective treatment for osteoporosis, it is important to diagnose and discover at an early stage to evaluate the decrease in bone mass and strength and prevent the occurrence of fractures.
[0006]
In many cases, a subject does not understand well even if he / she measures with a conventional apparatus and looks at technical terms. Accordingly, it is an object of the present invention to provide an apparatus in which a subject can easily perform measurement and can easily understand a measurement result.
[0007]
Conventionally, a large apparatus and each part of the apparatus are divided into several parts, which is inconvenient when carrying or moving.
[0008]
The conventional apparatus has a structure in which there are many factors that vary between probes, and the distance between probes is adjusted periodically. For example, as a factor that varies between probes, there is a case where the probe interval is not set to an appropriate state due to a change with time such as a slide rail or a rack mechanism, or a sag.
[0009]
In this measurement, in which the measurement of the transmission time by ultrasonic waves is an important point, the conventional structure with many factors that cause the probe to fluctuate becomes a major cause of measurement errors.
[0010]
[Means for Solving the Problems]
The present invention measures the information inside the bone of a subject using ultrasonic waves that are harmless to the human body, and enables evaluation based on bone age. Specifically, the transmission propagation velocity inside the bone is measured by ultrasonic waves to determine the trabecular line density, and then the trabecular area ratio is obtained from the trabecular line density. Separately, a graph of trabecular area ratio and age is created in advance. Next, the bone age can be evaluated by plotting the measurement result from the graph and the measurement result (BAR) of the subject.
[0011]
Further, by fixing the probe interval, the interval is always kept constant, and measurement errors due to probe fluctuations do not occur.
[0012]
[Action]
The measurement results are easily understood by the subject. Moreover, it becomes convenient to carry by integrating the device and reducing the size. Furthermore, by measuring the inside of the bone with ultrasound and evaluating the age of the bone, it can be expected to be established as a regular checkup that avoids X-ray exposure easily. More specifically, by diagnosing and discovering the progress of osteoporosis at an early stage, it is possible to evaluate the decrease in bone mass and bone strength and prevent the occurrence of fractures.
[0013]
【Example】
An apparatus for evaluating the progress of osteoporosis performed by the present invention will be described with reference to the drawings. In FIG. 1, 1 is a computer (CPU) in which an evaluation program is built, 2 is a display screen, 3 is a printer, 4 is An input key board, 5 is a footrest on which a patient's (subject) 's foot is placed, 6a and 6b are probes, and 7a and 7b are balloons.
[0014]
As shown in FIG. 3, the contact medium is applied to the surfaces of the probes 6a and 6b positioned in the measurement unit. Balloons 7a and 7b are fixed here to eliminate bubbles between the probe and the balloon so that the ultrasonic waves can be transmitted stably. The contact medium is applied to the measurement site of the foot, and the ultrasonic waves measure the ribs. The feet are placed on the measuring unit so that it touches the part, and according to the display on the display screen, gender and age are input and measurement is performed. In addition, since the probe interval is fixed, measurement can be performed easily.
[0015]
When measuring with an ultrasonic wave, a measurement part (rib) is measured by applying a pair of ultrasonic probes in the horizontal direction. Since the CPU 1 knows the distance between the transmitting and receiving probes in advance, the propagation speed of the ultrasonic wave passing through the bone is calculated from the measured ultrasonic wave transmission time.
[0016]
The trabecular line density is calculated from the obtained ultrasonic propagation velocity, the trabecular area ratio is calculated from the trabecular line density, and the bone age is obtained from the trabecular area ratio from the graph of FIG.
[0017]
FIG. 2 is a graph showing the relationship between BAR and age, and is a graph for evaluating the age of bone by comparing the graph with a place where the BAR of the measurement result and the age of the subject intersect.
[0018]
When the measurement is completed, the sound speed, BAR, and bone age are displayed on the display screen 2, and the measurement result is printed by the printer 3.
[0019]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0020]
By measuring the inside of the bone with ultrasound and obtaining the bone age, the measurement result is easier for the subject to understand than before.
[0021]
By integrating the device, it has become compact and convenient to carry.
[0022]
By measuring bone age, it is possible to prevent the occurrence of fractures by diagnosing and discovering the progress of osteoporosis at an early stage.
[0023]
By fixing the probe interval constant, measurement errors in the measurement result due to fluctuations in the probe interval do not occur.
[0024]
In addition, by performing regular medical examinations that avoid X-ray exposure, doctors and public health nurses can grasp the temporal health of the patient (examinee). In addition, doctors, public health nurses, etc. can give accurate advice and treatment on daily life, dietary habits, exercise, etc. after understanding the progress of osteoporosis in patients (subjects). There is an effect that can be done.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a device for a bone age meter.
FIG. 2 is an explanatory diagram of a graph for evaluating bone age.
FIG. 3 is an explanatory diagram of a measurement unit of a bone age meter.
[Explanation of symbols]
1 Computer (CPU)
2 Display screen 3 Printer 4 KEY board 5 Footrest 6a, 6b Probe 7a, 7b Balloon

Claims (4)

プログラムされたコンピュータによって骨年齢を評価する装置であって、評価プログラムが内蔵されたコンピュータ1と表示画面2、プリンター3、入力用のKEYボード4、被検者の足をのせる足台5、プローブ6a、6bに接続されたバルーン7a、7bを具備し、プローブ間隔を固定にした計測部が一体となり構成する骨年齢計。A device for evaluating bone age by a programmed computer, which includes a computer 1 with an evaluation program and a display screen 2, a printer 3, an input key board 4, a footrest 5 on which a subject's foot is placed, A bone age meter comprising balloons 7a and 7b connected to the probes 6a and 6b, and a measurement unit having a fixed probe interval. プログラムされたコンピュータによって骨年齢を評価する装置であって、超音波により骨内部(踵骨)の透過伝播速度を計測して骨梁線密度を求める手段と、骨梁線密度から骨梁面積率を求める手段と、骨梁面積率から骨年齢を求める手段を含むことを特徴とする骨年齢を超音波計測により評価する装置。A device that evaluates bone age with a programmed computer, and measures the trabecular line density by measuring the transmission velocity inside the bone (radius) using ultrasound, and the trabecular area ratio from the trabecular line density And a means for obtaining bone age from the trabecular area ratio, and an apparatus for evaluating bone age by ultrasonic measurement. コンピュータによって骨年齢を評価するプログラムを記録した記録媒体であって、超音波により骨内部(踵骨)の透過伝播速度を計測して骨梁線密度を算出、次いで,骨梁線密度から骨梁面積率を算出させる。そして、骨梁面積率から骨年齢を求める手段を含むことを特徴とする骨年齢を超音波計測により評価するプログラムを記録した記録媒体。This is a recording medium that records a program for evaluating bone age using a computer, and calculates the trabecular line density by measuring the transmission propagation speed inside the bone (radius) using ultrasound, and then calculates the trabecular line density from the trabecular line density. The area ratio is calculated. And the recording medium which recorded the program which evaluates bone age by ultrasonic measurement characterized by including the means which calculates | requires bone age from a trabecular area ratio. 請求項1の骨年齢計は、プローブ間隔を一定に固定した構造を特徴とする骨年齢計。The bone age meter according to claim 1, wherein the bone age meter has a structure in which a probe interval is fixed.
JP2003207229A 2003-08-12 2003-08-12 Bone age meter Pending JP2005058260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003207229A JP2005058260A (en) 2003-08-12 2003-08-12 Bone age meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003207229A JP2005058260A (en) 2003-08-12 2003-08-12 Bone age meter

Publications (1)

Publication Number Publication Date
JP2005058260A true JP2005058260A (en) 2005-03-10

Family

ID=34363775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003207229A Pending JP2005058260A (en) 2003-08-12 2003-08-12 Bone age meter

Country Status (1)

Country Link
JP (1) JP2005058260A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006346456A (en) * 2005-06-10 2006-12-28 General Electric Co <Ge> Bone density measurement system for public use
WO2008059811A1 (en) * 2006-11-14 2008-05-22 Kagoshima University Osteoporosis progress stage measuring device and osteoporosis progress stage measuring method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006346456A (en) * 2005-06-10 2006-12-28 General Electric Co <Ge> Bone density measurement system for public use
WO2008059811A1 (en) * 2006-11-14 2008-05-22 Kagoshima University Osteoporosis progress stage measuring device and osteoporosis progress stage measuring method
JPWO2008059811A1 (en) * 2006-11-14 2010-03-04 国立大学法人 鹿児島大学 Osteoporosis progress measuring instrument and osteoporosis progress measuring method

Similar Documents

Publication Publication Date Title
US7291109B1 (en) Infant hydration monitor
Kubo et al. Ultrasound elastography for carpal tunnel pressure measurement: A cadaveric validation study
Zhang et al. Noninvasive ultrasound image guided surface wave method for measuring the wave speed and estimating the elasticity of lungs: A feasibility study
JP5061281B2 (en) Knee joint rotation angle measuring device
JP4292247B2 (en) Motion analysis device and use thereof
Massagli et al. Experience with portable ultrasound equipment and measurement of urine volumes: inter-user reliability and factors of patient position
Njeh et al. The use of quantitative ultrasound to monitor fracture healing: a feasibility study using phantoms
US20070016061A1 (en) System for measuring and tracking human body fat
Mak et al. Liver fibrosis assessment using transient elastography guided with real-time B-mode ultrasound imaging: a feasibility study
Xu et al. Ultrasound shear wave elastography for evaluation of diaphragm stiffness in patients with stable COPD: a pilot trial
US20120029355A1 (en) Bone Sonometer
KR20060109932A (en) Method and combination electronic communication and medical diagnostic apparatus for detecting/monitoring neuropathy
Kogo et al. Validity of a new quantitative evaluation method that uses the depth of the surface imprint as an indicator for pitting edema
JP2005058260A (en) Bone age meter
US20210045636A1 (en) Methods for establishing the stiffness of a bone using mechanical response tissue analysis
Shimura et al. Assessment of measurement of children's bone age ultrasonically with Sunlight BonAge
Vlaanderen et al. Low back pain, the stiffness of the sacroiliac joint: a new method using ultrasound
JP2016168209A (en) Joint sound measuring system
JP2007054355A (en) Bone health meter
JP2008206633A (en) Means for evaluating bone density of ossa digitorum and utltrasonic measuring apparatus
Vogl et al. Reliability of phase velocity measurements of flexural acoustic waves in the human tibia in-vivo
Bulbrook et al. Muscle architecture and subcutaneous fat measurements of rectus femoris and vastus lateralis at optimal length aided by a novel ultrasound transducer attachment
Goo et al. A profile of reference data for shear modulus for lower limb muscles in typically developing children
JP2010256307A (en) Hardness measurement apparatus
Razaghi et al. Evaluation of vibration analysis to assess bone mineral density in children