KR20100133921A - Jaw orthopedic bone mineral density measurement device - Google Patents

Jaw orthopedic bone mineral density measurement device Download PDF

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KR20100133921A
KR20100133921A KR1020100056239A KR20100056239A KR20100133921A KR 20100133921 A KR20100133921 A KR 20100133921A KR 1020100056239 A KR1020100056239 A KR 1020100056239A KR 20100056239 A KR20100056239 A KR 20100056239A KR 20100133921 A KR20100133921 A KR 20100133921A
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mineral density
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김대진
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주식회사씨케어코리아
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    • A—HUMAN NECESSITIES
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    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/505—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of bone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units

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Abstract

PURPOSE: A jaw bone mineral density measurement device using a computed tomography method is provided to precisely verify whether an implant procedure is capable of implementing by measuring the bone mineral density of jaw-bone. CONSTITUTION: An X-ray generator(110) radiates X-ray toward the jaw-bone of a human body. The X-ray generator radiates X-rays with different energies. A scan driving part(140) scans the X-ray generator rotating by a controlling signal. An X-ray detector(130) detects X-rays transmitted through the jaw-bone. A drive controlling part(150) controls the drive of the scan driving part and the X-ray generator. An analyzer(160) controls the drive controlling part. The analyzer measures the bone mineral density of the jaw-bone.

Description

ＣＴ방식에 의한 악골의 골밀도 측정장치{Jaw Orthopedic Bone Mineral Density Measurement Device} Jaw Orthopedic Bone Mineral Density Measurement Device}

본 발명은 CT방식에의한 악골의 골밀도 측정장치에 관한 것으로서, 상세하게는 에너지가 상호 다른 이중 방사선을 이용하여 악골의 골밀도를 측정하는 장치에 관한 것이다.The present invention relates to a device for measuring the bone density of the jaw bone by the CT method, and more particularly, to an apparatus for measuring the bone density of the jaw bone using dual radiation having different energy.

최근, 치아가 손상된 경우 손상된 치아를 제거하고, 제거된 치아 위치의 악골에 임플란트를 식립하는 기술이 널리 활용되고 있다.Recently, a technique of removing a damaged tooth when the tooth is damaged and placing the implant in the jaw of the removed tooth position has been widely used.

그런데, 악골의 골밀도에 따라 임플란트의 식재가 불가능한 경우가 있어 골밀도에 대한 정확한 측정이 매우 중요하다.By the way, according to the bone density of the jaw bone implants may not be possible, so accurate measurement of bone density is very important.

본 발명은 상기와 같은 요구사항을 해결하기 위하여 창안된 것으로서, 악골의 골밀도를 방사선을 이용하여 측정할 수 있는 CT방식에 의한 악골의 골밀도 측정장치를 제공하는데 그 목적이 있다.The present invention has been made to solve the above requirements, and an object of the present invention is to provide a bone density measurement apparatus of jaw bone by CT method which can measure bone density of jaw bone using radiation.

상기의 목적을 달성하기 위하여 본 발명에 따른 CT방식에 의한 악골의 골밀도 측정장치는 측정대상 인체의 악골을 향해 엑스선을 출사하되 상호 다른 에너지를 갖는 엑스선을 출사할 수 있도록 된 엑스선 발생기와; 상기 엑스선 발생기를 제어신호에 따라 회전시키면서 스캔하는 스캔구동부와; 상기 엑스선 발생기에서 출사되어 상기 악골을 투과한 엑스선을 검출하는 엑스선 검출기와; 상기 스캔구동부 및 엑스선 발생기의 구동을 제어하는 구동제어부와; 상기 구동제어부를 제어하며 상기 엑스선 검출기에서 출력되는 정보를 기록하고, 기록된 정보로부터 상기 악골의 골밀도를 측정하여 표시부를 통해 표시처리하는 분석처리부;를 구비한다.In order to achieve the above object, the bone density measurement apparatus of the jaw bone by the CT method according to the present invention comprises: an X-ray generator which emits X-rays toward the jawbone of a human body to be measured but emits X-rays having different energies; A scan driver scanning the X-ray generator while rotating the X-ray generator according to a control signal; An X-ray detector for detecting X-rays emitted from the X-ray generator and penetrating the jawbone; A driving controller controlling driving of the scan driver and the X-ray generator; And an analysis processing unit which controls the driving control unit, records information output from the X-ray detector, measures the bone density of the jawbone from the recorded information, and displays the information through the display unit.

본 발명에 따른 CT방식에 의한 악골의 골밀도 측정장치에 의하면, 악골에 대한 골밀도를 측정하여 제공할 수 있어 임플란트 시술 가능 여부에 대한 진단을 정밀하게 할 수 있다. According to the apparatus for measuring the bone density of the jaw bone by the CT method according to the present invention, the bone density of the jaw bone can be measured and provided, thereby making it possible to precisely diagnose whether implantation is possible.

도 1은 본 발명에 따른 CT방식에 의한 악골의 골밀도 측정장치를 나타내보인 블록도이다.1 is a block diagram showing an apparatus for measuring bone density of jaw bone by CT method according to the present invention.

이하, 첨부된 도면을 참조하면서 본 발명의 바람직한 실시 예에 따른 CT방식에 의한 악골의 골밀도 측정장치를 더욱 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in more detail the bone density measurement apparatus of the jaw bone by the CT method according to an embodiment of the present invention.

도 1은 본 발명에 따른 CT방식에 의한 악골의 골밀도 측정장치를 나타내보인 블록도이다.1 is a block diagram showing an apparatus for measuring bone density of jaw bone by CT method according to the present invention.

도 1을 참조하면, 악골의 골밀도 측정장치(100)는 엑스선 발생기(110), 엑스선 검출기(130), 스캔구동부(140), 구동제어부(150), 분석처리부(160), 입력부(170) 및 표시부(180)를 구비한다.Referring to FIG. 1, the bone density measurement apparatus 100 of the jaw bone includes an X-ray generator 110, an X-ray detector 130, a scan driver 140, a drive controller 150, an analysis processor 160, an input unit 170, and the like. The display unit 180 is provided.

엑스선 발생기(110)는 측정대상 인체의 악골을 향해 엑스선을 출사하되 상호 다른 에너지를 갖는 엑스선을 구동제어부(150)에 제어되어 선택적으로 출사할 수 있도록 되어 있다.The X-ray generator 110 emits X-rays toward the jawbone of the human body to be measured, but X-rays having different energies are controlled by the driving controller 150 to selectively emit the X-rays.

엑스선 검출기(130)는 엑스선 발생기(110)에서 출사되어 악골을 투과한 엑스선을 검출하여 분석처리부(160)로 제공한다.The X-ray detector 130 detects X-rays emitted from the X-ray generator 110 and penetrates the jaw bone and provides them to the analysis processor 160.

바람직하게는 엑스선 검출기(130)는 엑스선 발생기(110)에서 출사된 엑스선에 감응하여 형광물질을 방사하는 리셉터와 리셉터에서 출사되는 광을 수신하는 CCD어레이로된 CR검출기가 적용된다.Preferably, the X-ray detector 130 is applied to a CR detector comprising a receptor for emitting fluorescent material in response to X-rays emitted from the X-ray generator 110 and a CCD array for receiving light emitted from the receptor.

스캔구동부(140)는 엑스선 발생기(110)를 제어신호에 따라 스캔한다. 스캔구동부(140)는 스캔시 엑스선 검출부(130)도 제1 및 제2엑스선 발생기(110)(120)에 대향되는 위치에 위치되도록 대응되게 회전되도록 제어한다.The scan driver 140 scans the X-ray generator 110 according to the control signal. The scan driver 140 controls the X-ray detector 130 to rotate correspondingly to be positioned at positions opposite to the first and second X-ray generators 110 and 120 during the scan.

구동제어부(150)는 스캔구동부(140) 및 엑스선 발생기(110)의 구동을 제어한다.The driving controller 150 controls the driving of the scan driver 140 and the X-ray generator 110.

분석처리부(160)는 구동제어부(150)를 제어하며 엑스선 검출기(130)에서 출력되는 정보를 기록하고, 기록된 정보로부터 악골의 골밀도를 측정하여 표시부(180)를 통해 표시처리한다.The analysis processor 160 controls the driving controller 150 to record the information output from the X-ray detector 130, measure the bone density of the jaw bone from the recorded information, and display the information through the display unit 180.

입력부(170)는 스캔각도범위, 스캔각도 간격 등 지원되는 설정조건을 입력할 수 있도록 되어 있다.The input unit 170 is configured to input supported setting conditions such as scan angle range and scan angle interval.

이러한 악골의 골밀도 측정장치(100)에 의한 골밀도 측정과정을 이하에서 설명한다.The bone density measurement process by the bone density measuring apparatus 100 of the jawbone will be described below.

먼저, 측정대상 악골에 에너지가 상호 다른 엑스선을 스캔각도 범위에 따라 각각 스캔하면서 조사한다. 스캔각도는 1°간격으로 270°범위까지 스캔한다.First, the X-rays of different energies are scanned while scanning each of the jaw bones according to the scan angle range. Scan angles are scanned in the 270 ° range at 1 ° intervals.

다음은 악골을 투과하여 검출된 엑스선 검출정보로부터 악골의 골밀도를 산출한다.Next, the bone density of the jaw is calculated from the X-ray detection information detected through the jaw.

즉, 270°범위까지 스캔하여 얻은 단면의 이미지를 정수값에 의한 CT(Computerrized Tomography)넘버(Number)를 얻고, CT의 voxel을 값으로 치환한 다음 밀도값을 산출한다. 이 때 엑스선 검출기(130)에서 검출된 영상의 단면이미지를 재구성하여 수많은 작은 블록을 복셀(voxel)이라고 하며, 복셀은 엑스선 에너지의 감약과 비례한 값을 갖는다. 복셀의 두께는 측정 가능한 값이므로 하나의 복셀의 선감약계수는 지수감약공식을 이용하여 구할 수 있다.That is, a CT (Computerized Tomography) number (Number) based on an integer value is obtained from an image of a cross section obtained by scanning to a range of 270 °, the voxel of the CT is replaced with a value, and then a density value is calculated. At this time, a number of small blocks are called voxels by reconstructing a cross-sectional image of the image detected by the X-ray detector 130, and the voxels have a value proportional to the reduction of X-ray energy. Since the thickness of the voxel is a measurable value, the linear reduction coefficient of one voxel can be obtained using the exponential reduction formula.

또한, 스캔방향을 1°간격으로 하여 방향이 상호 다른 270개의 추가 정보를 가지고 있어 회전공식과 방정식을 이용하여 복셀의 선감약계수를 구하면 된다.In addition, the scan direction has 270 additional information with different directions, with the scan direction spaced at 1 °, and the line loss coefficient of the voxel can be obtained by using the rotation formula and equation.

이러한 정보를 데이터 베이스화하고, 구축된 데이터 베이스와 촬영한 악골의 골질과 골량을 비교하여 골밀도를 산출한다.This information is made into a database, and bone density is calculated by comparing the constructed database with the bone quality and bone mass of the taken jaw.

즉, 골밀도(BMD)는 BMD=BMC/Area로 표현할 수 있고, BMC=KH-L이며, 여기서, K=(Htisnum- Hairnum)-(Ltisnum -Lairnum)이며, tisnum은 검사대상 조직(tisue)의 CT 넘버이고, airnum은 공기에 대한 CT 넘버이다.In other words, BMD can be expressed as BMD = BMC / Area, BMC = KH-L, where K = (Htisnum-Hairnum)-(Ltisnum-Lairnum), and tisnum is the target tissue. CT number, airnum is the CT number for the air.

110: 엑스선 발생기, 130: 엑스선 검출기110: X-ray generator, 130: X-ray detector

Claims (1)

측정대상 인체의 악골을 향해 엑스선을 출사하되 상호 다른 에너지를 갖는 엑스선을 출사할 수 있도록 된 엑스선 발생기와;
상기 엑스선 발생기를 제어신호에 따라 회전시키면서 스캔하는 스캔구동부와;
상기 엑스선 발생기에서 출사되어 상기 악골을 투과한 엑스선을 검출하는 엑스선 검출기와;
상기 스캔구동부 및 엑스선 발생기의 구동을 제어하는 구동제어부와;
상기 구동제어부를 제어하며 상기 엑스선 검출기에서 출력되는 정보를 기록하고, 기록된 정보로부터 상기 악골의 골밀도를 측정하여 표시부를 통해 표시처리하는 분석처리부;를 구비하는 것을 특징으로 하는 CT방식에 의한 악골의 골밀도 측정장치.An X-ray generator configured to emit X-rays toward the jaw of the measurement target body and to emit X-rays having different energies;
A scan driver scanning the X-ray generator while rotating the X-ray generator according to a control signal;
An X-ray detector for detecting X-rays emitted from the X-ray generator and penetrating the jawbone;
A driving controller controlling driving of the scan driver and the X-ray generator;
And an analysis processing unit for controlling the driving control unit, recording the information output from the X-ray detector, measuring the bone density of the jawbone from the recorded information, and displaying the information through the display unit. Bone density measuring device.
KR1020100056239A 2009-06-12 2010-06-14 Jaw Orthopedic Bone Mineral Density Measurement Device KR101271255B1 (en)

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KR20180038319A (en) 2016-10-06 2018-04-16 주식회사 메가젠임플란트 Mobile iinked implant diagnosis system
KR20190018913A (en) * 2017-08-16 2019-02-26 서울대학교산학협력단 System and method for measuring bone mineral density
KR20190074098A (en) 2017-12-19 2019-06-27 주식회사 키스톤 Dental implant procedure guide device, dental implant procedure guide device manufacturing system and methode the same
KR20190074097A (en) 2017-12-19 2019-06-27 주식회사 키스톤 Image Generation System for implant Diagnosis and image Generation methode the same

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KR20160061722A (en) 2014-11-24 2016-06-01 차상민 Ultrasonic tooth bone mineral density system

Family Cites Families (4)

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CA2184237A1 (en) * 1995-09-08 1997-03-09 Jay A. Stein X-ray bone densitometry
JP3974842B2 (en) * 2002-10-30 2007-09-12 アロカ株式会社 X-ray bone density measuring device
KR100721007B1 (en) * 2004-11-17 2007-05-23 주식회사 메디슨엑스레이 X-ray probe apparatus
JP4499593B2 (en) * 2005-03-28 2010-07-07 アロカ株式会社 X-ray bone density measuring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180038319A (en) 2016-10-06 2018-04-16 주식회사 메가젠임플란트 Mobile iinked implant diagnosis system
KR20190018913A (en) * 2017-08-16 2019-02-26 서울대학교산학협력단 System and method for measuring bone mineral density
KR20190074098A (en) 2017-12-19 2019-06-27 주식회사 키스톤 Dental implant procedure guide device, dental implant procedure guide device manufacturing system and methode the same
KR20190074097A (en) 2017-12-19 2019-06-27 주식회사 키스톤 Image Generation System for implant Diagnosis and image Generation methode the same

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