JP4247481B2 - Dental panoramic X-ray equipment - Google Patents
Dental panoramic X-ray equipment Download PDFInfo
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- JP4247481B2 JP4247481B2 JP2004070300A JP2004070300A JP4247481B2 JP 4247481 B2 JP4247481 B2 JP 4247481B2 JP 2004070300 A JP2004070300 A JP 2004070300A JP 2004070300 A JP2004070300 A JP 2004070300A JP 4247481 B2 JP4247481 B2 JP 4247481B2
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- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 238000005259 measurement Methods 0.000 claims description 11
- 210000001738 temporomandibular joint Anatomy 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 claims description 8
- 230000036346 tooth eruption Effects 0.000 claims description 8
- 210000004513 dentition Anatomy 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 210000001847 jaw Anatomy 0.000 description 2
- 210000002455 dental arch Anatomy 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Description
本発明は、歯科用パノラマＸ線撮影装置に関する。 The present invention relates to a dental panoramic X-ray imaging apparatus.
さらに詳しくは、予め歯列に沿って拡大率が変化する部位にスチールボールを埋め込んだ咬合用バイトピースを被験者と共に撮影し、その画像データ上のスチールボールの間隔を測定し表示する手段を備え、あらゆる部位の距離をモニター上で測定して表示する歯科用パノラマＸ線撮影装置に関する。 More specifically, it is provided with means for photographing the bite piece for occlusion in which the steel ball is embedded in the site where the enlargement ratio changes in advance along the dentition together with the subject, and measuring and displaying the interval of the steel ball on the image data, The present invention relates to a dental panoramic X-ray imaging apparatus that measures and displays the distance of any part on a monitor.
従来、歯科用パノラマＸ線撮影装置は、X線発生部とＸ線受像部を、被検者の頭部を挟
むように対向して配置した回転アームを有し、この回転アームが、それぞれの装置固有に設定された顎関節を含む仮想歯列弓軌道に沿って回転移動することにより被検者の歯顎領域の撮影を行うが、機構上、大別すると以下の２種類に分けられる。前者は、撮影方式として回転アームの回転中心が前記仮想歯列弓軌道上を回転移動しながら被検者の歯顎領域の撮影を行う方式と、後者は、前記回転アームの回転中心が前記仮想歯列弓軌道上からはずれた位置を時々刻々と回転移動しながら被検者の歯顎領域の撮影を行う方式であり、一般的に前者は、機構的に複雑となり製造コストが高い反面、複雑な制御が可能という利点を有しており、加えて、撮影時に幾何学的に前記仮想歯列弓上を回転アームの回転中心が回転移動するため拡大率が一定となることが知られているのに対して、後者は、機構的に比較的簡便で且つ、従って製造コストが安くできる反面、拡大率が撮影開始位置の顎関節領域より、臼歯部、前歯部への移行に従って徐々に拡大率が変化することが知られているが、依然普及機としての地位は揺るぎのない状況で、近年はマイコン制御の進化によってより複雑な制御も可能となってきている現状にある。
一方撮影現場にあっては、装置のデジタル化が進みフィルムレスの時代に突入し、パーソナルコンピューターを利用した各種の管理操作及び、モニター画面上での被検者に対するインフォームドコンセント等を踏まえた中で、モニター画面上での簡易的な位置の計測の必要性が求められるようになった。
従来この様な要望に対して、前記した後者の拡大率が変化する装置の場合は、計測が必要な部位毎にスチールボールを埋め込んだ咬合用バイトピースを被験者と共に撮影して、その画像データ上でスチールボール間の寸法を測定し基準値と比較して補正を行っていた。必要な部位の距離を測定するためには、その都度、実測値を基準値と比較して計算することにより真の距離を得ていた。
Conventionally, a dental panoramic X-ray imaging apparatus has a rotary arm in which an X-ray generation unit and an X-ray image receiving unit are arranged facing each other so as to sandwich the head of a subject. The subject's dental jaw region is imaged by rotating and moving along a virtual dental arch trajectory including a temporomandibular joint set uniquely for the apparatus. The mechanism is roughly classified into the following two types. The former is an imaging method in which the rotation center of the rotary arm rotates and moves on the virtual dental arch trajectory while taking an image of the subject's tooth region. This is a method of taking an image of the subject's tooth and jaw region while rotating and moving from position to position on the dental arch trajectory. The former is generally complicated and mechanically expensive, but complicated. In addition, it is known that the enlargement ratio is constant because the rotation center of the rotary arm rotates geometrically on the virtual dental arch at the time of photographing. On the other hand, the latter is relatively simple in terms of mechanism and thus can be manufactured at a low cost, but the enlargement ratio gradually increases as the transition from the temporomandibular joint region at the imaging start position to the molar part and the anterior tooth part. Is known to change, but still Position as 及機 in a situation without the unwavering, in recent years is in the current situation where it has become possible even more complex controlled by the evolution of the microcomputer control.
On the other hand, at the shooting site, the digitalization of the device has progressed and the filmless era has been entered, taking into account various management operations using personal computers and informed consent for subjects on the monitor screen. Therefore, there is a need for simple position measurement on the monitor screen.
Conventionally, in response to such a request, in the case of the latter device in which the enlargement ratio changes, an occlusal bite piece in which a steel ball is embedded in each part that needs to be measured is photographed together with the subject, and the image data Measured the dimensions between steel balls and compared them with the reference values for correction. In order to measure the distance of a necessary part, a true distance was obtained by comparing the measured value with the reference value each time.
本発明は、以上の状況を鑑みなされたもので、その解決しようとする課題は、以下の通りである。拡大率が前歯部、臼歯部、顎関節領域で変化するこの種の歯科用パノラマＸ線装置において、例えば、顎関節領域の拡大率がおよそ１．１９倍、また前歯部領域の拡大率がおよそ１．３２倍と、およそ０．１３倍変化することが知られている。必要な部位の距離を測定するためには、計測が必要な部位に、スチールボールを埋め込んだ咬合用バイトピースを被験者と共に撮影しなければならない。また、その部位の距離は、その画像データ上でスチールボール間の寸法を測定して基準値と比較して補正を行い、その補正値から計算して実際の距離を得なければならない。計測部位が変われば、再びその部位にスチールボールを埋め込んだ咬合用バイトピースを被験者と共に撮影して、スチールボール間の寸法を測定し基準値と比較して補正を行い計算して実際の距離を得ることになる。 The present invention has been made in view of the above situation, and the problems to be solved are as follows. In this type of dental panoramic X-ray apparatus in which the enlargement ratio changes in the anterior teeth, molars, and temporomandibular joint areas, for example, the enlargement ratio of the temporomandibular joint area is approximately 1.19 times, and the enlargement ratio of the anterior tooth area is approximately It is known that the ratio changes by 1.32 times and approximately 0.13 times. In order to measure the distance of a necessary part, an occlusal bite piece in which a steel ball is embedded must be photographed together with a subject in a part requiring measurement. Further, the distance between the parts must be calculated by measuring the dimension between the steel balls on the image data and comparing it with the reference value, and calculating from the correction value to obtain the actual distance. If the measurement part changes, the occlusal bite piece with the steel ball embedded in the part is again photographed with the subject, the dimension between the steel balls is measured, compared with the reference value, corrected and calculated to calculate the actual distance. Will get.
拡大率が前歯部、臼歯部、顎関節領域で変化する歯科用パノラマＸ線装置において、予め歯列に沿って拡大率が変化する部位にスチールボールを埋め込んだ咬合用バイトピースを被験者と共に撮影して、咬合用バイトピースのスチールボールが撮影された画像データを保存する記憶保存手段と、保存された画像データを表示する表示手段と、表示された画像データ上で咬合用バイトピースのスチールボールの間隔をモニター上で測定する測定手段と、測定値とスチールボールの基準値データと比較して補正する測定値補正手段と、測定値補正手段により得られた測定値を表示する測定値表示手段から構成され、あらゆる部位の距離をモニター上で測定し表示できることを特徴とする。 In a dental panoramic X-ray device in which the enlargement ratio changes in the front tooth part, molar part, and temporomandibular joint area, a bite piece for occlusion with a steel ball embedded in the site where the enlargement ratio changes in advance along the dentition is photographed with the subject. Storage means for storing the image data obtained by photographing the occlusal bite piece steel ball, display means for displaying the saved image data, and the occlusal bite piece steel ball on the displayed image data. From the measuring means for measuring the interval on the monitor, the measured value correcting means for correcting by comparing the measured value with the reference value data of the steel ball, and the measured value display means for displaying the measured value obtained by the measured value correcting means It is constructed, and the distance of every part can be measured and displayed on a monitor.
拡大率が前歯部、臼歯部、顎関節領域で変化する歯科用パノラマＸ線装置において、予め歯列に沿って拡大率が変化する部位にスチールボールを埋め込んだ咬合用バイトピースを用いて、被験者と共に撮影することにより１回の撮影で前歯部、臼歯部、顎関節領域の全域に渡るあらゆる部位の距離をモニター上で測定し表示できる。 In a dental panoramic X-ray apparatus in which the enlargement ratio changes in the front tooth part, molar part, and temporomandibular joint area, the subject uses a bite piece for occlusion in which a steel ball is embedded in a site where the enlargement ratio changes in advance along the dentition. By photographing together with this, it is possible to measure and display the distances of all parts over the entire region of the front tooth portion, molar portion, and temporomandibular joint region on one monitor.
拡大率が前歯部、臼歯部、顎関節領域で変化する歯科用パノラマＸ線装置において、予め歯列に沿って拡大率が変化する部位にスチールボールを埋め込んだ咬合用バイトピースを被験者と共に撮影し咬合用バイトピースのスチールボールが撮影された画像データを保存する記憶保存手段と、保存された画像データを表示する表示手段と、表示された画像データ上で咬合用バイトピースのスチールボールの間隔をモニター上で測定する測定手段と、測定された測定値とスチールボールの基準値データと比較する測定値補正手段と、測定値補正手段により得られた測定値を表示する測定値表示手段から構成され、あらゆる部位の距離をモニター上で測定し表示できる。 In a dental panoramic X-ray device in which the enlargement ratio changes in the front tooth part, molar part, and temporomandibular joint area, a bite piece for occlusion with a steel ball embedded in the site where the enlargement ratio changes in advance along the dentition is photographed with the subject. Memory storage means for storing the image data obtained by photographing the occlusal bite piece steel balls, display means for displaying the stored image data, and the interval between the steel balls of the occlusal bite piece on the displayed image data It consists of measuring means that measures on the monitor, measured value correction means that compares the measured values with the steel ball reference value data, and measured value display means that displays the measured values obtained by the measured value correcting means. , The distance of any part can be measured and displayed on the monitor.
以下実施例に基づいて説明する。図１は、本発明に係る咬合用バイトピースの１例であり、図２は、咬合用バイトピースをパノラマＸ線撮影装置に装着した１例である。また図３は、被験者と共に咬合用バイトピースを撮影したパノラマＸ線画像の１例である。図１に示す咬合用バイトピース１は、スチールボール２を仮想歯列上の拡大率変換点に埋め込み配列して構成されており、この咬合用バイトピース１を図２のようにパノラマＸ線撮影装置３に装着して、これを被験者が咬合した状態で、被験者と共に撮影して得られたパノラマＸ線画像上のスチールボール５をマウスにてクリックすることにより、そのパノラマＸ線画像上のスチールボール５を通る垂線が表示される。パノラマＸ線画像上のスチールボール５間の距離を測定するには、その垂線をマウスにてクリックすることにより基準値と比較され補正された距離がモニター上に表示される。また、パノラマＸ線画像上の各スチールボール間の距離の測定でもそのスチールボールを通る垂線をマウスにてクリックすることにより基準値と比較され補正された距離がモニター上に表示される。パノラマＸ線画像上の目的とする部位の距離の測定は、測定したい部位の先端をマウスにてクリックし、次に、その部位の末端をマウスにてクリックすることにより、その目的部位の補正された距離がモニター上に表示される。
Hereinafter, description will be made based on examples. FIG. 1 is an example of an occlusal bite piece according to the present invention, and FIG. 2 is an example of mounting an occlusal bite piece on a panoramic X-ray imaging apparatus. FIG. 3 is an example of a panoramic X-ray image obtained by photographing a bite piece for biting together with a subject. The
１ 咬合用バイトピース
２ スチールボール
３ パノラマＸ線撮影装置
４ パノラマＸ線画像
５ パノラマＸ線画像上のスチールボール
1 Biting piece for
5 Steel balls on panoramic X-ray images
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| JP2004070300A JP4247481B2 (en) | 2004-03-12 | 2004-03-12 | Dental panoramic X-ray equipment |
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| JP2004070300A JP4247481B2 (en) | 2004-03-12 | 2004-03-12 | Dental panoramic X-ray equipment |
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| JP2005253727A JP2005253727A (en) | 2005-09-22 |
| JP4247481B2 true JP4247481B2 (en) | 2009-04-02 |
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| US20090123892A1 (en) * | 2004-09-24 | 2009-05-14 | Cat Corporation | Human Body Information Extraction Device, Human Body Imaging Information Reference Plane Conversion Method, and Cross Section Information Detection Device |
| JP4844886B2 (en) * | 2005-10-21 | 2011-12-28 | 株式会社 アクシオン・ジャパン | Panoramic image photographing apparatus and panoramic image photographing method |
| US9320569B2 (en) | 2006-11-14 | 2016-04-26 | General Electric Company | Systems and methods for implant distance measurement |
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