JPH03224547A - Irradiating condition setting method in ct device - Google Patents
Irradiating condition setting method in ct deviceInfo
- Publication number
- JPH03224547A JPH03224547A JP2019043A JP1904390A JPH03224547A JP H03224547 A JPH03224547 A JP H03224547A JP 2019043 A JP2019043 A JP 2019043A JP 1904390 A JP1904390 A JP 1904390A JP H03224547 A JPH03224547 A JP H03224547A
- Authority
- JP
- Japan
- Prior art keywords
- image
- irradiation
- section
- tomographic image
- mpr
- 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
Links
- 238000000034 method Methods 0.000 title claims description 13
- 230000001678 irradiating effect Effects 0.000 title abstract 4
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001959 radiotherapy Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
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- Radiation-Therapy Devices (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、被検体の診断部位について断層像を計測し表
示するＣＴ親装置おいて放射線治療計画を行う時の照射
条件を設定する方法に関し、特に照射目標部位及びその
周辺組織と設定する照射条件との立体的な位置関係を視
認できるＣＴ親装置おける照射条件設定方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method of setting irradiation conditions when performing a radiation treatment plan in a CT master device that measures and displays tomographic images of a diagnostic region of a subject. In particular, the present invention relates to a method for setting irradiation conditions in a CT master device that allows visual confirmation of the three-dimensional positional relationship between the irradiation target region, its surrounding tissues, and the irradiation conditions to be set.
従来のＣＴ親装置おいて放射線治療計画を行う時の照射
条件を設定するには、表示装置の画面に対象患者の情報
としてその照射目標部位を含む一枚の断層像のみを表示
し、この断層像上で照射の方向や照射野（幅）などの照
射条件をキーボード等の入力装置を用いてパラメータと
して設定していた。In order to set the irradiation conditions when performing radiation therapy planning using a conventional CT master device, only one tomographic image that includes the irradiation target area is displayed on the screen of the display device as information about the patient, and this tomographic image is Irradiation conditions such as the direction of irradiation and the irradiation field (width) on the image were set as parameters using an input device such as a keyboard.
しかし、このような従来の照射条件設定方法においては
、照射目標部位を含む一枚の断層像しか表示しなかった
ので、この画像上では５上記照射目標部位及びその周辺
組織に対して設定した照射条件は、二次元的な位置関係
しか見ることができなかった。従って、上記設定した照
射条件の照射目標部位及びその周辺組織に対する体軸方
向に沿う位置情報が全く見られず、立体的な位置関係を
視認することができなかった。このことから、勘や経験
によって設定することとなり、放射線治療時の照射条件
設定の精度及び操作性が低下するものであった。However, in this conventional irradiation condition setting method, only one tomographic image including the irradiation target area was displayed, so the irradiation conditions set for the irradiation target area and its surrounding tissue in 5 above are displayed on this image. The condition was that only two-dimensional positional relationships could be seen. Therefore, no positional information along the body axis direction with respect to the irradiation target region and its surrounding tissues under the above-set irradiation conditions could be seen, and the three-dimensional positional relationship could not be visually recognized. For this reason, settings must be made based on intuition or experience, resulting in a decrease in accuracy and operability in setting irradiation conditions during radiation therapy.
そこで、本発明は、このような問題点を解決し、照射目
標部位及びその周辺組織と設定する照射条件との、立体
的な位置関係を視認できるＣＴ装置における照射条件設
定方法を提供することを目的とする。Therefore, the present invention aims to solve these problems and provide a method for setting irradiation conditions in a CT apparatus that allows visual confirmation of the three-dimensional positional relationship between the irradiation target region and its surrounding tissue and the irradiation conditions to be set. purpose.
（課題を解決するための手段〕
上記目的を達成するために、本発明によるＣＴ装置にお
ける照射条件設定方法は、被検体の診断部位について収
集した画像データを格納する記憶装置と、この記憶装置
から画像データを読み出し画像の再構成演算を行う演算
装置と、各種の操作指令を入力する入力手段と、上記再
構成された画像を表示する表示装置と、上記各構成要素
を制御する中央処理装置とを有するＣＴ装置において、
放射線治療計画を行う時の照射条件を設定する際に、上
記表示装置の画面に、対象患者の照射目標部位を含む断
層像と、この断層像を利用して作成した照射方向に平行
な断面でのＭＰＲ画像と、その照射方向に直交する断面
でのＭＰＲ画像とを表示し、これらの画像上で上記照射
目標部位及びその周辺組織と設定る照射条件との立体的
な位置関係を視認しながら上記入力手段で照射条件を設
定するものである。(Means for Solving the Problems) In order to achieve the above object, a method for setting irradiation conditions in a CT apparatus according to the present invention includes a storage device that stores image data collected about a diagnostic region of a subject, and a an arithmetic unit that reads image data and performs image reconstruction operations; an input unit that inputs various operation commands; a display device that displays the reconstructed image; and a central processing unit that controls each of the components. In a CT apparatus having
When setting irradiation conditions for radiotherapy planning, a tomographic image including the target patient's irradiation target area and a cross section parallel to the irradiation direction created using this tomographic image are displayed on the screen of the display device. The MPR image of the area and the MPR image of a cross section perpendicular to the irradiation direction are displayed, and while visually confirming the three-dimensional positional relationship between the irradiation target area and its surrounding tissue and the set irradiation conditions on these images, The irradiation conditions are set using the input means.
以下、本発明の実施例を添付図面に基づいて詳細に説明
する。Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明による照射条件設定方法の実施に使用す
るＣＴ装置の概略構成を示すブロック図である。このＣ
Ｔ装置は、被検体の診断部位について断層像を計測し表
示するもので、図に示すように、記憶装置１と、演算装
置２と、キーボード３及びトラックボール４と、表示装
置５と、中央処理装置（以下ｒＣＰＵＪと略記する）６
とを有して成る。FIG. 1 is a block diagram showing a schematic configuration of a CT apparatus used to implement the irradiation condition setting method according to the present invention. This C
The T device measures and displays a tomographic image of a diagnostic region of a subject, and as shown in the figure, it includes a storage device 1, a calculation device 2, a keyboard 3, a trackball 4, a display device 5, and a central Processing unit (hereinafter abbreviated as rCPUJ) 6
It consists of
上記記憶装置１は、図示外の計測装置で被検体の診断部
位について収集した画像データを格納するもので１例え
ば磁気ディスクから成る。なお、この記憶袋Ｗ１１の他
にフロッピディスク７も装備されている。演算装置２は
、上記記憶装置１またはフロッピディスク７から画像デ
ータを読み出し画像の再構成演算を行うもので、その演
算制御データなどが記憶されたメモリ８が接続されてい
る。The storage device 1 stores image data collected about a diagnostic site of a subject by a measuring device not shown, and is composed of, for example, a magnetic disk. In addition to the memory bag W11, a floppy disk 7 is also provided. The arithmetic unit 2 reads out image data from the storage device 1 or the floppy disk 7 and performs image reconstruction operations, and is connected to a memory 8 in which the arithmetic control data and the like are stored.
キーボード３及びトラックボール４は、上記演算装置２
及びＣＰＵ６等に対して画像処理の各種の操作指令を入
力する入力手段となるものである。The keyboard 3 and trackball 4 are connected to the arithmetic device 2.
It also serves as an input means for inputting various operation commands for image processing to the CPU 6 and the like.
また１表示装置１５は、上記の画像処理により再構成さ
れた断層像を表示するもので１例えばＣＲＴから成る。Further, 1 display device 15 displays the tomographic image reconstructed by the above-described image processing, and is composed of, for example, a CRT.
さらに、ＣＰＵ６は、上記の各構成要素の動作を制御す
るもので、その制御データなどが記憶されたメモリ９が
接続されている。なお、第１図において、符号１０は上
記各構成要素の間でデータを転送するパスラインである
。Further, the CPU 6 controls the operations of each of the above-mentioned components, and is connected to a memory 9 in which control data and the like are stored. Incidentally, in FIG. 1, reference numeral 10 indicates a path line for transferring data between each of the above-mentioned constituent elements.
次に、このような構成のＣＴ装置を使用して放射線治療
計画を行う時の照射条件を設定する方法について、第２
図に示すフローチャートを参照して説明する。まず、前
処理として、第１図に示す記憶装置１から放射線治療計
画を行う時の対象患者の断層像群を読み出して設定する
（ステップの）。Next, the second section describes how to set irradiation conditions when performing radiation treatment planning using a CT device with such a configuration.
This will be explained with reference to the flowchart shown in the figure. First, as preprocessing, a group of tomographic images of a target patient for performing a radiation treatment plan is read out from the storage device 1 shown in FIG. 1 and set (step).
ここでは、第３図に示すように、対象患者の照射目標部
位１１を含む断層像Ｉｏと、上記照射目標部位１１の周
辺組織１２を含む連続した多数の断層機工１〜Ｉｎとが
選択される。Here, as shown in FIG. 3, a tomographic image Io including the irradiation target region 11 of the target patient and a large number of continuous tomographic structures 1 to In including the surrounding tissue 12 of the irradiation target region 11 are selected. .
このように前処理において対象患者の断層像群Ｉｏ、Ｉ
ｓ”Ｉｎが設定されたところで、次に、第４図に示すよ
うに表示装［５の画面１３の−の区画１３ａに、照射目
標部位１１を含む断層像ＩＯを表示する（ステップ■）
。また、上記画面１３の他の区画１３ｂには、第３図に
示すように、断層像群Ｉｏ、１１〜Ｉｎを利用して作成
した放射線源１４からの照射方向に平行な断面でのＭＰ
Ｒ（Ｍｕｌｔｉ Ｐｌａｎｅ Ｒｅｃｏｎｓｔｒｕｃｔ
ｉｏｎ）画像１５を表示する（ステップ■）。さらに、
上記画面１３の更に他の区画１３ｃには、同じく第３図
に示すように、断層像群Ｉｏ、１１〜Ｉｎを利用して作
成した放射線源１４からの照射方向に直交する断面での
ＭＰＲ画像１６を表示する（ステップ■）。このとき、
第４図に示すように、照射方向に平行な断面でのＭＰＲ
画像１５及び直交する断面でのＭＰＲ画像１６には、対
象患者の照射目標部位１１の周辺組織１２が体軸方向に
沿う奥行きを有して表示される。In this way, in preprocessing, the tomographic image groups Io and I of the target patient are
s"In is set, next, as shown in FIG.
. Further, as shown in FIG. 3, in another section 13b of the screen 13, MP in a cross section parallel to the irradiation direction from the radiation source 14 created using the tomographic image groups Io, 11 to In is shown.
R (Multi Plane Reconstruct
ion) Display image 15 (step ■). moreover,
Another section 13c of the screen 13 includes an MPR image in a cross section perpendicular to the irradiation direction from the radiation source 14 created using the tomographic image groups Io, 11 to In, as shown in FIG. 16 is displayed (step ■). At this time,
As shown in Figure 4, MPR in a cross section parallel to the irradiation direction
In the image 15 and the MPR image 16 in a cross section orthogonal to the image 15, the surrounding tissue 12 of the irradiation target region 11 of the target patient is displayed with a depth along the body axis direction.
次に、第４図に示すように画面１３に表示された上記三
枚の画像Ｉｏ、１５．１６ をｌｌ！察しながら、第
１図に示す例えばトラックボール４を操作して所要の照
射条件を設定する（ステップ■）。Next, as shown in FIG. 4, the above three images Io, 15.16 displayed on the screen 13 are ll! While observing this, for example, the trackball 4 shown in FIG. 1 is operated to set the required irradiation conditions (step 2).
すなわち、−の区画１３ａにおいて断層機工０上で放射
線源１４（第３図参照）から放射する照射野を決めるた
めに照射目標部位１１及びその周辺組織１２を内部に包
んでマーキング線１７ａ。That is, in order to determine the irradiation field to be radiated from the radiation source 14 (see FIG. 3) on the tomography machine 0 in the - section 13a, a marking line 17a is formed to enclose the irradiation target region 11 and its surrounding tissue 12 therein.
１７ｂを入力し、また、他の区画１３ｂにおいてはＭＰ
Ｒ画像１５上で周辺組織１２の体軸方向の長さを示すマ
ーキング線１８ａ、１８ｂを入力し、さらに、他の区画
１３ｃにおいては別のＭＰＲ画像１６上で周辺組織１２
の体軸に直交する方向の幅を示すマーキング線１９ａ、
１９ｂを入力する。17b, and in the other section 13b, MP
Marking lines 18a and 18b indicating the length of the surrounding tissue 12 in the body axis direction are inputted on the R image 15, and furthermore, in another section 13c, the surrounding tissue 12 is inputted on another MPR image 16.
marking line 19a indicating the width in the direction perpendicular to the body axis of the
Enter 19b.
そして、上記のマーキング線１７ａ、１７ｂ ：１８ａ
、１８ｂ ； １９ａ、１９ｂを適宜移動することによ
り、対象患者の照射目標部位１１に対する放射線の照射
の方向や照射野などの照射条件を適正に設定する。この
とき、第４図から明らかなように、上記各画像Ｉｏ、１
５．１６ 上で照射目標部位１１及びその周辺組織１２
との立体的な位置関係を視認しながら各照射条件を設定
することができる。And the above marking lines 17a, 17b: 18a
, 18b; By appropriately moving 19a and 19b, irradiation conditions such as the direction of radiation irradiation and the irradiation field for the irradiation target region 11 of the target patient are appropriately set. At this time, as is clear from FIG. 4, each of the above images Io, 1
5.16 Irradiation target area 11 and surrounding tissue 12 above
Each irradiation condition can be set while visually confirming the three-dimensional positional relationship with the
次に、ステップ■では、以上の照射条件の設定を総ての
照射量（照射方向）について終了したかどうかを判定す
る。未だ全照射間について設定が終了していないときは
、ステップ■は１１ Ｎ Ｏｔｌ側へ進み、上記ステッ
プ■の前へ戻り前記ステップ■→■→■→■を繰り返す
、全照射間について設定が終了したときは、ステップ■
は” Ｙ Ｅ Ｓ ”側へ進み、次の処理へ進む。この
ようにして、照射条件の設定手順は終了する。Next, in step (2), it is determined whether the setting of the above irradiation conditions has been completed for all irradiation doses (irradiation directions). If the settings for all irradiation intervals have not yet been completed, proceed to step 11 N Otl side, return to the previous step 2, and repeat step 2 →■→■→■.The settings for all irradiation intervals are completed. When you do, step ■
goes to the "YES" side and goes to the next process. In this way, the procedure for setting the irradiation conditions is completed.
本発明は以上のように構成されたので、ＣＴ表装置おい
て、放射線治療計画を行う時の照射条件を設定する際に
、表示装置５の画面１３に対象患者の照射目標部位１１
を含む断層像Ｉｏと、照射方向に平行な断面でのＭＰＲ
画像１５と、直交する断面でのＭＰＲ画像１６とを表示
することにより、これらの画像Ｉｏ、１５．１６ 上で
上記照射目標部位１１及びその周辺組織１２との立体的
な位置関係を視認しながら照射条件を設定することがで
きる。従って、従来のように特に照射目標部位１１の周
辺組織１２の体軸方向及び体軸に直交する方向の幅を設
定するのに勘や経験に頼ることなく、各画像Ｉｏ、１５
．１６ 上で実際の位置関係を見ながら設定することが
できる。このことから、対象患者に対する放射線治療計
画を行う時の照射条件設定の精度及び操作性を向上する
ことができる。Since the present invention is configured as described above, when setting the irradiation conditions for performing a radiation treatment plan in the CT table device, the irradiation target region of the target patient is displayed on the screen 13 of the display device 5.
The tomographic image Io including the MPR in the cross section parallel to the irradiation direction
By displaying the image 15 and the MPR image 16 in an orthogonal cross section, it is possible to visually confirm the three-dimensional positional relationship between the irradiation target region 11 and its surrounding tissue 12 on these images Io, 15.16. Irradiation conditions can be set. Therefore, unlike in the past, each image Io, 15 does not have to rely on intuition or experience to set the width in the body axis direction and the direction orthogonal to the body axis of the surrounding tissue 12 of the irradiation target region 11.
．． 16 You can make settings while looking at the actual positional relationship above. From this, it is possible to improve the accuracy and operability of setting irradiation conditions when performing a radiation treatment plan for a target patient.
第１図は本発明による照射条件設定方法の実施に使用す
るＣＴ表装置概略構成を示すブロック図、第２図は上記
のＣＴ表装置使用して放射線治療計画を行う時の照射条
件を設定する方法の手順を示すフローチャート、第３図
は多数の連続した断層像とこれらを利用して作成したＭ
ＰＲ画像の関係を示す説明図、第４図は表示装置の画面
の各区画に表示された三つの画像の例を示す説明図であ
る。
１・・・記憶装置、２・・・演算装置、３・・・キーボ
ード、４・・・トラックボール、５・・・表示装置、６
・・・ＣＰＵ、１０・・・パスライン、１１・・・照射
目標部位、１２・・・周辺組織、１３・・・画面、１４
・・・放射線源、１５・・・照射方向に平行な断面での
ＭＰＲ画像、１６・・・照射方向に直交する断面でのＭ
ＰＲ画像、１７ａ。
１７ ｂ 、 １８ ａ 、 １８ ｂ 、 １９ ａ
、 １９ ｂ −マー端
１
図
第２図Fig. 1 is a block diagram showing the schematic configuration of a CT chart device used to implement the irradiation condition setting method according to the present invention, and Fig. 2 shows how to set irradiation conditions when performing a radiation treatment plan using the above-mentioned CT chart device. A flowchart showing the procedure of the method, Figure 3 shows a large number of consecutive tomographic images and the M created using them.
FIG. 4 is an explanatory diagram showing the relationship between PR images. FIG. 4 is an explanatory diagram showing an example of three images displayed in each section of the screen of the display device. DESCRIPTION OF SYMBOLS 1... Storage device, 2... Arithmetic device, 3... Keyboard, 4... Trackball, 5... Display device, 6
... CPU, 10 ... Pass line, 11 ... Irradiation target site, 12 ... Surrounding tissue, 13 ... Screen, 14
... Radiation source, 15... MPR image in a cross section parallel to the irradiation direction, 16... M in a cross section perpendicular to the irradiation direction
PR image, 17a. 17 b, 18 a, 18 b, 19 a
, 19 b - mer end 1 Fig. 2
Claims (1)
納する記憶装置と、この記憶装置から画像データを読み
出し画像の再構成演算を行う演算装置と、各種の操作指
令を入力する入力手段と、上記構成された画像を表示す
る表示装置と、上記各構成要素を制御する中央処理装置
とを有するＣＴ装置において、放射線治療計画を行う時
の照射条件を設定する際に、上記表示装置の画面に、対
象患者の照射目標部位を含む断層像と、この断層像を利
用して作成した照射方向に平行な断面でのＭＰＲ画像と
、その照射方向に直交する断面でのＭＰＲ画像とを表示
、これらの画像上で上記照射目標部位及びその周辺組織
と設定する照射条件との立体的な位置関係を視認しなが
ら上記入力手段で照射条件を設定することを特徴とする
ＣＴ装置における照射条件設定方法。1. A storage device that stores image data collected about the diagnostic site of the subject, a calculation device that reads the image data from the storage device and performs image reconstruction calculations, an input means that inputs various operation commands, and the above-mentioned In a CT apparatus that has a display device that displays configured images and a central processing unit that controls each of the components described above, when setting irradiation conditions for performing a radiation treatment plan, the screen of the display device displays the following information: Displays a tomographic image including the target patient's irradiation target area, an MPR image created using this tomographic image in a cross section parallel to the irradiation direction, and an MPR image in a cross section perpendicular to the irradiation direction. A method for setting irradiation conditions in a CT apparatus, characterized in that irradiation conditions are set using the input means while visually confirming the three-dimensional positional relationship between the irradiation target region and its surrounding tissues and the irradiation conditions to be set on an image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019043A JPH03224547A (en) | 1990-01-31 | 1990-01-31 | Irradiating condition setting method in ct device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019043A JPH03224547A (en) | 1990-01-31 | 1990-01-31 | Irradiating condition setting method in ct device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03224547A true JPH03224547A (en) | 1991-10-03 |
Family
ID=11988397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019043A Pending JPH03224547A (en) | 1990-01-31 | 1990-01-31 | Irradiating condition setting method in ct device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03224547A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5651043A (en) * | 1994-03-25 | 1997-07-22 | Kabushiki Kaisha Toshiba | Radiotherapy system |
| JP2008295761A (en) * | 2007-05-31 | 2008-12-11 | Toshiba Corp | Magnetic resonance imaging apparatus |
| US20120237105A1 (en) * | 2009-12-08 | 2012-09-20 | Koninklijke Philips Electronics N.V. | Ablation treatment planning and device |
-
1990
- 1990-01-31 JP JP2019043A patent/JPH03224547A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5651043A (en) * | 1994-03-25 | 1997-07-22 | Kabushiki Kaisha Toshiba | Radiotherapy system |
| US5734692A (en) * | 1994-03-25 | 1998-03-31 | Kabushiki Kaisha Toshiba | Radiotherapy system |
| US5754623A (en) * | 1994-03-25 | 1998-05-19 | Kabushiki Kaisha Toshiba | Radiotherapy system |
| JP2008295761A (en) * | 2007-05-31 | 2008-12-11 | Toshiba Corp | Magnetic resonance imaging apparatus |
| US20120237105A1 (en) * | 2009-12-08 | 2012-09-20 | Koninklijke Philips Electronics N.V. | Ablation treatment planning and device |
| US9125689B2 (en) * | 2009-12-08 | 2015-09-08 | Koninklijke Philips N.V. | Clipping-plane-based ablation treatment planning |
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