JP2017140165A5 - - Google Patents
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- JP2017140165A5 JP2017140165A5 JP2016022863A JP2016022863A JP2017140165A5 JP 2017140165 A5 JP2017140165 A5 JP 2017140165A5 JP 2016022863 A JP2016022863 A JP 2016022863A JP 2016022863 A JP2016022863 A JP 2016022863A JP 2017140165 A5 JP2017140165 A5 JP 2017140165A5
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- Japan
- Prior art keywords
- mri
- pulse sequence
- simulation
- predetermined
- simulator
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- 238000004088 simulation Methods 0.000 claims 16
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims 9
- 238000004364 calculation method Methods 0.000 claims 7
- 238000003384 imaging method Methods 0.000 claims 2
- 230000005415 magnetization Effects 0.000 claims 1
Claims (6)
数値ファントムを撮像する仮想ＭＲＩ検出部と、
ＭＲＩパルスシーケンスに基づき前記ＭＲＩ検出部を制御するＭＲＩコントローラと、
前記ＭＲＩパルスシーケンスに基づき前記仮想ＭＲＩ検出部を制御するＭＲＩシミュレータと、
前記ＭＲＩコントローラ又は前記ＭＲＩシミュレータから出力されるＭＲＩ信号を復号して再構成画像を生成するＭＲＩリコンストラクタと、
前記ＭＲＩコントローラからのＭＲＩ信号を復号した第１の再構成画像及び／又は前記ＭＲＩシミュレータからのＭＲＩ信号を復号した第２の再構成画像を表示する表示部と
を有することを特徴とするＭＲＩシミュレーションシステム。 An MRI detector for imaging a subject;
A virtual MRI detector for imaging a numerical phantom;
An MRI controller for controlling the MRI detector based on an MRI pulse sequence;
An MRI simulator for controlling the virtual MRI detector based on the MRI pulse sequence;
An MRI reconstructor that generates a reconstructed image by decoding an MRI signal output from the MRI controller or the MRI simulator;
A display unit for displaying a first reconstructed image obtained by decoding the MRI signal from the MRI controller and / or a second reconstructed image obtained by decoding the MRI signal from the MRI simulator. system.
前記ＭＲＩコントローラから出力される前記被写体のＭＲＩ信号に基づいて前記数値ファントムを作成する
ことを特徴とするＭＲＩシミュレーションシステム。 The MRI simulation system according to claim 1,
The numerical phantom is created based on the MRI signal of the subject output from the MRI controller.
前記ＭＲＩシミュレータは、
前記ＭＲＩパルスシーケンスに基づいて単位時間毎にＭＲＩシミュレーション計算を行い、
前記ＭＲＩパルスシーケンスが所定のパルスシーケンスの場合には、所定期間の間に核磁化が感じる磁場強度の変化量の積分値を演算し、演算された前記積分値に基づき、積分値を演算した前記所定時間内の前記単位時間毎のＭＲＩシミュレーション計算を割愛し、１回で前記所定期間のＭＲＩシミュレーション計算を行う
ことを特徴とするＭＲＩシミュレーションシステム。 The MRI simulation system according to claim 1 or 2,
The MRI simulator is
Perform MRI simulation calculation per unit time based on the MRI pulse sequence,
When the MRI pulse sequence is a predetermined pulse sequence, an integral value of the amount of change in magnetic field intensity felt by the nuclear magnetization during a predetermined period is calculated, and the integrated value is calculated based on the calculated integrated value. An MRI simulation system, wherein the MRI simulation calculation for each unit time within a predetermined time is omitted, and the MRI simulation calculation for the predetermined period is performed once.
前記ＭＲＩシミュレータは、
前記ＭＲＩパルスシーケンスが前記所定のパルスシーケンスであって、最小時間分解能で実行することが望ましい所定のシミュレーション計算を含む場合には、前記所定のシミュレーション計算のための分岐を設け、その分岐において最小時間分解能で前記所定のシミュレーション計算を実行し、その計算結果を前記所定のパルスシーケンスのシミュレーションデータとして使用する
ことを特徴とするＭＲＩシミュレーションシステム。 The MRI simulation system according to claim 3, wherein
The MRI simulator is
When the MRI pulse sequence is the predetermined pulse sequence and includes a predetermined simulation calculation that is desirably executed with the minimum time resolution, a branch for the predetermined simulation calculation is provided, and the minimum time is included in the branch. An MRI simulation system, wherein the predetermined simulation calculation is executed with a resolution, and the calculation result is used as simulation data of the predetermined pulse sequence.
前記ＭＲＩシミュレータは、
前記ＭＲＩパルスシーケンスに基づくカーネル関数のソースコードを生成する手段と、
前記カーネル関数のソースコードをコンパイルしてオブジェクトコードに変換する手段と、
前記オブジェクトコードを実行してＭＲＩ信号を出力する手段とを有する
ことを特徴とするＭＲＩシミュレーションシステム。 The MRI simulation system according to any one of claims 1 to 4,
The MRI simulator is
Means for generating a kernel function source code based on the MRI pulse sequence;
Means for compiling source code of the kernel function and converting it into object code;
An MRI simulation system comprising: means for executing the object code and outputting an MRI signal.
コンピュータを、
前記ＭＲＩパルスシーケンスに基づくカーネル関数のソースコードを生成する手段と、
前記カーネル関数のソースコードをコンパイルしてオブジェクトコードに変換する手段と、
前記オブジェクトコードを実行してＭＲＩ信号を出力する手段と
を有するＭＲＩシミュレーション装置
として機能させるためのプログラム。 A program used in the MRI simulation system according to any one of claims 1 to 5,
Computer
It means for generating a source code of the kernel function based on the MRI pulse sequences,
Means for compiling source code of the kernel function and converting it into object code;
A program for functioning as an MRI simulation apparatus comprising: means for executing the object code and outputting an MRI signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016022863A JP6613161B2 (en) | 2016-02-09 | 2016-02-09 | MRI simulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016022863A JP6613161B2 (en) | 2016-02-09 | 2016-02-09 | MRI simulation system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017140165A JP2017140165A (en) | 2017-08-17 |
| JP2017140165A5 true JP2017140165A5 (en) | 2018-05-31 |
| JP6613161B2 JP6613161B2 (en) | 2019-11-27 |
Family
ID=59629010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016022863A Active JP6613161B2 (en) | 2016-02-09 | 2016-02-09 | MRI simulation system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6613161B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019138575A1 (en) * | 2018-01-15 | 2019-07-18 | 株式会社エム・アール・テクノロジー | Digital phantom for mri apparatus and control method for same |
| KR20230022961A (en) * | 2020-06-10 | 2023-02-16 | 코르스메드 에이비 | Simulation method of magnetic resonance scanner |
| EP4231908A4 (en) * | 2020-11-24 | 2024-05-08 | Global Diagnostic Imaging Solutions, LLP | System and method for medical simulation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004013190A (en) * | 2002-06-03 | 2004-01-15 | Matsushita Electric Ind Co Ltd | Environment for software development, simulator, and recording medium |
| DE102007036564B4 (en) * | 2007-08-03 | 2009-07-09 | Siemens Ag | Method for tissue-specific optimization of imaging parameters |
| JP6371554B2 (en) * | 2014-03-28 | 2018-08-08 | 株式会社日立製作所 | Magnetic resonance imaging system |
-
2016
- 2016-02-09 JP JP2016022863A patent/JP6613161B2/en active Active
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