JP2005349036A5 - - Google Patents
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- JP2005349036A5 JP2005349036A5 JP2004174634A JP2004174634A JP2005349036A5 JP 2005349036 A5 JP2005349036 A5 JP 2005349036A5 JP 2004174634 A JP2004174634 A JP 2004174634A JP 2004174634 A JP2004174634 A JP 2004174634A JP 2005349036 A5 JP2005349036 A5 JP 2005349036A5
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- magnetic resonance
- data
- nuclear magnetic
- imaging apparatus
- resonance imaging
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Claims (4)
前記制御手段は、ｋ空間を、その原点近傍領域を共通に有して回転角度の異なる複数のブロックに分割して、ブロック毎にｋ空間データを計測し、
前記画像作成手段は、前記ブロックのｋ空間データの計測毎に、少なくとも前記原点近傍領域を該ブロックのデータで更新して、前記画像を構成することを特徴とする核磁気共鳴撮像装置。 Gradient magnetic field generating means for generating a gradient magnetic field in a static magnetic field space, and imaging means for causing a nuclear magnetic resonance in an atomic nucleus constituting a tissue of the subject placed in the space and measuring a nuclear magnetic resonance signal generated from the subject A magnetic resonance imaging apparatus comprising: a control means for controlling the gradient magnetic field generating means and the imaging means; and an image creating means for forming an image of the subject using a nuclear magnetic resonance signal measured by the imaging means. In
The control means divides the k-space into a plurality of blocks having a common origin vicinity region and different rotation angles, and measures k-space data for each block,
The nuclear magnetic resonance imaging apparatus, wherein the image creating means updates the at least the region near the origin with the data of the block every time the k-space data of the block is measured.
前記画像作成手段は、計測された各ブロックのデータを用いてｋ空間データの一部が欠損したデータを初期データとして作成し、前記初期データと逐次ブロック毎に計測される前記欠損データを含むデータとを用いて時相画像を作成することを特徴とする核磁気共鳴撮像装置。 The nuclear magnetic resonance imaging apparatus according to claim 1,
The image creation means creates data in which a part of the k-space data is missing using the measured data of each block as initial data, and the initial data and data including the missing data measured sequentially for each block A nuclear magnetic resonance imaging apparatus that creates a temporal image using
前記制御手段は、前記初期データ作成のための複数ブロックの計測において、一部の位相エンコードを間引いて計測を行い、時相画像作成のためのブロック毎の計測において、初期データ作成時に間引いた位相エンコードを含んで計測を行うよう傾斜磁場発生手段を制御することを特徴とする核磁気共鳴撮像装置。 The nuclear magnetic resonance imaging apparatus according to claim 2,
In the measurement of a plurality of blocks for creating the initial data, the control means performs measurement by decimating a part of phase encoding, and in the measurement for each block for creating the time phase image, the phase thinned out at the time of initial data creation. A nuclear magnetic resonance imaging apparatus, wherein the gradient magnetic field generating means is controlled to perform measurement including encoding.
前記初期データは、高周波域の計測空間データであることを特徴とする核磁気共鳴撮像装置。 The nuclear magnetic resonance imaging apparatus according to claim 2 or 3,
The nuclear magnetic resonance imaging apparatus, wherein the initial data is measurement space data in a high frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004174634A JP4265783B2 (en) | 2004-06-11 | 2004-06-11 | Nuclear magnetic resonance imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004174634A JP4265783B2 (en) | 2004-06-11 | 2004-06-11 | Nuclear magnetic resonance imaging system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2005349036A JP2005349036A (en) | 2005-12-22 |
| JP2005349036A5 true JP2005349036A5 (en) | 2007-07-12 |
| JP4265783B2 JP4265783B2 (en) | 2009-05-20 |
Family
ID=35583979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004174634A Expired - Fee Related JP4265783B2 (en) | 2004-06-11 | 2004-06-11 | Nuclear magnetic resonance imaging system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4265783B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10884086B1 (en) * | 2019-07-29 | 2021-01-05 | GE Precision Healthcare LLC | Systems and methods for accelerated multi-contrast propeller |
-
2004
- 2004-06-11 JP JP2004174634A patent/JP4265783B2/en not_active Expired - Fee Related
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