Magnetic resonance imaging apparatus and magnetic resonance imaging method

Patent metadata

Field	Value
Publication number	US-9194928-B2
Application number	US-89694207-A
Country	US
Kind code	B2
Filing date	Sep 6, 2007
Priority date	Sep 6, 2006
Publication date	Nov 24, 2015
Grant date	Nov 24, 2015

Abstract

A magnetic resonance imaging apparatus includes an imaging condition setting unit, a data acquisition unit and an image data generating unit. The imaging condition setting unit sets respective imaging conditions corresponding to plural imaging regions. The respective imaging conditions include at least one non-contrast-enhanced imaging condition. The data acquisition unit acquires respective pieces of data corresponding to the plural imaging regions according to the respective imaging conditions. The image data generating unit generates image data based on the respective pieces of data corresponding to the plural imaging regions.

First claim

What is claimed is:

1. A magnetic resonance imaging (MRI) apparatus comprising:
MRI system components including static and gradient magnetic field generators, at least one radio frequency (RF) coil coupled to an imaging area within magnetic fields generated by the static and gradient magnetic field generators, an RF transmitter, an RF receiver, a display and a computer control system connected to control other MRI system components, said control computer system having at least one computer processor and memory being configured to
concurrently display (a) an identity of plural different imaging regions of a subject and (b) plural MR imaging conditions for each of plural identified different imaging regions, the plural MR imaging conditions including at least one operator-selectable type of an MR imaging pulse sequence for non-contrast-enhanced imaging, or at least one operator-selectable parameter of the MR imaging pulse sequence, and wherein the plural identified different imaging regions for identified different anatomical regions correspond to plural different positions of a table used to transport the subject from one imaging position to another;
select, via operator input, plural different imaging regions from among displayed plural regions and select or set respective imaging conditions corresponding to each of selected plural different imaging regions;
set, via the display and operator input, a temporal order of imaging order for each of the selected plural imaging regions;
acquire plural MR data sets respectively corresponding to the selected plural different imaging regions using selected or set respective MR imaging conditions, wherein the plural MR data sets are acquired automatically and sequentially in accordance with the set temporal order of imaging for each of the selected plural imaging regions; and
generate image data based on the plural MR data sets respectively corresponding to the selected plural different imaging regions.

2. A magnetic resonance imaging apparatus according to claim 1 , wherein respective data sets are acquired sequentially from the selected plural imaging regions.

3. A magnetic resonance imaging apparatus according to claim 1 , said control system being further configured to perform image processing to the image data, and
wherein an acquisition sequence for respective data sets is set by an operation of an operator input device.

4. A magnetic resonance imaging apparatus according to claim 1 , wherein at least one of the plural different imaging regions and an acquisition sequence order to acquire respective data sets from the plural different imaging regions is set using a correspondingly configured coil array.

5. A magnetic resonance imaging apparatus according to claim 1 , wherein an imaging condition is set for non-contrast-enhanced MRA.

6. A magnetic resonance imaging apparatus according to claim 1 ,
wherein a non-contrast-enhanced MRA sequence for acquiring an MRA image by subtracting between data sets generated based on respective magnetic resonance signals acquired at systole and diastole of a cardiac cycle is made selectable to be selected as one of respective imaging conditions and an intensity of a spoiler pulse of the non-contrast-enhanced MRA sequence is made selectable to be set.

7. A magnetic resonance imaging apparatus according to claim 1 , wherein a table top is moved for repositioning an object each time data acquisition from one imaging region is completed.

8. A magnetic resonance imaging apparatus according to claim 1 , wherein said control system is further configured to:
generate MRA image data in which an artery and a vein are separated by performing subtraction processing to respective image data sets corresponding to systole and diastole of a cardiac cycle; and
give instruction information to perform the subtraction processing automatically subsequent to data acquisition for generating the respective image data sets corresponding to systole and diastole.

9. A magnetic resonance imaging apparatus according to claim 1 , wherein said control system is further configured to:
generate MRA image data by performing weighted subtraction processing to the image data; and
give instruction information to perform the weighted subtraction processing automatically.

10. A magnetic resonance imaging apparatus according to claim 1 , wherein said control system is further configured to:
perform projection processing on generated three-dimensional image data; and
give instruction information to perform the projection processing automatically subsequent to data acquisition for generating the three-dimensional image data.

11. A magnetic resonance imaging apparatus according to claim 1 , wherein said control system is further configured to:
to perform post-processing to the image data; and
give instruction information to perform the post-processing automatically.

12. A magnetic resonance imaging apparatus according to claim 1 , wherein respective data sets are acquired with a phased array coil which configures coil elements to acquire respective plural MR data sets from the plural different imaging regions.

13. A magnetic resonance imaging apparatus according to claim 1 ,
wherein respective data sets are acquired from the plural different aging regions with a whole body coil.

14. A magnetic resonance imaging apparatus according to claim 1 , wherein a number of coil elements is set as an imaging condition for parallel imaging by which respective data sets are acquired while skipping at least one phase encode by using the coil elements.

15. A magnetic resonance (MR) imaging method comprising:
concurrently displaying (a) an identity of plural different imaging regions of a subject and (b) plural MR imaging conditions for each of plural identified different imaging regions, the plural MR imaging conditions including at least one operator-selectable type of an MR imaging pulse sequence for non-contrast-enhanced MR imaging, or at least one operator-selectable parameter of the MR imaging pulse sequence, and wherein the plural identified different imaging regions for identified different anatomical regions correspond to plural different positions of a table used to transport the subject from one imaging position to another;
selecting via operator input plural different imaging regions among displayed plural different imaging regions and selecting or setting respective MR imaging conditions corresponding to each of selected plural different imaging regions;
setting, via an operator display and input, a temporal order of imaging for each of the selected plural imaging regions set by the operator for each of the selected plural imaging regions;
acquiring plural data sets respectively corresponding to the selected plural different imaging regions according to selected or set respective MR imaging conditions, wherein the plural MR data sets are acquired automatically and sequentially in accordance with the temporal order of imaging; and
generating MR image data based on MR data sets respectively corresponding to the selected plural different imaging regions.

Assignees

• Miyazaki Mitsue
• Toshiba Kk
• Toshiba Medical Sys Corp

Inventors

• Miyazaki Mitsue

Classifications

• G01R33/5601

  involving use of a contrast agent for contrast manipulation, e.g. a paramagnetic, super-paramagnetic, ferromagnetic or hyperpolarised contrast agent · CPC title

• G01R33/546

  Interface between the MR system and the user, e.g. for controlling the operation of the MR system or for the design of pulse sequences · CPC title

• G01R33/56383

  involving motion of the sample as a whole, e.g. multistation MR or MR with continuous table motion · CPC title

• G01R33/5607

  by reducing the NMR signal of a particular spin species, e.g. of a chemical species for fat suppression, or of a moving spin species for black-blood imaging · CPC title

• G01R33/5605

  by transferring coherence or polarization from a spin species to another, e.g. creating magnetization transfer contrast [MTC], polarization transfer using nuclear Overhauser enhancement [NOE] · CPC title