WO2006068149A1 - 磁気共鳴撮影方法および装置 - Google Patents
磁気共鳴撮影方法および装置 Download PDFInfo
- Publication number
- WO2006068149A1 WO2006068149A1 PCT/JP2005/023391 JP2005023391W WO2006068149A1 WO 2006068149 A1 WO2006068149 A1 WO 2006068149A1 JP 2005023391 W JP2005023391 W JP 2005023391W WO 2006068149 A1 WO2006068149 A1 WO 2006068149A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- imaging
- magnetic resonance
- subject
- resonance imaging
- region
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
- G01R33/56375—Intentional motion of the sample during MR, e.g. moving table imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
- A61B5/7285—Specific aspects of physiological measurement analysis for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal
Definitions
- the present invention relates to a magnetic resonance imaging apparatus, and more particularly, to a magnetic resonance imaging apparatus (hereinafter referred to as an MRI apparatus) that moves a bed on which a subject is placed and captures a plurality of images along the moving direction of the bed. Say).
- an MRI apparatus magnetic resonance imaging apparatus
- breath-holding imaging is performed to suppress artifacts due to respiratory motion at sites where the imaging cross section is affected by respiratory motion, such as the chest and abdomen.
- image data of a COR cross section for a plurality of stations are acquired, these image data are connected to create one whole body image.
- image data of the TRS cross section is obtained, this image data is reformatted to create a whole body image in the other direction, that is, a COR cross section or a SAG cross section.
- a technique for controlling the slice position by using is described.
- Patent Document 1 Japanese Patent Laid-Open No. 2004-611
- Patent Document 2 JP 2000-79107 A
- Patent Document 3 Japanese Patent Publication No. 9-508050
- Patent Document 3 also presents the problem and means for solving the problem of position alignment between imaging regions including the region where breath-holding imaging is performed in whole-body imaging.
- an object of the present invention is to provide an MRI apparatus that can obtain a good whole body image without a slice misregistration in whole body imaging accompanied by bed movement.
- the magnetic resonance imaging method of the present invention is a method for sequentially imaging a plurality of imaging regions in the moving direction of the subject by moving a transport means for mounting the subject in a static magnetic field space of the magnetic resonance imaging apparatus. In this way, the shooting positions of multiple shooting areas are aligned and the entire shooting area is shot. That is, in the magnetic resonance imaging method of the present invention, an area selection step of selecting, from the plurality of imaging areas, a first imaging area and a second imaging area that performs imaging with control of body movement of the subject; A first imaging step for imaging the first imaging area, and a second imaging step for imaging the second imaging area, wherein the second imaging step includes the body of the subject.
- the position of the second imaging area is controlled.
- the magnetic resonance imaging apparatus of the present invention is an imaging means for imaging a plurality of imaging regions of a subject arranged in the static magnetic field space by nuclear magnetic resonance, and moves the subject with respect to the static magnetic field space.
- Moving means image forming means for forming an image using measurement data obtained from a plurality of imaging regions of the subject; control means for controlling the imaging means, the moving means, and the image forming means;
- the control means includes an input / output means for displaying the image while inputting a user command to the control means, and the control means controls the photographing means and the moving means to sequentially photograph the plurality of photographing regions.
- the apparatus further comprises body movement detecting means for detecting positional information of body movement of the subject, and the pre-written output means includes a first imaging area and a body of the subject from a plurality of imaging areas of the subject.
- Information for selecting a second imaging region for performing imaging with motion control is input, and the control means is based on the positional information of the first imaging region and the positional information of the body motion, Thus, the second imaging region is controlled to perform imaging.
- the imaging positions of the plurality of imaging regions are shifted (misregistration).
- a good whole body image can be obtained.
- the body movement of the subject such as breath-holding photography is controlled
- a change in the subject position during movement due to the body movement of the subject is detected, and this change amount is reflected to reflect the change in the imaging position.
- imaging cross section it is possible to prevent a misregistration or a non-imaging region from occurring in the finally obtained whole body image.
- FIG. 1 is a block diagram showing an overall outline of an MRI apparatus to which the present invention is applied.
- this MRI apparatus has a magnet 102 that generates a uniform static magnetic field in a space where the subject 101 is placed, a gradient magnetic field coil 103 that generates a gradient magnetic field in this space, and a high-frequency magnetic field in the subject 101.
- RF coil 104 for irradiating and RF probe 105 for detecting the NMR signal generated by subject 101 is provided.
- the magnet 102 is made of a permanent magnet, a normal conducting magnet, or a superconducting magnet, and generates a static magnetic field in a direction orthogonal to or parallel to the body axis of the subject 101.
- the gradient magnetic field coil 103 is composed of gradient magnetic field coils in three directions of X, Y, and ⁇ , and each generates a gradient magnetic field in response to a signal from the gradient magnetic field power supply 109. By applying the gradient magnetic field, it is possible to specify the cross section of the subject to be excited and to add position information to the NMR signal.
- the RF coil 104 generates a high-frequency magnetic field according to the signal of the RF transmission 110.
- the signal of the RF probe 105 is detected by the signal detection unit 106, processed by the signal processing unit 107, and converted into an image signal by calculation.
- the RF probe 105 is fixed to the device. May be fixed to the subject, or both may be used in combination. In the case of fixing to the subject, for example, a plurality of RF probes are arranged in parallel in the moving direction of the subject, and the signals are switched by switching the RF probes with the movement.
- the image created by the signal processing unit 107 is displayed on the display unit 108.
- the gradient magnetic field power source 109, the RF transmission unit 110, and the signal detection unit 106 are controlled by the control unit 111 in accordance with a control sequence called a pulse sequence.
- the MRI apparatus further includes a bed 112 for carrying the subject 101 into the static magnetic field space and moving the subject 101 within the static magnetic field space.
- the top plate of the bed 112 is provided with detection means, for example, an encoder, for detecting the position and amount of movement.
- the bed 112 is driven by the bed driving unit 113.
- the bed driving unit 113 is also controlled by the control unit 111, and in the MRI of the present invention, imaging is performed in conjunction with the movement of the bed.
- FIG. 2 to 4 are diagrams showing a first embodiment of the present invention
- FIG. 2 is a diagram for explaining the imaging part of each station
- FIG. 3 is a diagram for explaining the procedure of breath holding imaging
- FIG. 5 is a diagram for explaining a relationship between a displacement amount due to body movement and a shift of a slice position.
- multiple (here, 6) COR cross sections 201 to 206 at the same level along the body axis direction of the subject 101 Shoot the station. That is, first, the cross section 201 including the head of the subject is photographed at the first station, and then the bed on which the subject is placed is moved by a predetermined amount in the body axis direction (HF direction), and the subject at the second station. The cross section 202 including the chest is taken. In this way, in multi-station shooting, one bed is shot with the bed stationary, and the first to sixth stations are shot while moving the bed between the station and the station.
- Each cross section is preferably set so that a part thereof overlaps, and a series of cross-sectional images of the whole body along the body axis of the subject can be obtained by these series of imaging.
- the level force when performing breath-hold photographing 901, 902 When the same as level 900 when performing non-breathing photographing, the slice position of the same level However, misregistration problems do not occur.However, as shown in (b), when two breath-holding 901 and 902 have different breath-holding levels, or as shown in (c), multiple times If the breath-holding levels in 901 and 902 are the same, but these levels are different from level 900 when non-breath-holding is performed, slice misregistration will occur.
- a navigation sequence 301 for detecting a body movement position is executed prior to imaging 305, and position information is acquired using a navigation echo.
- body movement in the direction intersecting the COR section that is, body movement in the vertical direction (AP direction) shown in FIG. 4 becomes a problem. Therefore, in the navigation sequence, the region 401 where the movement in the AP direction can be monitored, specifically, the region 401 that intersects the abdominal wall in the AP direction is excited, and the phase encode 0 echo signal (navigation echo) is generated from this region 401. To get. By performing one-dimensional Fourier transform of the navigation echo in the reading direction, position information of the abdominal wall, for example, a position on an image in pixel units can be obtained.
- the amount of movement of the abdominal wall is, for example, monitoring which pixel the abdominal wall is in relation to FOV and calculating how much it has moved relative to a predetermined reference position 400, for example, the breathing level position of the expiration cycle. .
- the navigation sequence may be executed at the start of imaging, and the position of the abdominal wall at this time may be used as a reference position and calculated as the amount of movement relative thereto.
- the photographing slice position is corrected based on this movement amount. For example, as shown in FIG. 4, when the level is lowered with respect to the reference position 400 at the time of photographing at the third station, the shift amount of the slice position corresponding to the displacement amount is calculated.
- a navigation echo that is a reference at the time of capturing a scanano image may be acquired in the region 401.
- the breathing level when taking a scanano image is used as a reference.
- the displacement amount of the abdominal wall can be regarded as the shift amount of the slice position as it is, so the slice position is corrected in the AP direction by the same amount as the displacement amount of the abdominal wall. Take a picture.
- the slice position is corrected by the amount obtained by multiplying the detected amount of displacement by that ratio.
- the pulse sequence employed in the main imaging sequence 305 is not particularly limited, for example, a gradient echo high-speed sequence is employed. In either case, a high-frequency magnetic field is applied together with a slice selective gradient magnetic field in the AP direction to selectively excite a predetermined slice orthogonal to the AP direction and the phase encoder necessary for image reconstruction from that slice cursor. Measure the number of echo signals.
- the imaging slice position X is determined by the slice selection gradient magnetic field Gs applied together with the frequency V of the high-frequency magnetic field and the high-frequency magnetic field according to the following equation (1).
- the slice position can be corrected by adjusting the frequency V and ⁇ of the high-frequency magnetic field or the slice selective gradient magnetic field Gs.
- the slice selection gradient magnetic field Gs is fixed, and the slice position is shifted by changing the frequency V.
- the 6th station When breath holding is no longer necessary, that is, after the 4th station, without taking a navigation sequence, the 6th station performs shooting at the slice position (reference position) set at the beginning of the shooting. Complete the shooting until.
- the execution time of the navigation sequence is typically 20 to 30 ms, and the processing time for calculating the displacement due to respiratory motion from the navigator echo is typically 30 to 40 ms.
- Yo As a result, the overall shooting time is extended by [50 to 70 ms] X [Navigation sequence execution count].
- the navigation sequence since the navigation sequence is executed only at the second and third stations that are affected by respiratory motion, whole-body image data can be obtained without significantly extending the imaging time.
- FIG. 5A shows an operation procedure of the present embodiment
- FIG. 5B shows an example of a GUI suitable for implementing the present embodiment.
- an image (UI) showing the shooting section as shown in Fig. 5B is displayed on the display unit 108.
- Step 510 If the conditions for multi-station shooting are set in advance, the UI indicating the position of each station and the shooting section is displayed according to the conditions.
- the UI shows the arrangement of the bed and the subject and the imaging slice position. The user uses this UI to specify the station for breath-hold shooting and start shooting with force.
- stations 501 and 502 for photographing the chest and abdomen are selected, and these stations are shown surrounded by thick lines, for example.
- the bed is first moved to the first station (step 511), and shooting is performed.
- the first station performs normal photographing that is not breath-holding photographing (steps 512 and 513).
- the bed is moved to the second station 501 where non-breath-taking photography is performed.
- a display that allows the user to check the current station position and the currently shooting station position on the UI is displayed, and the user can know that the station has been taken for breath-hold shooting.
- the patient can have a voice or warning! / ⁇ can start taking a breath-holding instruction by flashing light or displaying a message.
- the subject may be instructed in advance to hold his / her breath from the station position, and the subject may spontaneously start holding his / her breath.
- the navigation sequence is first executed, and then the imaging sequence is executed at the slice position calculated from the body movement position detected by the navigation sequence (step 514). 515).
- the detection of displacement due to body movement by the navigation sequence and the breath-taking photographing at the slice position set based on the displacement amount are performed.
- normal shooting is performed (step 517), and shooting is terminated.
- a navigation sequence is executed in a station that requires breath-hold imaging, and based on the detected body movement position. Since the slice position of the main shooting is corrected and shooting is performed, it is possible to prevent level deviation between the station and the station that performs breath holding shooting, and level shift between stations that perform breath holding shooting, without performing breath holding shooting. All stations can shoot at the same level. In addition, since the navigation sequence is limited to stations that require breath-holding photography, it is possible to prevent a significant increase in photography time.
- the navigation sequence is known as a technique used for a body motion correction method when photographing the same region (for example, Patent Document 3), but in this embodiment, photographing involving bed movement is performed. Is characterized in that a navigation sequence is used as a body motion detection means for position alignment between stations and is applied to an area having a limited movement range.
- the means for detecting body movement is not limited to the navigation echo, and a body movement sensor such as a pressure sensor for detecting pressure fluctuations in the abdominal wall may be used instead of the navigation echo.
- a body movement sensor such as a pressure sensor for detecting pressure fluctuations in the abdominal wall
- the navigation echo is superior in terms of accuracy and ease of application in that the position information obtained by the signal processing unit can be directly applied to the actual photographing sequence.
- the force monitored by the navigation echo was the AP direction.
- the TR S cross section monitors the respiratory movement in the HF direction
- the SAG cross section monitors the respiratory movement in the RL direction. I ’m going to stop.
- this embodiment is an example in which breath-holding photographing is performed at a station affected by respiratory motion, and even under completely free breathing, photographing can be performed with the same control.
- the slice position may be corrected based on the navigation echo acquired at the time of scanning the scanano image.
- the navigation sequence is the same in areas where body motion is a problem, such as respiratory motion, but the slice in the direction orthogonal to the moving direction (HF direction) while moving the bed continuously. Shoot continuously.
- FIGS. 6 and 7 are diagrams showing the second embodiment, FIG. 6 is a diagram for explaining an imaging region, and FIG. 7 is a diagram for explaining an imaging procedure.
- the TRS cross section orthogonal to the body axis direction (HF direction) of the subject 101 is imaged while moving the bed continuously.
- an imaging method that is sufficiently fast with respect to the moving speed of the bed is adopted, and a sequence that measures the signal from one slice within the time that the bed can be considered to be stopped is adopted.
- imaging is performed, for example, by applying the head strength of the subject to the legs, and obtaining whole body image data.
- a navigation sequence 701 for detecting the body movement position is executed prior to imaging. Navigator In the sill sequence, as shown in FIG. 6, a region 601 where the diaphragm intersects is excited, and an echo signal (navigation echo) of phase encoding 0 is acquired from this region 601.
- an echo signal (navigation echo) of phase encoding 0 is acquired from this region 601.
- imaging slice position 704 is set based on abdominal wall position information 703 obtained in the navigation sequence, and imaging is performed.
- a high frequency magnetic field is applied together with a slice selection gradient magnetic field in the HF direction to selectively excite a predetermined slice orthogonal to the HF direction, and the number of phase encodings required for image reconstruction from that slice camera. Measure the echo signal.
- This imaging slice position is determined by the frequency of the high-frequency magnetic field and the slice selection gradient magnetic field applied together with the high-frequency magnetic field, and by controlling these, the slice position is corrected in accordance with the amount of movement in which the navigator echo force is also calculated.
- the displacement amount of the diaphragm is monitored by, for example, which pixel the diaphragm is located with respect to the FOV, and how much the diaphragm displacement is moved with respect to a predetermined reference position, for example, the position of the expiration period of the respiratory cycle. Is calculated. Alternatively, it is also possible to calculate the amount of movement relative to the position of the diaphragm as the reference position when the navigation sequence is started. For example, the slice 602 that was in the position shown in FIG. 6 (a) during the exhalation period has moved to the position shown in FIG. 6 (b) during the inspiration period, and selects a predetermined reference position.
- a signal from a slice 603 (dotted line) different from the slice to be shot is measured.
- the slice position is corrected by the detected displacement amount multiplied by the ratio.
- the slice position captured in the exhalation period and the inhalation period are captured. Therefore, the misregistration can be eliminated both when the breath holding photographing is not performed and when the breath holding photographing is performed.
- the slice position can be corrected by the same method even when the breath-hold levels in the multiple-breath-hold photographing are different. For example, as shown in Figure 8, if the first and second breath-hold levels are different, the slice acquired in the second breath-hold is shifted from the slice position 1203 without correction. Shoot at 1204, shifted by the amount (1205). By correcting the slice position in this way, it is possible to prevent the occurrence of ⁇ slices that are not shot due to a difference in breath-holding level or slices that are shot twice.
- FIG. 9 shows an operation procedure of the present embodiment
- FIG. 10 shows an example of a GUI suitable for implementing the present embodiment.
- an image (UI) showing a shooting section as shown in FIG. 10 is displayed on the display unit 108.
- UI a schematic image (scanogram) of the whole body of the subject imaged in advance can be used as the image showing the imaging section (step 1300).
- the UI shows the placement of the bed and the subject and the imaging slice position.
- the user designates a navigation sequence and an area for correcting the slice position (step 1301).
- the area may be specified with a cursor or the like as indicated by dotted lines 801 and 802 in the figure, and the left end or right end of the bed as a reference. Start and end navigation. Specify the end position with the numerical value 803.
- bed movement is started (step 1302).
- normal shooting is performed until the bed moves to the position 801 (steps 1303 and 1307).
- the control unit 111 that controls the imaging monitors the bed position detected by the bed movement amount detection means such as an encoder, and displays that the bed position has reached the area set for breath-holding imaging. That is, as in the first embodiment, the current bed position (imaging position) is displayed on the UI. Viewing this display, the operator issues a breath-hold instruction to the patient by voice, alarm, flashing light, message display, or the like. Alternatively, instruct the patient to hold his breath from position 801 in advance and let the patient start holding his breath spontaneously. Good.
- the navigation sequence 701 is automatically executed as shown in FIG.
- the actual shooting sequence 705 is executed at the calculated slice position (steps 1304 and 1305).
- the navigation sequence may be started in synchronization with the switching of the RF probes. In this case, it is desirable to display the RF probe in use on the UI so that the operator can issue a breath-hold instruction.
- the moving bed imaging in the case of imaging the TRS section is shown.
- the case of the COR section and the SAG section is also possible.
- the difference when the imaging section changes is that the direction of the respiratory motion monitored by the navigation echo is also changed according to the imaging section in order to move the slice position according to the respiratory motion.
- the direction monitored by the navigation echo was the H-F direction.
- the respiratory movement in the A-P direction is monitored, and in the SAG section, the respiratory movement in the R-L direction is monitored.
- the slice position should be corrected based on the navigation echo acquired when shooting the scanano image.
- the navigation sequence when moving bed shooting is performed, in a region where body movement is a problem, the navigation sequence is executed prior to shooting, and the detected body movement is thereby detected.
- the navigation sequence is executed only in the region where the body movement is a problem, it is possible to minimize the imaging time extension due to the navigation sequence.
- a bed is fixed at each station, and multiple TRS sections in the static magnetic field space are photographed.
- imaging is performed by shifting a plurality of slices captured at the station based on the displacement amount in the moving direction due to the body movement of the subject.
- the station to be taken for breath-holding can be set via the UI shown in FIG. 5 as in the first embodiment.
- the present invention since it is possible to acquire a whole body image that follows the breathing level of the subject, it is necessary to perform training for adjusting the breath holding level to the subject before breath holding photographing, No complicated instructions for adjusting the breathing level are required during stop-shooting. Furthermore, since it is possible to take pictures under free breathing, it is possible to cope with subjects who cannot hold their breath.
- FIG. 1 is a diagram showing an overall outline of an MRI apparatus to which the present invention is applied.
- FIG. 2 is a diagram for explaining a first embodiment of imaging by the MRI apparatus of the present invention.
- FIG. 3 is a diagram showing a procedure for breath-hold photographing according to the first embodiment.
- FIG. 4 is a diagram for explaining the operation of the first embodiment.
- FIG. 5A is a diagram showing an operation procedure of the first embodiment.
- FIG. 5B is a diagram showing an example of a GUI used in the first embodiment.
- FIG. 6 is a diagram for explaining a second embodiment of imaging by the MRI apparatus of the present invention.
- FIG. 7 is a diagram showing a procedure for breath-hold photographing according to the second embodiment.
- FIG. 8 is a view for explaining a plurality of breath-holding photographings in the second embodiment.
- FIG. 9 is a diagram showing a shooting procedure according to the second embodiment.
- FIG. 10 is a diagram showing an example of a GUI used in the second embodiment.
- FIG. 11 is a diagram for explaining conventional multi-station shooting and its problems.
- FIG. 12 is a diagram for explaining conventional moving bed photography and its problems.
- FIG. 13 is a diagram for explaining conventional moving bed photography and its problems.
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- High Energy & Nuclear Physics (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Signal Processing (AREA)
- Vascular Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006549010A JP4953823B2 (ja) | 2004-12-21 | 2005-12-20 | 磁気共鳴撮影方法および装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004369656 | 2004-12-21 | ||
JP2004-369656 | 2004-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006068149A1 true WO2006068149A1 (ja) | 2006-06-29 |
Family
ID=36601749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/023391 WO2006068149A1 (ja) | 2004-12-21 | 2005-12-20 | 磁気共鳴撮影方法および装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4953823B2 (ja) |
WO (1) | WO2006068149A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006288729A (ja) * | 2005-04-11 | 2006-10-26 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
JP2006320723A (ja) * | 2005-05-19 | 2006-11-30 | Siemens Ag | 磁気共鳴スペクトロメータ内の検査ボリュームの撮像方法 |
WO2007119192A1 (en) * | 2006-04-13 | 2007-10-25 | Koninklijke Philips Electronics N.V. | Mri of a continuously moving object involving motion compensation |
JP2007301295A (ja) * | 2006-05-15 | 2007-11-22 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
JP2008148918A (ja) * | 2006-12-18 | 2008-07-03 | Ge Medical Systems Global Technology Co Llc | Mri装置およびその制御方法 |
JP2008154887A (ja) * | 2006-12-26 | 2008-07-10 | Ge Medical Systems Global Technology Co Llc | Mri装置 |
JP2009148463A (ja) * | 2007-12-21 | 2009-07-09 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
JP2012070982A (ja) * | 2010-09-29 | 2012-04-12 | Ge Medical Systems Global Technology Co Llc | 磁気共鳴イメージング装置 |
CN103458780A (zh) * | 2011-04-01 | 2013-12-18 | 株式会社日立医疗器械 | 磁共振成像装置以及磁共振成像方法 |
JP2020168196A (ja) * | 2019-04-03 | 2020-10-15 | キヤノンメディカルシステムズ株式会社 | 画像再構成方法及び再構成装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0435645A (ja) * | 1990-05-31 | 1992-02-06 | Toshiba Corp | 磁気共鳴イメージング装置 |
JP2001299725A (ja) * | 2000-03-27 | 2001-10-30 | Ge Medical Systems Global Technology Co Llc | 保息式腹部mr撮像のためのスライスの順序付けの方法 |
JP2002010992A (ja) * | 2000-04-25 | 2002-01-15 | Toshiba Corp | 磁気共鳴イメージング装置及び磁気共鳴イメージング方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63272335A (ja) * | 1986-11-18 | 1988-11-09 | Toshiba Corp | 磁気共鳴イメ−ジング装置 |
JP2001198100A (ja) * | 2000-01-20 | 2001-07-24 | Ge Medical Systems Global Technology Co Llc | Mrデータ収集方法、mr画像表示方法およびmri装置 |
-
2005
- 2005-12-20 WO PCT/JP2005/023391 patent/WO2006068149A1/ja not_active Application Discontinuation
- 2005-12-20 JP JP2006549010A patent/JP4953823B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0435645A (ja) * | 1990-05-31 | 1992-02-06 | Toshiba Corp | 磁気共鳴イメージング装置 |
JP2001299725A (ja) * | 2000-03-27 | 2001-10-30 | Ge Medical Systems Global Technology Co Llc | 保息式腹部mr撮像のためのスライスの順序付けの方法 |
JP2002010992A (ja) * | 2000-04-25 | 2002-01-15 | Toshiba Corp | 磁気共鳴イメージング装置及び磁気共鳴イメージング方法 |
Non-Patent Citations (5)
Title |
---|
CHOYKE P. ET AL.: "Continuously Acquired Moving Table MRI: A Method for Rapid Whole Body Scanning", PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE 10TH SCIENTIFIC MEETINGS AND EXHIBITION, 2002, pages 560, XP003004527 * |
ICHIBA N. ET AL.: "Zenshin MRI no Rinsho Oyo", INNERVISION, vol. 19, no. 9, 25 August 2004 (2004-08-25), pages 49 - 51, XP003004526 * |
KORIN H.W. ET AL.: "Adaptive Technique for Three-dimensional MR Imaging of Moving Structures", RADIOLOGY, vol. 177, no. 1, 1990, pages 217 - 221, XP003004529 * |
KRUGER D.G. ET AL.: "Continuously moving table data acquisition method for long FOV contrast-enhanced MRA and whole-body MRI", MAGNETIC RESONANCE IN MEDICINE, vol. 47, no. 2, 2002, pages 224 - 231, XP002290063 * |
LUDWIG U.A. ET AL.: "COmparison of Stationary and Moving Surface Coil Setups for Continuously Moving Table MRI", PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE 12TH SCIENTIFIC MEETINGS AND EXHIBITION, May 2005 (2005-05-01), pages 2670, XP003004528 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006288729A (ja) * | 2005-04-11 | 2006-10-26 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
JP2006320723A (ja) * | 2005-05-19 | 2006-11-30 | Siemens Ag | 磁気共鳴スペクトロメータ内の検査ボリュームの撮像方法 |
WO2007119192A1 (en) * | 2006-04-13 | 2007-10-25 | Koninklijke Philips Electronics N.V. | Mri of a continuously moving object involving motion compensation |
JP2007301295A (ja) * | 2006-05-15 | 2007-11-22 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
JP2008148918A (ja) * | 2006-12-18 | 2008-07-03 | Ge Medical Systems Global Technology Co Llc | Mri装置およびその制御方法 |
JP2008154887A (ja) * | 2006-12-26 | 2008-07-10 | Ge Medical Systems Global Technology Co Llc | Mri装置 |
JP2009148463A (ja) * | 2007-12-21 | 2009-07-09 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
JP2012070982A (ja) * | 2010-09-29 | 2012-04-12 | Ge Medical Systems Global Technology Co Llc | 磁気共鳴イメージング装置 |
CN103458780A (zh) * | 2011-04-01 | 2013-12-18 | 株式会社日立医疗器械 | 磁共振成像装置以及磁共振成像方法 |
JP2020168196A (ja) * | 2019-04-03 | 2020-10-15 | キヤノンメディカルシステムズ株式会社 | 画像再構成方法及び再構成装置 |
JP7292930B2 (ja) | 2019-04-03 | 2023-06-19 | キヤノンメディカルシステムズ株式会社 | 画像再構成方法及び再構成装置 |
Also Published As
Publication number | Publication date |
---|---|
JP4953823B2 (ja) | 2012-06-13 |
JPWO2006068149A1 (ja) | 2008-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4953823B2 (ja) | 磁気共鳴撮影方法および装置 | |
JP5105848B2 (ja) | 磁気共鳴イメージング装置および磁気共鳴イメージング装置における撮影条件設定方法 | |
JP2007029250A (ja) | 磁気共鳴イメージング装置 | |
JP6008839B2 (ja) | 磁気共鳴イメージング装置および磁気共鳴イメージング方法 | |
JP5591545B2 (ja) | 磁気共鳴映像装置 | |
JP6151697B2 (ja) | 磁気共鳴イメージング装置及び磁気共鳴イメージング方法 | |
JPWO2006046639A1 (ja) | 核磁気共鳴撮像装置 | |
US8461837B2 (en) | Magnetic resonance method and apparatus with display of data acquisition progress for a subject continuously moving through the apparatus | |
US8358130B2 (en) | Magnetic resonance method and apparatus for acquiring measurement data from a subject continuously moving through the apparatus | |
JP2006320527A (ja) | 磁気共鳴イメージング装置 | |
JP5106697B2 (ja) | 磁気共鳴イメージング装置 | |
JP3836424B2 (ja) | 磁気共鳴撮影装置 | |
JP3895972B2 (ja) | 磁気共鳴映像化装置 | |
US9063205B2 (en) | Method and magnetic resonance apparatus for image data acquisition | |
JP4711732B2 (ja) | 磁気共鳴撮影装置 | |
US20080218167A1 (en) | Magnetic resonance imaging apparatus and magnetic resonance imaging method | |
WO2006109472A1 (ja) | 核磁気共鳴撮像装置および方法 | |
JP5064721B2 (ja) | 磁気共鳴イメージング装置 | |
JP6827813B2 (ja) | 医用画像診断装置 | |
JP4519827B2 (ja) | 磁気共鳴映像化装置 | |
JP2021180765A (ja) | 磁気共鳴イメージング装置及びその制御プログラム | |
US11766188B2 (en) | Magnetic resonance imaging device | |
JP4763429B2 (ja) | 磁気共鳴イメージング装置 | |
JP2008148918A (ja) | Mri装置およびその制御方法 | |
US7365541B2 (en) | MRI apparatus which automatically determines and displays operating instructions |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006549010 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: COMMUNICATION PURSUANT TO RULE 69(1) EPC (FORM 1205A) SENT 13.09.2007. |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 05820085 Country of ref document: EP Kind code of ref document: A1 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 5820085 Country of ref document: EP |