KR20070031804A - Breath holding mr imaging method, mri apparatus, breath holding tomographic imaging method, and tomographic imaging apparatus - Google Patents

Abstract

When respiratory stop imaging of two or more runs with a breathing interval in between is performed, the present invention allows the slice position to follow the positional displacement of the trachea in each run. The present invention provides an image capturing step for a navigator for capturing an MR image having an imaging area including the diaphragm during respiratory arrest, a diaphragm position obtaining step for acquiring the diaphragm position by analyzing the navigator image, and an MR of a desired slice during respiratory arrest. An image capturing step for the actual capture of the image and a breathing interval step to release the breath, which steps are repeated two or more times. The second session or later slice position is made such that the slice position of the first run is set to be compensated for by the difference between the diaphragm position of the first run and the second or subsequent diaphragm position.

Description

BRETH HOLDING MR IMAGING METHOD, MRI APPARATUS, BREATH HOLDING TOMOGRAPHIC IMAGING METHOD, AND TOMOGRAPHIC IMAGING APPARATUS}

1 is a schematic block diagram showing an outline of an MRI apparatus according to a first preferred embodiment of the present invention;

2 is a flowchart showing a scanning process for repeatedly repeating a breath stop according to the first preferred embodiment of the present invention;

3 is a timing chart showing respiratory stop photography according to the first preferred embodiment of the present invention;

4 is a schematic diagram showing displacement of an organ due to timing differences in respiratory arrest.

Explanation of symbols for the main parts of the drawings

101: magnet assembly 102: static magnetic field power supply

103: gradient coil driver circuit 104: RF power amplifier

105: preamplifier 106: display unit

107 computer 108 sequence memory circuit

109: gate modulator circuit 110: RF oscillator circuit

111: selector 112: receiver

113: console

The present invention relates to a breath holding magnetic resonance (MR) imaging method, a magnetic resonance imaging (MRI) device, a respiratory stop tomography method, and a tomography device, wherein a slice position has a breath release time in between. in a respiratory stop MR imaging method, an MRI device, a respiratory stop tomography method and a tomography device, which allows to follow the displacement of an organ between two or more repetitive imaging sessions of breath stop imaging with a breath releasing time. It is about.

Up to now, in the case of two or more respiratory stop photographing sessions having a respiration release interval in between, a method has been proposed to instruct respiratory arrest at the moment when the diaphragm is in the same position by observing the position of the diaphragm (e.g., Patent Document 1) cited below.

On the other hand, when respiration stop photography is not performed (a breathing session in which breathing is not stopped), a method has been proposed in which the slice position is moved to follow the amount of displacement by detecting the displacement of the subject caused by respiration ( For example, Patent Document 2) cited below.

Patent Document 1: JP-A-2004-508859 (claim 8, [0008])

Patent Document 2: JP-A-2004-305454 (claim 6, [0048]-[0050])

In Patent Document 1 cited above, a technique for instructing stop of breathing at the moment when the diaphragm is in the same position is not specifically disclosed. When the subject is signaled to stop breathing at the moment when the diaphragm is in the same position, as long as the subject voluntarily stops breathing at the subject's will, the change in respiratory stop timing continues, and the position of the diaphragm stops breathing. Will be displaced at the actual timing. This presents the problem that the position of the organ relative to the slice position changes every hour.

On the other hand, in Patent Document 2 cited above, the slice position adjustment is mainly applied to the non-breathing still picture session, and not to the breath still picture session. However, if there are two or more repetitive respiratory shooting sessions with respiratory intervals in between, fluctuations in respiratory arrest timing in each session can persist, and finally the position of the diaphragm changes at the moment the breath is actually stopped. Will be. This also provides a problem in patent document 2 that the position of the organ relative to the slice position can be changed every hour of the respiratory stop imaging session.

Accordingly, an object of the present invention is to allow a slice position to follow the positional displacement of an organ every hour where two or more respiratory arrest imaging sessions with respiratory release intervals are performed in between, respiratory arrest MR imaging method, MRI apparatus, respiratory arrest A tomography method and a tomography device are provided.

In a first aspect of the present invention, the present invention provides a method for respiratory arrest MR imaging, which method comprises: an image capture step for a navigator for photographing an MR image having an imaging area including the diaphragm during respiratory arrest; A diaphragm position acquiring step of obtaining diaphragm position by analyzing, an image capturing step for actual photographing to take an MR image of a desired slice during respiratory arrest, and a breath release interval step for emitting a breath, which steps are in this order Repeated twice or more, and the second session or later slice position is set such that the slice position of the first run is compensated for by the difference between the diaphragm position of the first run and the diaphragm position of the second run or later. It is made to be a location.

In the respiratory stop MR imaging method according to the first aspect as described above, the position of the diaphragm at the time of respiration stop is detected, and the slice position corresponding to the position of the diaphragm is compensated. In this way, when two or more respiratory arrest imaging sessions with respiratory release intervals are performed in between, the slice position may follow the positional displacement of the organ caused by the change in respiratory arrest timing in each session.

In a second aspect of the invention, the invention provides a respiratory stop MR imaging method according to the first aspect, wherein the imaging area of the image capturing step for the navigator is in the form of a line extending along the body axis.

The diaphragm displacement due to respiration is three-dimensional, but the fundamental direction of the displacement lies in the direction of the body axis. Therefore, it is effective enough to obtain displacement in the body axis direction.

For this reason, in the respiratory stop MR imaging method according to the second aspect of the present invention, the imaging area in the image capturing step for the navigator is in the form of a line in the body axis direction. This requires minimal data acquisition and calculation.

In a third aspect of the invention, the invention provides a respiratory stop MR imaging method, wherein prior to an image capture step for actual imaging in the respiratory stop MR imaging method according to the first or second aspect of the invention, A restoration step is provided for waiting at least 1 second for the remaining lateral magnetization component to be restored to vertical magnetization.

In the respiratory stop MR imaging method according to the third aspect of the present invention, the effect of the image capturing step for the navigator on the image capturing step for actual shooting is prevented.

In a fourth aspect of the present invention, the present invention provides a respiratory stop MR imaging method, wherein an image capture step for actual imaging in the respiratory stop MR imaging method according to any one of the first to third aspects of the present invention. Previously, a fast recovery step for forcibly restoring the residual lateral magnetization component to vertical magnetization is provided.

In the respiratory stop MR imaging method according to the fourth aspect of the present invention, the effect of the image capturing step for the navigator on the image capturing step for actual shooting is prevented.

In a fifth aspect of the present invention, the present invention provides a respiratory stop MR imaging method according to any one of the first to fourth aspects, wherein the image capturing step for the navigator and the image capturing step for the actual photographing are inverse centers. Use reverse centric view ordering.

In the respiratory stop MR imaging method according to the fifth aspect of the present invention, the effect of the image capturing step for the navigator on the image capturing step for actual shooting is prevented.

In a sixth aspect of the invention, the invention provides a method for respiratory arrest MR imaging according to any one of the first to fifth aspects of the invention, wherein contrast MR vessels of abdominal imaging in an image capture step for actual imaging Angiography is performed.

In the respiratory stop MR imaging method according to the sixth aspect of the present invention, the imaging position with respect to the trachea is the same every hour, and an accurate time intensity curve can be obtained. In addition, an accurate subtraction image can be obtained.

In a seventh aspect of the present invention, the present invention provides a method for respiratory arrest MR imaging according to any one of the first to fifth aspects of the present invention, wherein multiple liver of the liver is captured in an image capturing step for actual imaging. Phase imaging (arterial phase, portal vein phase, equilibrium phase) is performed.

In the respiratory stop MR imaging method according to the seventh aspect of the present invention, the imaging position for the liver is the same every hour, so that the comparison between phases can be performed accurately.

In an eighth aspect of the invention, the invention provides a method of respiratory arrest MR imaging according to any one of the first to fifth aspects of the invention, wherein the body in a first run of an image capture step for actual imaging Decreased compensation imaging is performed using the coil, and image capture for the actual image is performed after or after the second run of the image capture step for actual imaging.

In the breath stop MR imaging method according to the eighth aspect of the present invention, the slice position at the time of capturing the sensitivity-compensated image may be the same as the slice position at the time of image capture for the actual image with respect to the organ.

In a ninth aspect of the invention, the invention provides a respiratory stop MR imaging method according to any one of the first to fifth aspects of the invention, wherein the reference image is in a first run of an image capture step for actual imaging Is captured and an image for parallel imaging is captured after or after the second run of the image capture step for actual shooting.

In the respiratory stop MR imaging method according to the ninth aspect of the present invention, the slice position of the reference image and the slice position at the time of parallel imaging may be the same with respect to the organ.

In a tenth aspect of the present invention, the present invention provides a respiratory stop MR imaging method according to any one of the first to fifth aspects of the present invention, wherein by changing the shooting conditions every hour in the image capturing step for actual imaging , An image for image fusion is captured.

In the respiratory arrest MR imaging method according to the tenth aspect of the present invention, error registration can be eliminated.

In an eleventh aspect of the present invention, the present invention provides a respiratory stop MR imaging method according to any one of the first to fifth aspects of the present invention, wherein the image for distributed image in the image capture step for actual imaging Capture is performed.

In the respiratory stop MR imaging method according to the eleventh aspect of the present invention, when the NEX is increased, any distortion can be omitted.

In a twelfth aspect of the present invention, the present invention provides an MRI device, which device comprises image capturing means for a navigator for capturing an MR image having an imaging area including the diaphragm during respiratory arrest, and a diaphragm by analyzing the navigator image. Diaphragm position acquiring means for acquiring a position, image capturing means for actual imaging to capture an MR image of a desired slice during respiratory arrest, controller means for repeatedly operating the means for at least two times with a breathing interval therebetween; And a compensator means for causing the position at which the slice position of the first run is set to be compensated by the difference between the diaphragm position of the first run and the second or later diaphragm position to be the slice position of the second run or later. do.

In the MRI apparatus according to the twelfth aspect of the present invention, the respiratory stop MR imaging method according to the first aspect of the present invention can be appropriately implemented.

In a thirteenth aspect of the present invention, the present invention provides an MRI apparatus according to the MRI apparatus of the twelfth aspect of the present invention, wherein the photographing area in the image capturing step for the navigator is in the form of a line extending along the body axis direction to be.

In the MRI apparatus according to the thirteenth aspect of the present invention, the respiratory stop MR imaging method according to the second aspect of the present invention can be appropriately implemented.

In a fourteenth aspect of the present invention, the present invention provides an MRI apparatus according to the MRI apparatus of the twelfth or thirteenth aspect, wherein the remaining lateral direction to be restored to vertical magnetization before operating an image capturing means for actual imaging Restoration time is provided to wait at least 1 second for the magnetization component.

In the MRI apparatus according to the fourteenth aspect of the present invention, the respiratory stop MR imaging method according to the third aspect of the present invention can be appropriately implemented.

In a fifteenth aspect of the present invention, the present invention provides an MRI apparatus according to the MRI apparatus of any one of the twelfth to fourteenth aspects, wherein the residual lateral magnetization component, before operating the image capturing means for actual imaging, Fast recovery means for forcibly restoring the device to vertical magnetization is operated.

In the MRI apparatus according to the fifteenth aspect of the present invention, the respiratory stop MR imaging method according to the fourth aspect of the present invention can be appropriately implemented.

In a sixteenth aspect of the invention, the invention provides an MRI device according to the MRI device of any one of the twelfth to fifteenth aspects of the invention, wherein the image capture step for the navigator and the image capture step for the actual imaging Uses inverse center view ordering.

In the MRI apparatus according to the sixteenth aspect of the present invention, the respiratory stop MR imaging method according to the fifth aspect of the present invention can be appropriately implemented.

In a seventeenth aspect of the present invention, the present invention provides a respiratory arrest MR imaging method for performing contrast MR angiography of abdominal imaging using the MRI apparatus according to the twelfth to sixteenth aspects of the present invention.

In the respiratory stop MR imaging method according to the seventeenth aspect of the present invention, the respiratory stop MR imaging method according to the sixth aspect of the present invention can be appropriately implemented.

In an eighteenth aspect of the present invention, the present invention provides a respiratory arrest MR imaging method by an MRI apparatus according to any one of the twelfth to sixteenth aspects of the present invention, wherein multi-phase image capture of the liver is performed.

In the breath stop MR imaging method according to the eighteenth aspect of the present invention, the breath stop MR imaging method according to the seventh aspect of the present invention can be appropriately implemented.

In the nineteenth aspect of the present invention, the present invention provides a sensitivity using the body coil in the first run of the image capturing step for actual imaging, using the MRI apparatus according to any one of the twelfth to sixteenth aspects of the present invention. A respiratory stop MR imaging method is provided for performing compensation imaging and performing image capture for an actual image after or after the second run of the image capture step for actual imaging.

In the respiratory stop MR imaging method according to the nineteenth aspect of the present invention, the respiratory stop MR imaging method according to the eighth aspect of the present invention can be appropriately implemented.

In the twentieth aspect of the present invention, the present invention uses the MRI apparatus according to any one of the twelfth to sixteenth aspects of the present invention to perform a reference image capture in the first run of the image capturing step for actual imaging, A respiratory stop MR imaging method of performing parallel image capture after or after a second run of an image capture step for actual imaging.

In the respiratory stop MR imaging method according to the twentieth aspect of the present invention, the respiratory stop MR imaging method according to the ninth aspect of the present invention can be appropriately implemented.

In the twenty-first aspect of the present invention, the present invention provides a respiratory arrest MR imaging in which an image capture for image integration is performed by changing the shooting conditions every hour, using the MRI apparatus according to any one of the twelfth to sixteenth aspects of the present invention. Provide a method.

In the respiratory stop MR imaging method according to the twenty-first aspect of the present invention, the respiratory stop MR imaging method according to the tenth aspect of the present invention can be appropriately implemented.

In a twenty-second aspect of the present invention, the present invention provides a respiratory stop MR imaging method for performing image capture for a distributed image using the MRI apparatus according to any one of the twelfth to sixteenth aspects of the present invention.

In the breath stop MR imaging method according to the twenty-second aspect of the present invention, the breath stop MR imaging method according to the eleventh aspect of the present invention can be appropriately implemented.

In a twenty-third aspect of the present invention, the present invention provides a respiratory stop tomography method, which method comprises: an image capture step for a navigator for capturing a tomographic image having an imaging area including the diaphragm during respiratory arrest; A diaphragm position acquiring step of obtaining diaphragm position by analyzing, an image capturing step for actual imaging capturing a tomographic image of a desired slice during respiratory arrest, and a breathing step releasing breath, which steps are in this order 2 Repeated more than once, the second session or later slice position is such that the slice position of the first run is set such that the slice position of the first run is compensated for by the difference between the diaphragmatic position of the first run and the second or subsequent diaphragm position. It is made as possible.

In the respiratory stop tomography method according to the twenty-third aspect of the present invention, the diaphragm position is detected while stopping breathing, and the slice position is compensated accordingly to correspond to the detected diaphragm position. When two or more consecutive breath still images with breathing intervals in between are performed, the slice position may follow the displacement of the trachea in each run.

In a twenty-fourth aspect of the present invention, the present invention provides a tomography apparatus, the apparatus comprising: photographing means for a navigator for capturing tomographic images having a photographing area comprising a diaphragm in the direction of the body axis during respiratory arrest; Means for acquiring the diaphragm position by analyzing the diaphragm position, photographing means for actual imaging for capturing the tomographic image of the desired slice during respiratory arrest, and repetitively operating the means for two or more times with a breathing interval therebetween. The compensator which makes the controller means and the position at which the slice position of the first run is compensated by the difference between the diaphragm position of the first run and the second or later diaphragm position become the second or later slice position. Means;

In the tomography apparatus according to the twenty-fourth aspect of the present invention, the respiratory stop tomography method according to the twenty-third aspect of the present invention can be appropriately implemented. As can be seen from the foregoing, the tomography apparatus may include an X-ray CT apparatus in addition to the MRI apparatus.

According to the respiratory stop MR imaging method, the MRI apparatus, the respiratory stop tomography method and the tomography apparatus of the present invention, when respiration stop imaging for two or more times with a breathing interval therebetween, the slice position will follow the positional displacement of the trachea. Can be.

The respiratory stop MR imaging method, the MRI apparatus, the respiratory stop tomography method, and the tomography apparatus according to the present invention acquire a tomographic image of a subject by repeatedly repeating two or more respiratory still image capture sessions having a respiration interval therebetween. It can be used to

Other objects and advantages of the invention will be apparent from the description of the preferred embodiment of the invention as illustrated in the accompanying drawings.

The invention will be described in more detail with reference to the preferred embodiment shown in the accompanying drawings. It should be understood that the preferred embodiment shown is not a limitation of the present invention.

[First Embodiment]

1, there is shown a schematic block diagram illustrating an MRI apparatus 100 according to a first preferred embodiment of the present invention.

In this MRI apparatus 100, the magnet assembly 101 includes a central void (bore) that carries the subject therein. The periphery of the bore excites a static magnetic field coil 101C for applying a constant magnetic field to the subject, a gradient coil 101G for generating a gradient magnetic field in the X, Y, and Z directions, and spin of an atomic nucleus in the subject. Transmitter coil 101T for transmitting the RF pulse for the purpose and a plurality of receiver coils (101 (0) ... 101 (I)) for receiving the NMR signal from the subject.

The transmitter coil 101T and the receiver coil 101 (0) are body coils, and the receiver coils 101 (1) ... 101 (I) are surface coils.

The static magnetic field coil 101C, the gradient coil 101G, and the transmitter coil 101T are connected to the static magnetic field power supply 102, the gradient coil driver circuit 103, and the RF power amplifier 104, respectively. Receiver coils 101 (0) ... 101 (I) are connected to preamplifiers 105 (0) ... 105 (I), respectively.

Permanent magnets may be used in place of the static magnetic field coil 101C.

The sequence memory circuit 108 generates a gradient magnetic field from the gradient coil 101G by operating the gradient coil driver circuit 103 based on a pulse sequence stored therein under the control of the computer 107, thereby generating a gate modulator circuit. 109 to modulate the carrier output signal of the RF oscillator circuit 110 into a pulse signal having a predefined timing, a predetermined envelope shape, and a predetermined phase, as an RF pulse to the RF power amplifier 104. The RF power amplifier 104 amplifies the power output and applies the amplified power to the transmitter coil 101T.

The selector 111 receives the NMR signals amplified by the preamplifiers 105 (0) ... 105 (I) after being received by the receiver coils 101 (0) ... 101 (I). Transmit to receiver 112 (1) ... 112 (m). This solution is to arbitrarily change the combination of the receiver coils 101 (0)... 101 (I) and the receivers 112 (1) ... 112 (m).

Receivers 112 (1) ... 112 (m) convert the NMR signals into digital signals and input them to the computer 107.

The computer 107 reads the digital signal from the receiver 112 and processes it to generate an MR image. In addition, the computer 107 performs a whole machine relationship such as receiving information input from the console 113.

The display unit 106 displays the picture and the message.

Referring now to FIG. 2, there is shown a flow diagram illustrating a respiratory arrest MR imaging process in accordance with a first preferred embodiment of the present invention.

In step J1, the value at the iteration counter i is initialized to "1".

In step J2, the patient is signaled to stop breathing, and if the patient stops breathing, processing proceeds to the next step J3.

In step J3, using the pulse sequence for the navigator, data Ni for the navigator is collected. Reference numeral K1 shown in FIG. 3 corresponds to step J3 for the first run (i = 1) and K4 corresponds to step J3 for the second run (i = 2).

The purpose of collecting the navigator data Ni is to detect the diaphragm position Pi. In this description, for the sake of simplicity, it is assumed that the photographing area is in the shape of a line extending along the body axis. Thus, the navigator pulse sequence can use a well-known pulse sequence that can excite a line-shaped imaging area. Since the displacement amount in the direction of the body axis is approximately 2 cm, the length of the imaging area may be longer than 2 cm in the body axis direction.

In step J4, the diaphragm position Pi is obtained from the navigator data Ni. Reference numeral C1 in FIG. 3 corresponds to step J4 in the first run (i = 1), and reference number C3 corresponds to step J4 in the second run (i = 2). Reference number P1 shown in FIG. 4 (a) indicates the position P1 of the diaphragm D during the first run (i = 1), and reference number P2 shown in FIG. 4 (c) indicates the run i after the second run (i). The position Pi of the diaphragm D at time> 2) is shown.

In step J5, the difference Δi between the position P1 of the diaphragm D in the first run (i = 1) and the position Pi of the diaphragm D in the i run (i ≧ 1) is determined, and the slice for the i run is determined. To set the position S1, the predefined slice position is compensated by the difference Δi. In the first run i = 1, the difference? 1 = 0, so the predefined slice position will be the slice position S1 for the first run. If the difference Δi ≠ 0 in the run i> 2 after the second run, the slice position will be compensated. Reference numeral S1 shown in FIG. 4 (b) indicates the slice position S1 in the first run (i = 1), and reference number Si shown in FIG. 4 (d) denotes the run (i> 2) after the second run. The slice position Si at the time of) is shown.

In step J6, the process waits for restoration of magnetization excited by the navigator pulse sequence, to proceed to step J7. This waiting period is the vertical magnetization restoration period shown in FIG. The vertical magnetization restoration period may be longer than 1 second, for example 2 seconds. However, by using one of the well-known fast recovery methods, for example, by applying a fast recovery pulse such as K2 and K5 shown in Fig. 3, if the residual lateral magnetization component is forcedly restored to vertical magnetization, the vertical The magnetization restoration period can be shortened or omitted. In addition, when the image capture for actual shooting uses inverse center view ordering that suppresses banding artifacts as described below, the vertical magnetization restoration time can be shortened or omitted.

In step J7, the imaging data sequence at the slice position Si is collected using the imaging pulse sequence. Reference numeral K3 shown in FIG. 3 corresponds to step J7 in the first run (i = 1), and reference number K6 corresponds to step J7 in the second run (i = 2).

In step J8, the patient is instructed to breathe, causing the patient to breathe.

In step J9, when the value of the counter i reaches the planned number of iterations I, the scan process will end, otherwise the process proceeds to step J10.

In step J10, after the value of the counter i is increased by '1', the process goes back to step J2.

While the patient is breathing, the image may be reconstructed, such as C2 and C5 shown in FIG. 3.

According to the MRI apparatus 100 of the first preferred embodiment, the slice position may follow the positional displacement of the trachea due to the respiratory stop timing difference between the runs. This can achieve the following effects.

(1) In image capture J7 for actual shooting, when abdominal contrast MR angiography is performed to obtain a time intensity curve, since the shooting positions of all runs are the same with respect to the trachea, an accurate time intensity curve can be obtained. have. In addition, when it is desired to acquire a subtracted image, an accurate subtracted image can be obtained.

(2) In the image capture J7 for actual shooting, when multi-phase imaging of the liver L as shown in Fig. 4 (ie, arterial phase, portal phase, equilibrium phase), the slice position Si of all runs is liver L Since it is the same for, the comparison between the phases can be performed accurately.

(3) Sensitivity compensated photographing using the body coil 101 (0) in the first run of image capturing step J7 for actual photographing, and surface coil 101 (1) in the second run of image capturing step J7 for real photographing. In the image capture for actual shooting using 101 (I)), since the slice position in the sensitivity compensation shooting and the slice position in the image capturing for the actual shooting are the same, sensitivity compensation can be performed accurately. Can be. This is particularly effective for shooting methods such as PURE and CLEAR.

(4) When the image for the reference image is captured in the first run of the image capturing step J7 for actual shooting, and the image for the parallel shooting after the second run of the image capturing step J7 for the actual shooting, and then, Since the slice position for the reference image and the slice position for parallel imaging are the same, parallel imaging can be performed accurately. This is particularly effective for shooting methods such as ASSET and SENSE.

(5) Image Capture for Actual Shooting When an image for image integration is captured while changing shooting conditions in step J7, the slice positions for all runs are always the same, so that the error registration is removed.

(6) Image Capture for Actual Shooting When an image for diffuse shooting with increased NEX is captured in step J7, distortion in the diffused image can be avoided.

Second Embodiment

The present invention can be equally applied to any tomography apparatus other than the MRI apparatus.

Many different embodiments of the invention can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not limited to the specific embodiments described herein except as defined in the appended claims.

According to the present invention, a respiratory stop MR imaging method, MRI apparatus, respiratory arrest tomography, which allows the slice position to follow the displacement of the organ between two or more repetitive imaging sessions of respiratory stop imaging with a respiration release time in between An imaging method and a tomography apparatus can be provided.

Claims (10)

In a breath holding MR imaging method, An image capturing step for a navigator for capturing an MR image having a photographing area comprising a diaphragm during respiratory arrest; A diaphragm position obtaining step of obtaining the diaphragm position by analyzing the navigator image, An image capture step for actual shooting, taking MR images of desired slices during breathing stops, A breath release interval step of releasing breath, The steps are repeated two or more times in this order, The second session or later slice position is such that the slice position of the first run is set to be compensated by the difference between the diaphragm position of the first run and the diaphragm position of the second run or later. Made Respiratory arrest MR method. The method of claim 1, And the imaging area of the image capturing step for the navigator is in the form of a line extending along the body axis. The method according to claim 1 or 2, A respiratory arrest MR imaging method is provided before the image capturing step for the actual imaging, wherein a reconstruction step is provided for waiting for at least 1 second for a residual lateral magnetized component to be reconstructed into vertical magnetization. The method according to any one of claims 1 to 3, Before the image capturing step for the actual imaging, a fast restoring MR photographing method is provided for forcibly restoring a residual lateral magnetization component to vertical magnetization. The method according to any one of claims 1 to 4, The image capturing step for the navigator and the image capturing step for the actual photographing method use reverse centric view ordering. In the MRI apparatus 100, An image capture device for a navigator for capturing an MR image having an imaging area including the diaphragm during respiratory arrest; A diaphragm position obtaining device for obtaining the diaphragm position by analyzing the navigator image; An image capture device for real shooting to capture MR images of desired slices during breathing stops, A controller device for repeatedly operating the device for at least two times with a breathing interval therebetween, A compensator device such that a position at which a slice position of a first run is set to be compensated by a difference between the diaphragm position of the first run and the diaphragm position of a second run or later is a slice position of a second run or later Containing MRI device. The method of claim 6, The photographing area of the image capturing step for the navigator is in the form of a line extending along the body axis. The method according to claim 6 or 7, A MRI apparatus is provided for waiting for at least 1 second for the remaining lateral magnetization component to be restored to vertical magnetization before operating the image capture device for actual imaging. In the respiratory arrest tomography method, An image capture step for a navigator to capture a tomographic image having an imaging area including the diaphragm during respiratory arrest; A diaphragm position obtaining step of obtaining the diaphragm position by analyzing the navigator image, An image capture step for actual shooting that captures tomographic images of desired slices during breathing stops, A breathing step that releases breathing, The steps are repeated two or more times in this order, The second session or later slice position is made such that the slice position of the first run is set to be compensated for by the difference between the diaphragm position of the first run and the diaphragm position of the second run or later. Respiratory arrest tomography method. In the tomography apparatus 100, An imaging device for a navigator for capturing tomographic images having an imaging area including the diaphragm in the direction of the body axis during respiratory arrest; A diaphragm position obtaining device for obtaining the diaphragm position by analyzing the navigator image; An imaging device for real shooting to capture tomographic images of desired slices during respiration, A controller device for repeatedly operating the device for at least two times with a breathing interval therebetween, A compensator such that the position where the slice position of the first run is set to be compensated by the difference between the diaphragm position of the first run and the diaphragm position of the second run or later is the slice position of the second run or later Containing device Tomography device.

Images