CN102309322B - Method for positioning three axial positions of fetal brain through nuclear magnetic resonance - Google Patents
Method for positioning three axial positions of fetal brain through nuclear magnetic resonance Download PDFInfo
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- CN102309322B CN102309322B CN2011100787719A CN201110078771A CN102309322B CN 102309322 B CN102309322 B CN 102309322B CN 2011100787719 A CN2011100787719 A CN 2011100787719A CN 201110078771 A CN201110078771 A CN 201110078771A CN 102309322 B CN102309322 B CN 102309322B
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Abstract
The invention relates to a method for positioning three axial positions of a fetal brain through magnetic resonance. The method is used for further rapidly, accurately and normatively positioning an image of the three axial positions of the fetal brain on the basis of the traditional nuclear magnetic resonance scanning and positioning technology and providing a more accurate and normative cross-section image for clinical medicine. Because the position and the direction of a fetus in a parent are possibly changed at any time, the standard three axial positions of only a few fetuses can be directly positioned through the standard three axial positions of the parent; in many cases, the position of the fetus in the parent is changeable; the standard image of the three axial positions cannot be obtained through the traditional technology; when the standard three axial positions of the parent cannot be given or the standard three axial positions of the fetus cannot be better given, a series of images of various positions can be obtained by rotating and positioning in 360 DEG through a haste sequence, namely a heavy T2 weighted line; and the image closest to the standard fetal position is selected from the series of images and served as the standard to position the brain.
Description
Technical field
The present invention relates to a kind of medical image processing localization method, specifically be based on the method for the NMR (Nuclear Magnetic Resonance)-imaging Scan orientation fetal brain three axle positions of fetus.
Background technology
Up to now, the position due to fetus in parent is different, and the standard three axle positions of fetus and the standard of parent three axle positions are different, utilizes nuclear magnetic resonance, NMR can't accurately orient the standard three axle positions of fetus on the standard three axle positions of parent.Often can not obtain the image of being satisfied with most when therefore, relying on the standard three axle bit images of parent to rebuild fetal brain three axle position.Generally mostly is to rely on doctor's clinical experience to carry out image to process, and owing to there being the factor such as personal error, final fetal brain three axle bit images can not be satisfactory, limited the extensive use of technique.
Analyze its chief reason, the position due to fetus in parent is ever-changing, can't directly obtain the correct posture of fetus from the parent, has finally caused the difficulty when Scan orientation.
Summary of the invention
The object of the present invention is to provide the method for a kind of nuclear magnetic resonance, NMR location fetal brain three axle positions, the method further clear, image of rebuilding exactly fetal brain three axle positions on the scanning basis of existing nuclear magnetic resonance, NMR.
For achieving the above object, the technical solution adopted in the present invention is: the method for a kind of magnetic resonance location fetal brain three axle positions, and its step is as follows:
The first step is the preliminary preview location of axle position, Coronal, sagittal plain with three axle positions, mother uterus, location picture location;
Second step, location mother's uterus Coronal and sagittal plain on the picture of location obtain the preliminary position image of fetus;
The 3rd step, adjust the preliminary position image of the resulting fetus of second step, be adjusted into the fetus three axle bit images of standard;
Be the water imaging by the haste sequence, 360 ° of rotations of heavy T2 Weighted Sum of Line Elements are located, obtain in three axle positions on one of them direction or both direction the brain center line out of shape, by parallel along the center line direction or vertically obtain standard head position on one of them direction, then with the standard position of these other two positions, upper location, basis;
In the 4th step, when obtaining standard fetus three axle position, if occur sagittal plain and axle position during scanning, first locate the standard Coronal of fetus; Sagittal plain and Coronal occur, first locate the standard axle position of fetus; Axle position and Coronal occur, first locate the standard sagittal plain of fetus.
The technique effect that adopts such scheme to reach is: when fetus is carried out the nuclear magnetic resonance scanning imaging, the image of fetus is subjected to the impact of mother's position and fetus position in parent, when being, can directly orient on standard three axles of directly orienting fetus by the standard three axle potential energies of parent the standard three axle positions of fetus head, and just relatively easy when carrying out cerebral localization; But when the standard three axle positions of parent can not provide or can not provide preferably the standard three axle position of fetus, need to obtain the image of a series of each positions by i.e. 360 ° of the heavy T2 Weighted Sum of Line Elements rotation of haste sequence location.Thereby the image of therefrom choosing the fetus position of the most approaching or standard carries out the location of brain as standard.
Further, in the 3rd step, except being the water imaging by the haste sequence, 360 ° of rotations of heavy T2 Weighted Sum of Line Elements are located, can also be by once holding one's breath at multiple directions while location scanning, and the water imaging on each direction is located and can be adjusted separately.Can obtain the image of a plurality of angles equally, obtain standard fetus three axle bit images by processing.
Further, the standard fetus three axle positions in described the 4th step refer to observe fetus head center line, genu of corpus callosum lower edge and splenium lower edge line and bilateral temporal lobe bottom line.The three axle positions of restriction fetus can be for referencial use image join-line.
Further, in described the 4th step, the localization criteria Coronal is to be parallel to brain stem on sagittal plain, on the axle position perpendicular to the brain center line; The standard axle position of location fetus is to be parallel to corpus callosum lower edge and splenium lower edge line on sagittal plain, is parallel to bilateral temporal lobe bottom line on Coronal; The standard sagittal plain of location fetus is to be parallel to the brain center line on the axle position, and is parallel with brain stem and longitudinal fissure pond on Coronal.By further emphasizing the processing mode of each normal bit image, can obtain the standard fetus three axle bit images of standard.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the axonometric drawing than the fetus of standard;
Fig. 2 is the Coronal view than the fetus of standard;
Fig. 3 is the sagittal plain view than the fetus of standard.
Fig. 4 is non-type fetus head positioning image.
Fig. 5 is the schematic diagram of the normal view localization method of Fig. 4.
Fig. 6 is that Fig. 4 rotates the location picture than standard that location scanning obtains.
The specific embodiment
The first step, location mother's uterus Coronal and sagittal plain on the picture of location;
Second step, the preliminary position image of acquisition fetus from the image of the first step; Due to reasons such as position line, fetus position are different, cause the second step positioning image to show that fetus head morphologic localization is different, following two kinds of situations namely might appear:
In the first situation, appearance is during than standard fetus three axle position, can observe head center line, genu of corpus callosum lower edge and the splenium lower edge line of fetus and bilateral temporal lobe bottom line, as shown in Figure 1, if sagittal plain and the axle position of fetus appear in when scanning, the standard Coronal of just first locating fetus namely is parallel to brain stem on sagittal plain, on the axle position perpendicular to the brain center line; As shown in Figure 2, if there is sagittal plain and Coronal, the standard axle position of just first locating fetus namely is being parallel to corpus callosum lower edge and splenium lower edge line on sagittal plain, is parallel to bilateral temporal lobe bottom line on Coronal; As shown in Figure 3, if there is axle position and Coronal, the standard sagittal plain of just first locating fetus namely is parallel to the brain center line on the axle position, parallel with brain stem and longitudinal fissure pond on Coronal.
In the second situation, as shown in Figure 4, when the fetus head image that occurs coming in every shape, as shown in Figure 5, we can locate by the i.e. 360 ° of rotations of heavy T2 Weighted Sum of Line Elements of haste sequence, imaging by 60 °, interval, at least one width standard or a few width can appear than the image of standard, obtain as shown in Figure 6 in three axle positions on one of them direction the brain center line out of shape, by parallel along the center line direction or vertically obtain standard head position on one of them direction, then with the standard position of these other two positions, upper location, basis.Need to prove, whole positioning sequence can obtain by once holding one's breath about 20 seconds sweep time, if satisfied water imaging positioning image do not occur, can carry out trickle adjustment on each scanning direction, but until satisfied positioning image occurs.
The 3rd step, adjust the standard body bit image that obtains fetus, even the fetus involuntary movement occurs in position fixing process, we also can be undertaken from new location by the method;
The 4th step, location fetal brain three axle bit images, the final fetus skull anatomy bit image that obtains satisfaction;
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the premise of not departing from the present invention; can also make some distortion and improvement; these also should be considered as protection scope of the present invention, and these can not affect effect of the invention process and practical applicability.
Claims (4)
1. the method for magnetic resonance location fetal brain three axle positions, its step is as follows:
The first step, three axle positions, mother uterus, location are the preliminary preview location of axle position, Coronal, sagittal plain on location picture;
Second step, location mother's uterus Coronal and sagittal plain on the picture of location obtain the preliminary position image of fetus;
The 3rd step, adjust the preliminary position image of the resulting fetus of second step, be adjusted into the fetus three axle bit images of standard;
Be the water imaging by the haste sequence, 360 ° of rotations of heavy T2 Weighted Sum of Line Elements are located, obtain in three axle positions on one of them direction or both direction the brain center line out of shape, by parallel along the center line direction or vertically obtain standard head position on one of them direction, then with the standard position of these other two positions, upper location, basis;
In the 4th step, when obtaining standard fetus three axle position, if occur sagittal plain and axle position during scanning, first locate the standard Coronal of fetus; Sagittal plain and Coronal occur, first locate the standard axle position of fetus; Axle position and Coronal occur, first locate the standard sagittal plain of fetus.
2. the method for magnetic resonance location fetal brain three axle positions, its step is as follows:
The first step, three axle positions, mother uterus, location are the preliminary preview location of axle position, Coronal, sagittal plain on location picture;
Second step, location mother's uterus Coronal and sagittal plain on the picture of location obtain the preliminary position image of fetus;
The 3rd step, adjust the preliminary position image of the resulting fetus of second step, be adjusted into the fetus three axle bit images of standard;
By once holding one's breath at multiple directions while location scanning, water imaging on each direction is located and can be adjusted separately, obtain in three axle positions on one of them direction or both direction the brain center line out of shape, by parallel along the center line direction or vertically obtain standard head position on one of them direction, then with the standard position of these other two positions, upper location, basis;
In the 4th step, when obtaining standard fetus three axle position, if occur sagittal plain and axle position during scanning, first locate the standard Coronal of fetus; Sagittal plain and Coronal occur, first locate the standard axle position of fetus; Axle position and Coronal occur, first locate the standard sagittal plain of fetus.
3. the method for magnetic resonance as claimed in claim 1 or 2 location fetal brain three axle positions, it is characterized in that, standard fetus three axle positions in described the 4th step are by observing fetus head center line, and genu of corpus callosum lower edge and splenium lower edge line and bilateral temporal lobe bottom line are determined.
4. the method for magnetic resonance as claimed in claim 3 location fetal brain three axle positions, is characterized in that, in described the 4th step, the localization criteria Coronal is to be parallel to brain stem on sagittal plain, on the axle position perpendicular to the brain center line; The standard axle position of location fetus is to be parallel to genu of corpus callosum lower edge and splenium lower edge line on sagittal plain, is parallel to bilateral temporal lobe bottom line on Coronal; The standard sagittal plain of location fetus is to be parallel to the brain center line on the axle position, and is parallel with brain stem and longitudinal fissure pond on Coronal.
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| CN2011100787719A CN102309322B (en) | 2011-03-29 | 2011-03-29 | Method for positioning three axial positions of fetal brain through nuclear magnetic resonance |
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| CN2011100787719A CN102309322B (en) | 2011-03-29 | 2011-03-29 | Method for positioning three axial positions of fetal brain through nuclear magnetic resonance |
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| CN102309322B true CN102309322B (en) | 2013-06-05 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103793905B (en) * | 2012-11-02 | 2019-05-31 | 上海联影医疗科技有限公司 | Determine the method and device in brain image Coronal direction |
| CN109602434A (en) * | 2018-03-09 | 2019-04-12 | 上海慈卫信息技术有限公司 | A kind of fetal in utero cranial image detection method |
| CN112633378B (en) * | 2020-12-24 | 2022-06-28 | 电子科技大学 | Intelligent detection method and system for multi-modal image fetal corpus callosum |
| CN113545767B (en) * | 2021-07-19 | 2023-08-15 | 成都市妇女儿童中心医院 | Fetal craniocerebral scanning three-point plane positioning method |
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| US7276904B2 (en) * | 2005-05-24 | 2007-10-02 | General Electric Company | Method for generating T1-weighted magnetic resonance images and quantitative T1 maps |
| CN101606841A (en) * | 2009-07-10 | 2009-12-23 | 中国人民解放军第三军医大学第一附属医院 | A kind of MRI locating measurement method of human body optic tract shape |
| CN101637386A (en) * | 2009-07-10 | 2010-02-03 | 中国人民解放军第三军医大学第一附属医院 | MRI positioning measurement method of anteroposterior diameter and left-right diameter of ventriculus quartus cerebri of human bodies |
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| US20060058650A1 (en) * | 2002-12-15 | 2006-03-16 | Reuven Sharony | System and method for determinationof fetal movement |
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Patent Citations (3)
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|---|---|---|---|---|
| US7276904B2 (en) * | 2005-05-24 | 2007-10-02 | General Electric Company | Method for generating T1-weighted magnetic resonance images and quantitative T1 maps |
| CN101606841A (en) * | 2009-07-10 | 2009-12-23 | 中国人民解放军第三军医大学第一附属医院 | A kind of MRI locating measurement method of human body optic tract shape |
| CN101637386A (en) * | 2009-07-10 | 2010-02-03 | 中国人民解放军第三军医大学第一附属医院 | MRI positioning measurement method of anteroposterior diameter and left-right diameter of ventriculus quartus cerebri of human bodies |
Non-Patent Citations (4)
| Title |
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| 《Fetal Magnetic Resonance Imaging;Thierry等;《ROENTGENOLOGY》;20081231;第314-335页 * |
| D. Prayer等.Fetal MRI: techniques and protocols.《Pediatr Radiol》.2004, |
| Fetal MRI: techniques and protocols;D. Prayer等;《Pediatr Radiol》;20040728;第685-692页 * |
| Thierry等.《Fetal Magnetic Resonance Imaging.《ROENTGENOLOGY》.2008, |
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