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檢視所有 Wikipediahttps://en.wikipedia.org/wiki/Magnetic_resonance_imagingMRI requires a magnetic field that is both strong and uniform to a few parts per million across the scan volume. The field strength of the magnet is measured in teslas – and while the majority of systems operate at 1.5 T, commercial systems are available between 0.2 and 7 T. Whole-body MRI systems for … 查看更多內容
Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, … 查看更多內容
MRI for imaging anatomical structures or blood flow do not require contrast agents since the varying properties of the tissues or blood provide … 查看更多內容
MRI is, in general, a safe technique, although injuries may occur as a result of failed safety procedures or human error. Contraindications to … 查看更多內容
MRI has a wide range of applications in medical diagnosis and more than 25,000 scanners are estimated to be in use worldwide. MRI affects diagnosis and treatment in … 查看更多內容
Magnetic resonance spectroscopy
Magnetic resonance spectroscopy (MRS) is used to measure the levels of different metabolites in body tissues, which can be achieved … 查看更多內容An MRI artifact is a visual artifact, that is, an anomaly during visual representation. Many different artifacts can occur during magnetic resonance imaging (MRI), some affecting the diagnostic quality, while others may be confused with pathology. Artifacts can be … 查看更多內容
CC-BY-SA 授權下的維基百科文字磁共振成像 - 维基百科，自由的百科全书
https://zh.wikipedia.org/wiki/磁共振成像磁共振成像（Magnetic resonance imaging，MRI）是利用核磁共振（nuclear magnetic resonance，NMR）原理，依据所释放的能量在物质内部不同结构环境中不同的衰减，通过外加梯度磁场检测所发射出的电磁波，即可得知构成这一物体原子核的位置和种类，据此可以绘制成物体内部的结构图像。
将这种技术用于人体内部结构的成像，就产生出一种革命性的医学诊断工具。快速变化的梯度磁 …Wikipedia · CC-BY-SA 授權下的文字醫學超音波檢查 - 維基百科，自由的百科全書
功能性磁共振成像 - 维基百科，自由的百科全书
https://zh.wikipedia.org/wiki/功能性磁共振成像- 自從1890年代開始，人們就知道血流與血氧的改變（兩者合稱為血液動力學）與神經元的活化有著密不可分的關係。神經細胞活化時會消耗氧氣，而氧氣要藉由神經細胞附近的微血管以紅血球中的血紅素運送過來。因此，當腦神經活化時，其附近的血流會增加來補充消耗掉的氧氣。從神經活化到引發血液動力學的改變，通常會有1-5秒的延遲，然後在4-5秒達到的高峰，再回到基線（通 …
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- https://simple.wikipedia.org/wiki/Magnetic_resonance_imaging
Magnetic resonance imaging. A picture of a MRI scan of the human head. Magnetic resonance imaging ( MRI ), or nuclear magnetic resonance imaging ( NMRI ), are techniques that doctors …
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- https://en.wikipedia.org/wiki/History_of_magnetic_resonance_imaging
They also performed the first MRI body scan of a human being on July 3, 1977, studies they published in 1977. In 1979, Richard S. Likes filed a patent on k-space U.S. Patent 4,307,343. …
- https://en.wikipedia.org/wiki/Physics_of_magnetic_resonance_imaging
Modern 3 tesla clinical MRI scanner. The physics of magnetic resonance imaging ( MRI) concerns fundamental physical considerations of MRI techniques and technological aspects of …
- https://en.wikipedia.org/wiki/Magnetic_resonance_imaging_of_the_brain
B030ZZZ. ICD-9-CM. 88.91. OPS-301 code. 3-800, 3-820. Magnetic resonance imaging of the brain uses magnetic resonance imaging (MRI) to produce high quality two-dimensional or three …
- https://nl.wikipedia.org/wiki/Magnetic_resonance_imaging
Magnetic resonance imaging. Magnetic resonance imaging ( MRI ), in het Nederlands soms aangeduid met kernspintomografie ( KST ), [1] is een medische beeldvormingstechniek die …
- https://en.wikipedia.org/wiki/Functional_magnetic_resonance_imaging
Functional magnetic resonance imaging or functional MRI ( fMRI) measures brain activity by detecting changes associated with blood flow. [1] [2] This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. …
