NeuroImaging Institute of Winter Park, 2111 Glenwood Drive, Winter Park, FL 32792, USA.
Neuroimaging Clin N Am. 2012 May;22(2):315-41, xi-xii. doi: 10.1016/j.nic.2012.03.001.
Magnetic resonance (MR) imaging at 3 T has proved superior to 1.5 T in the brain for detecting numerous pathologic entities including hemosiderin, tiny metastases, subtle demyelinating plaques, active demyelinating plaques, and some epileptogenic foci, as well as small aneurysms with MR angiography. 3 T is superior to most advanced imaging techniques including diffusion, diffusion tensor imaging, perfusion, spectroscopy and functional MR imaging. The increased signal/noise ratio at 3 T permits higher spatial resolution. Initially spine imaging at 3 T proved more difficult with less successful results. During the past 7 years, technological advances in magnet and surface coil design as well as improved radio frequency transmitters and pulse sequence design in combination with the large body of knowledge accrued by radiologists and physicists during a nine year experience with clinical imaging of the spine with the doubled B0, has resulted in 3 T MRI of the spine achieving a reputation similar to that for brain imaging.
3T 的磁共振（MR）成像已被证明优于 1.5T，可用于检测包括含铁血黄素、微小转移灶、细微脱髓鞘斑块、活跃脱髓鞘斑块和一些致痫灶在内的许多病变，以及通过磁共振血管造影检测小的动脉瘤。3T 优于大多数先进的成像技术，包括弥散、弥散张量成像、灌注、波谱和功能磁共振成像。3T 增加的信号/噪声比可实现更高的空间分辨率。最初，3T 的脊柱成像证明更困难，结果不太成功。在过去的 7 年中，磁体和表面线圈设计方面的技术进步以及改进的射频发射器和脉冲序列设计，结合放射科医生和物理学家在使用双倍 B0 进行脊柱临床成像 9 年期间积累的大量知识，使得脊柱 3T MRI 成像获得了与脑成像类似的声誉。
