Magnetic resonance imaging protocols for examination of the neurocranium at 3 T

被引:33
|
作者
Schwindt, W [1 ]
Kugel, H [1 ]
Bachmann, R [1 ]
Kloska, S [1 ]
Allkemper, T [1 ]
Maintz, D [1 ]
Pfleiderer, B [1 ]
Tombach, B [1 ]
Heindel, W [1 ]
机构
[1] Univ Klinikum Munster, Inst Klin Radiol, D-48129 Munster, Germany
关键词
magnetic resonance; high field strength imaging; high resolution; comparative studies; contrast agents;
D O I
10.1007/s00330-003-1984-7
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
The increasing availability of high-field (3 T) MR scanners requires adapting and optimizing clinical imaging protocols to exploit the theoretically higher signal-to-noise ratio (SNR) of the higher field strength. Our aim was to establish reliable and stable protocols meeting the clinical demands for imaging the neurocranium at 3 T. Two hundred patients with a broad range of indications received an examination of the neurocranium with an appropriate assortment of imaging techniques at 3 T. Several imaging parameters were optimized. Keeping scan times comparable to those at 1.5 T we increased spatial resolution. Contrast-enhanced and non-enhanced T1-weighted imaging was best applying gradient-echo and inversion recovery (rather than spin-echo) techniques, respectively. For fluid-attenuated inversion recovery (FLAIR) imaging a TE of 120 ms yielded optimum contrast-to-noise ratio (CNR). High-resolution isotropic 3D data sets were acquired within reasonable scan times. Some artifacts were pronounced, but generally imaging profited from the higher SNR. We present a set of optimized examination protocols for neuroimaging at 3 T, which proved to be reliable in a clinical routine setting.
引用
收藏
页码:2170 / 2179
页数:10
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