Hayashi Naoto, Watanabe Yasushi, Masumoto Tomohiko, Mori Harushi, Aoki Shigeki, Ohtomo Kuni, Okitsu Osamu, Takahashi Tetsuhiko
Department of Clinical Radiology, University of Tokyo Hospital, 7-3-1 Hongo, Tokyo, Japan.
Magn Reson Med Sci. 2004 Apr 1;3(1):27-38. doi: 10.2463/mrms.3.27.
The evident advantage of high-field MR (magnetic resonance) scanners is their higher signal-to-noise ratio, which results in improved imaging. While no reliable efficacy studies exist that compare the diagnostic capabilities of low- versus high-field scanners, the adoption and acceptance of low-field MRI (magnetic resonance imaging) is subject to biases. On the other hand, the cost savings associated with low-field MRI hardware are obvious. The running costs of a non-superconductive low-field scanner show even greater differences in favor of low-field scanners. Patient anxiety and safety issues also reflect the advantages of low-field scanners. Recent technological developments in the realm of low-field MR scanners will lead to higher image quality, shorter scan times, and refined imaging protocols. Interventional and intraoperative use also supports the installation of low-field MR scanners. Utilization of low-field systems has the potential to enhance overall cost reductions with little or no loss of diagnostic performance.
高场磁共振(MR)扫描仪的明显优势在于其较高的信噪比,这使得成像效果得到改善。虽然目前尚无可靠的疗效研究来比较低场与高场扫描仪的诊断能力,但低场磁共振成像(MRI)的采用和接受存在偏差。另一方面,与低场MRI硬件相关的成本节约是显而易见的。非超导低场扫描仪的运行成本显示出对低场扫描仪更为有利的巨大差异。患者焦虑和安全问题也体现了低场扫描仪的优势。低场MR扫描仪领域的最新技术发展将带来更高的图像质量、更短的扫描时间和完善的成像方案。介入和术中使用也支持安装低场MR扫描仪。使用低场系统有可能在几乎不损失或完全不损失诊断性能的情况下提高总体成本降低水平。