Ramnath R Richard
Neuroskeletal Imaging, Melbourne, FL 32901, USA.
Magn Reson Imaging Clin N Am. 2006 Feb;14(1):27-40. doi: 10.1016/j.mric.2006.01.001.
As 3T MR imaging systems become more wide-spread in the clinical realm, a full understanding of the opportunities for image improvement and the limitations in the applications of the signal gain is needed. It is clear that even with current coil technology, much of the gain in signal can be harnessed effectively; however, continued coil development is necessary to realize the full potential of 3T, especially with the wonderful synergy that can be achieved with the use of parallel imaging and multiple-channel phased-array extremity coils. Furthermore, despite the theoretic imaging challenges at higher field strengths (eg, susceptibility, chemical shift, SAR, pulsation, T1 time prolongation, and T2 time shortening), the techniques and methods that were discussed above can eliminate any obstacles to clinical imaging. This creates excellent opportunities to improve image quality, spatial resolution, and diagnostic accuracy in the musculo-skeletal system. From the author's experience, the superb image quality has impressed referring orthopedic surgeons, and the reduction in scan time has resulted in greater patient satisfaction and reduced anxiety.
随着3T磁共振成像系统在临床领域的应用越来越广泛，需要全面了解图像改善的机会以及信号增益应用中的局限性。很明显，即使采用当前的线圈技术，也可以有效地利用大部分信号增益；然而，持续的线圈开发对于实现3T的全部潜力是必要的，特别是在使用并行成像和多通道相控阵肢体线圈可实现的出色协同作用方面。此外，尽管在更高场强下存在理论成像挑战（例如，磁化率、化学位移、比吸收率、脉动、T1时间延长和T2时间缩短），但上述技术和方法可以消除临床成像的任何障碍。这为改善肌肉骨骼系统的图像质量、空间分辨率和诊断准确性创造了绝佳机会。根据作者的经验，出色的图像质量给转诊的骨科医生留下了深刻印象，扫描时间的缩短提高了患者满意度并减轻了焦虑。
