It can be performed by most M. R. I. machines and does not take longer or cost more than a standard m.
大部分的核磁共振成像器都可以进行弥散张量成像，而且不会比常规扫描花费额外的时间和金钱。
2
The special M. R. I. technique, known as diffusion tensor imaging, is also being studied to help improve the diagnosis of concussions.
这种特殊形式的核磁共振成像技术被称为弥散张量成像，对这种技术的也用来提高诊断脑震荡的精确度。
3
But then came the latest study on the issue, this one from researchers at the University of California at San Francisco, using a more sensitive type of M. r.