Evaluation of the potential of diffusion tensor imaging biomarkers in prediction of white matter changes after brain radiation therapy: A systematic review.

There was an increase in FA at this phase as well as at the early delay phase;[ 30 ] however, in two studies, the FA trend remained decreased with time and dose.[ 28 , 31 ] In three studies,[ 26 , 28 , 31 ] the RD parameter showed an increasing trend, while one study[ 30 ] showed a decreasing trend.

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