“…Several studies focused on microstructural tissue changes in white matter structures after radiotherapy. The most prominent effects are decreasing FA [ 24 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 ], increasing MD [ 24 , 68 , 70 , 72 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 ], and increasing RD [ 71 , 76 , 77 , 78 , 79 , 80 , 82 , 85 , 86 , 87 ]. AD was both measured as increasing [ 77 , 78 , 80 , 82 ] and decreasing [ 71 , 83 , 85 , 86 , 87 , 88 , 89 ] as a response to radiation.…”