“…In addition, the mean number of isocenters used increased to 8 (range, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], reflecting the overall improved dose conformality. Over this interval, there were no cases of new facial weakness, trigeminal symptoms occurred in less than 4% of patients, and hearing loss was reduced to 23%.…”