Both laser treated sides showed a significant improvement in MMASI evaluations after two treatments ( 22 % improvement on the QS-Nd : YAG , 17 % QSAL ) and each follow-up visit 2 ( 36 % QS-Nd : YAG ; 44 % QSAL ) , 12 ( 27 % QS-Nd : YAG ; and 24 % QSAL ) , and 24 weeks ( 27 % QS-Nd : YAG ; and 19 % QSAL ) after the last treatment , but no significant difference was seen between study groups at any visit .