non-invasive       
adjective  medical specialized uk/ˌnɒn.ɪnˈveɪ.sɪv/ us/ˌnɑːn.ɪnˈveɪ.sɪv/
 非入侵性的
relating to any medical test or treatment that does not cut the skin or enter any of the body spaces
  a non-invasive test 非入侵性测试 
 a non-invasive procedure 非入侵性程序