Enwere ọtụtụ ụzọ a na-ejikarị eme ihe maka nhicha iko, nke nwere ike ichikota dị ka ihe mgbaze, ikpo ọkụ ọkụ na radiation radiation, ultrasonic ihicha, mkpochapụ ihicha, wdg n'etiti ha, ihe mgbaze na ikpocha ọkụ bụ ihe a na-ahụkarị. Nchacha ihe mgbaze bụ usoro a na-ahụkarị, nke na-eji mmiri...
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