Ultrasound bụ ihe na-agbanwe n'ibu ebili mmiri na ihe onwunwe ọkara. Ọ bụ ụdị ebili mmiri. Ya mere, enwere ike iji ya chọpụta ihe gbasara physiological na pathological nke ahụ mmadụ, ya bụ, ultrasound diagnostic. N'otu oge ahụ, ọ bụkwa ụdị ike. Mgbe ụfọdụ dose nke ultrasound na-agbasa n'ime ihe ndị dị ndụ, site na mmekọrịta ha, ọ nwere ike ime mgbanwe na ọrụ na nhazi nke ihe ndị dị ndụ, ya bụ, mmetụta ultrasonic biological.

Mmetụta nke ultrasound na sel tumadi gụnyere mmetụta thermal, cavitation mmetụta na n'ibu mmetụta. Mmetụta dị ọkụ bụ na mgbe ultrasound na-agbasa na ọkara, esemokwu ahụ na-egbochi vibration nke mkpụrụ ndụ ihe nketa nke ultrasound na-atụgharị akụkụ nke ike n'ime okpomọkụ dị elu nke mpaghara (42-43 ℃). N'ihi na okpomọkụ dị egwu na-egbu egbu nke anụ ahụ nkịtị bụ 45.7 ℃, na uche nke anụ ahụ Liu fụrụ akpụ dị elu karịa nke anụ ahụ nkịtị, metabolism nke mkpụrụ ndụ Liu fụrụ akpụ na-emebi na ọnọdụ okpomọkụ a, na njikọ DNA, RNA na protein na-emetụta, ya mere na-egbu mkpụrụ ndụ cancer na-enweghị emetụta anụ ahụ nkịtị.

Mmetụta cavitation bụ nhazi nke vacuoles na ntule n'okpuru ultrasonic irradiation. Na vibration nke vacuoles na ha na-eme ihe ike mgbawa, n'ibu shiee nrụgide na ọgba aghara na-eme, dapụtara na ọzịza Liu ọbara ọgbụgba, anụ ahụ disintegration na necrosis.

Na mgbakwunye, mgbe cavitation afụ na-agbaji, ọ na-emepụta ozugbo elu okpomọkụ (ihe dị ka 5000 ℃) na elu mgbali (ruo 500 ℃) × 104pa), nke nwere ike thermally dissociate mmiri vepo na-emepụta. OH radical na. H atọm. Mmeghachi omume redox kpatara. OH radical na. H atom nwere ike iduga mmebi polymer, arụghị ọrụ enzyme, peroxidation lipid na igbu mkpụrụ ndụ.