Nta ntawm ultrasound

  1. Thaum ultrasonic tsis yog propagated, lub directionality muaj zog, thiab lub zog yog yooj yim concentrated.
  2. Ultrasonic nthwv dej tuaj yeem nthuav tawm hauv ntau yam xov xwm, thiab tuaj yeem kis tau deb txaus.
  3. Kev sib cuam tshuam ntawm ultrasound thiab suab nruab nrab yog nruab nrab, thiab nws yog ib qho yooj yim los nqa cov ntaub ntawv hais txog lub xeev ntawm lub suab nruab nrab (kev kuaj mob lossis cuam tshuam rau lub suab nruab nrab. (Kev kho)

 

Ultrasound yog ib hom kev hloov pauv, uas tuaj yeem siv los ua cov khoom thauj lossis nruab nrab rau kev tshawb nrhiav thiab thauj cov ntaub ntawv (xws li B-ultrasound thiab lwm yam); ultrasound kuj yog ib daim ntawv ntawm lub zog. Thaum nws qhov kev siv ntau tshaj ib qho nqi, nws tuaj yeem dhau los ntawm Kev sib cuam tshuam ntawm qhov nruab nrab uas xa cov ultrasonic tsis cuam tshuam thiab hloov lub xeev, xwm thiab cov qauv ntawm qhov kawg (siv raws li kev kho).