In this test, the doctor inserts an ultrasound probe into the throat after the patient is sedated. 被測者首先需要被施用一定的鎮靜劑，然後醫生將一個超聲波探頭通過被測者的喉嚨穿入到食道進行檢測。
In a newer method, an ultrasonic probe enters the cut in the cornea and high-speed vibrations break the lens into microscopic flecks that are then removed by suction. 有一種更先進的方法，把超聲波探頭伸到角膜切口內，高速的振動將晶狀體變成微小的碎片，然後吸出這些碎片。
These often rely on the ultrasonic probe being connected to a manually operated scanning arm with the position being encoded. 這些通常根據由手動操作的掃描桿連接的超聲波探針和解碼器確定的位置來繪製。
