| 摘要 |
The invention relates to a measurement device for use in treatment of a patient's bone, containing a specific location, which is of the kind reflecting ultrasonic radiation and which is to be prevented from being contacted during the treatment. The measurement device comprises two ultrasound probes that are to be located at opposite sides of the bone. Both probes are capable of receiving the reflected ultrasonic radiation, at least one of the probes being a transceiver. The two probes are operable to communicate with each other to generate measured data indicative of a relative position of said location in the bone with respect to the probes. The invention also relates to a measurement device for use in dental treatment of a patient's alveolar bone that contains a nerve canal. The measurement device comprises a plurality of transceivers arranged in two arrays supported with adjustable distance between them so as to be placed at opposite sides of the bone, respectively, inside the patient's mouth. The transceiver arrays are selectively operated, such that one array transmits ultrasonic radiation towards the other array through the bone, and receives reflections of said ultrasonic radiation. This enables three-dimensional imaging of a region between the transceiver arrays and enables the location of the nerve canal.
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