A device for examining a subject capable of marking a boundary range for the insertion/retraction of a member

摘要

An ultrasound diagnostic device (1) comprises an ultrasound endoscope (2), an ultrasound diagnostic signal processing device (11) and a monitor (12) and is arranged to obtain an ultrasound diagnostic image by performing transmission/reception of ultrasound signals with respect to a detection subject within a body cavity. The ultrasound endoscope (2) comprises an insertion section (21) inserted into a body cavity, an operating section (22) and a connecting cord (23). A biopsy needle insertion/retraction section (3) is employed for forward or backward insertion/retraction of a biopsy needle (4). The subject may be pierced by the needle tip of a biopsy needle (4) that protrudes from a biopsy needle protrusion port (26) at the tip (1) of an insertion section (21) of the ultrasound endoscope (2) which has been inserted. The monitor (12) displays the biopsy needle (4) in the ultrasound diagnostic image. The ultrasound diagnostic signal processing device (11) is constituted as superimposition means that superimposes a boundary of the advance of the piercing direction of the biopsy needle (4) on the display of the ultrasound diagnostic image by the monitor (12).