Probes and Biopsy 13-39 
13.3  Middle Line 
Middle Line helps to locate and observe the focus point of lithotripsy wave during lithotripsy 
treatment. By means of providing information for the lithotripsy machine as well as a tool for 
watching the procedure of lithotripsy in real-time, you can adjust the intension and frequency of the 
lithotripsy wave through lithotripsy machine. 
  To enter the mode: tap [Middle Line] in the biopsy menu   
 
  The middle line is a vertical dotted line located in the middle of the screen, the position 
and direction of which cannot be changed. 
  There is a mark icon of ―×‖ located on the middle line which can be moved up and down 
along the line by rolling the track ball. 
  To use the Middle Line function of the ultrasound system. 
  The depth of the mark is displayed in the image parameter area of the screen.