Probes and Biopsy 13-5 
<1>  Transducer head 
It converts the electrical signal into ultrasound signal, 
making the sound beams focus in the given direction; 
meanwhile, it will receive the ultrasound signal and then 
convert the received signal into electrical signal.   
The lens on the surface is the acoustic lens. Apply 
ultrasound gel on the acoustic lens. 
<2> 
bracket fix tabs and 
grooves 
Used to mount the needle-guided bracket. 
<3>  Transducer cable 
Used to transmit electrical signals between the transducer 
body and connector. 
<4>  Transducer connector 
Used to connect the transducer to the ultrasonic diagnostic 
system. 
<5> 
Lock handle 
This locks the connector to the ultrasonic diagnostic 
system. 
The probes’ structure marked <2> in the figure above may vary with the matched needle-
guided brackets. 
13.1.2  Orientation of the Ultrasound Image and the 
Transducer Head 
The orientation of the ultrasound image and the transducer are shown below. The “MARK” 
side of the ultrasound image on the monitor corresponds to the mark side of the transducer. 
Check the orientation before the examination (take linear probe as an example).