Abstract: A system and method are provided for annotating data displayed on a display device. The system includes a processing unit for processing data and providing the processed data to the display device for displaying a portion thereof, and further generating a cursor for display by the display device and accessing a data set including a plurality of labels. The system further includes a user input device for transmitting a series of user request signals to the processing unit upon manipulation of the user input device with a user's hand, and a switch in proximity to the user input device for transmitting mode selection signals to the processing unit for selecting one of a cursor movement mode and an annotation mode. The switch is located sufficiently proximate the user input device for being selectively switched by the user's hand during manipulation of the user input device. When the cursor movement mode is selected, the series of user request signals control movement of the cursor on the display.

Abstract: An ultrasound imaging system lateral gain control circuit operates in conjunction with an ultrasound imaging system for generating an ultrasound image of an ultrasound analysis object using an ultrasound sensing circuit for sensing an ultrasound signal returning from an ultrasound analysis object to an ultrasound transducer. The ultrasound image is defined by a first region and a second region. The first region and second region together form the complete ultrasound image. The first region associates with a region proximate to the ultrasound transducer, while the second region associates with a region distal from the ultrasound transducer. The lateral gain control circuit controls the two-dimensional ultrasound image brightness between the two regions by controlling the ultrasound signal amplification by separately controlling the first region signal amplification and the second region signal amplification.