Provided are an ultrasound imaging apparatus and a method of controlling the same. The ultrasound imaging apparatus includes: a probe including a transducer array; an ultrasound signal receiver including a first time gain compensation (TGC) channel and a second TGC channel that each perform TGC on an ultrasound signal received from the probe; a communicator configured to communicate with a first client apparatus; and one or more processors configured to change a second TGC parameter of the second TGC channel, based on a control signal received from the first client apparatus, generate a second ultrasound image based on a second ultrasound signal produced via the second TGC channel, and transmit the second ultrasound image to the first client apparatus via the communicator.