Neriya-May Hall is one of the sickle cell disease patients to benefit from the use of ultrasound to administer blood transfusions.
People with sickle cell disease produce unusually-shaped red blood cells.
About 160 patients at St George’s receive a special type of blood transfusion that replaces those cells with donor blood.
Neriya, who is 13 and from Croydon, needs this treatment every four to five weeks and has been receiving care for about five years.
The ultrasound guides the needles for the transfusion into her veins .
The time the procedure takes is halved and Neriya is able to go home just hours later and return to school the next day.