HONG KONG, June 14 -- The University of Hong Kong issued the following news release: * * * HKU Engineering pioneers nanorobot navigation with infrared "GPS" for image-guided therapy * Nanorobots have shown great promise in precision medicine over the past few decades. Yet one key challenge remains: how to track and guide these tiny devices in real time as they move through complex physiological environments. Existing imaging approaches often require long exposure times to detect ionising radiation or suffer from blurred images due to strong more PR