Group Photo (IMAGE) The University of Hong Kong Caption HKUMed research team finds that over 30% of ischaemic stroke patients who received intra-arterial mechanical thrombectomy had a good clinical outcome even after six hours of the onset of symptoms. (From left) Professor Gilberto Leung Ka-kit, Dr Chan Koon-ho, Dr Kevin Cheng King-fai and Dr Edward Chu Yin-lun. Credit The University of Hong Kong Usage Restrictions n/a License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.