** Mach7 Technologies M7T.AX falls 6.9% to A$0.405, lowest since July 22

** Stock set for worst day since March 25

** Medical imaging systems provider reports Q4 annual recurring revenue of A$23.5 mln ($15.3 mln), 10% below Jefferies estimates

** About 380,169 shares change hands, 1.3x the 30-day avg

** M7T gains 8.8% this year, as of last close

($1 = A$1.5342)

(Reporting by Jasmeen Ara Shaikh in Bengaluru)

((JasmeenAraIslam.Shaikh@thomsonreuters.com;))