** Shares of Curvebeam AI CVB.AX fall as much as 16.4% to A$0.092, their lowest level since August 4
** Stock posts its biggest intraday pct loss since September 4
** Medical equipment manufacturer receives firm commitment to raise A$6.5 million ($4.26 million) via single tranche placement
** Issue price of A$0.09 per share represents a discount of 18.2% to stock's last close
** Funds will be used for sales and marketing of HiRise, a CT scanner for orthopaedic imaging
** About 581,100 shares change hands, 1.6x the 30-day average
** YTD, stock down 30.5%, including current session's move
($1 = 1.5263 Australian dollars)
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))