** Shares of Mach7 Technologies rise as much as 7.6% to A$0.355, posting their biggest intraday pct gain since Nov. 28
** Stock hits its highest level since Dec. 11
** Medical imaging systems provider signs new contracts worth A$4.6 mln ($2.88 mln)
** Says four hospitals associated with Adventist Health sign 5-year capital licence agreements to use co's PACS solution
** PACS solution enables replacement of proprietary departmental solutions with an enterprise-ready imaging platform
** Says received new sales order for Veterans Health Administration (VHA) National Teleradiology Programme (NTP)
** VHA NTP is the Veterans Affairs' in-house teleradiology service which has been providing 24/7 service to VHA facilities
** Stock down 58.2% this year, as of last close
($1 = 1.5995 Australian dollars)
(Reporting by Roshan Thomas in Bengaluru)
((Roshan.Thomas@thomsonreuters.com))