** Shares of Healius HLS.AX rise as much as 6.5% to
A$1.715, posting their biggest intraday percentage gain since
Aug. 21
** Healthcare firm signs binding agreement to sell its
diagnostic imaging arm, Lumus Imaging, to Affinity Equity
Partners
** Says deal implies an enterprise value of A$965 mln
($657.65 mln)
** Says proceeds to be used to reduce debt, among others
** Stock almost flat this year, as of 0109 GMT
($1 = 1.4674 Australian dollars)
(Reporting by Rajasik Mukherjee in Bengaluru)
((Rajasik.Mukherjee@thomsonreuters.com;))