BUZZ-Australia's Optiscan Imaging gains on signing new cross-border research deal

IPATH GS CRUDE OIL TOTAL RET INDEX

IPATH GS CRUDE OIL TOTAL RET INDEX

OIL

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** Shares of Australia's Optiscan Imaging OIL.AX rise as much as 8.9% to A$0.153

** Stock erases most losses from Tuesday's session

** Company signs a research agreement with US-based Mayo Clinic to test its breast cancer imaging platforms

** Study is designed to potentially generate clinical evidence for planned FDA 510(k) submission, company says

** Stock up 50% YTD, including current session's moves