BERLIN (AFX) - A rate cut by the European Central Bank would "definitely be helpful" for the euro-zone economy, Horst Koehler, managing director of the International Monetary Fund, said here. "A rate cut by the ECB would definitely be helpful to the European economy," the IMF chief said. The IMF expects to revise downwards its forecast for euro-area growth this year to 2.5 pct, Koehler added. The ECB has come under pressure recently to ease credit conditions in the euro area to boost flagging growth in the region. The ECB is the only major central bank in the world not to have cut its key interest rates in response to the recent sharp deterioration in global economic conditions and has held its rates steady since October.