For the third year in a row, Cleveland Clinic doctors and consultants have picked the medical innovations they think will be most influential next year. The Top 10 Medical Innovations for 2009 were announced during the Clinic's sixth annual Medical Innovation Summit. Number one for 2009 was the use of circulating tumor cell technology, which measures tumor cells that circulate in the blood. Results can help doctors understand how a cancer is progressing and how to adjust treatments in patients who have repeat cancer.