No doubt the siemens medical solutions people would be interested in talking with you further. The KDD 2006 training and results data have now been released, so its not really a great demonstration.

I had the same idea but I tried approaching them and couldn't get them to try and test my algorithm. Cold calls in that industry are very difficult...

I don't want them to take my word for it, just supply me with more test data and I could send them my results.

Try the specific kdd people there as listed on this paper: http://portal.acm.org/citation.cfm?id=1233321.1233326

I'm sure an opportunity to prove your algorithm will pop up. Its the sort of field where you can fool yourself sometimes by not being careful enough with training and testing data, so random people off the internet generally don't seem worth the trouble to an established researcher.