Simon Duckett and I have organised a chemistry/YNiC hyperpolarisation team meeting this morning where we are discussing MRI/NMR theory. As the numbers attending are more than can be housed in my office we are moving the seminar into the open plan area of YNiC. All are welcome and the talk will start at 9.30 A presentation on the mathematical background to NMR and MRI will be presented. The talk will be mainly on Density matrices, Product operators and the theory behind double quantum states selection in polarised molecules. Sorry for the late notice Gary -- Gary Green York Neuroimaging Centre The Biocentre York Science Park Innovation Way Heslington York YO10 5DG http://www.ynic.york.ac.uk tel. 01904 435349 fax 01904 435356 mobile 07986 778954