http://www.epda.eu.com/medInfo/medIn...alDevices.shtm

to confirm my dx. Was essential for insurance companies to pay out as they would not accept clinical dx alone, (due to my age).

Don't understand the difference between Pet and Dat scans, but same principle, isotope injected, radioactive substance clings to dopamine neurons, analysis of "clinging" shows status of dopamine neurons and hence enables PD dx.

Neil.