WHO:	Wolfgang Richter, Ph.D. , Assistant ProfessorPrinceton UniversityDepartment of ChemistryPrinceton, NJ
TOPIC:	BOLD Imaging and Diffusion Imaging:Two Complementary Methods to Investigate Brain Function
ABSTRACT:	Magnetic resonance imaging methods can be used to measure many different physical quantities. In BOLD imaging, contrast is generated by the apparent transverse relaxation time (T2*) of water, which is thought to be a function of neuronal activity. In Diffusion imaging, contrast is generated through the diffusivity (and, in Diffusion Tensor Imaging, its principal direction) of water. Diffusion imaging can be used to track white matter fiber bundles through the brain and hence to measure connectivity between different regions. Here I will discuss the fundamentals and some limitations of both methods and give examples from our group's research.
WHEN:	12/16/2003 9:30:00 AM
WHERE:	Med Center Upper S-Wing Auditorium

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