I am interested in finding if there are researchers or clinical practitioners in California that are using SPECT scans to measure blood flow in the brain, as part of their diagnosis for CFS. SPECT (Single-photon Emission Computed Tomography) scans measure blood flow. This is in contrast to MRI which only shows brain structure. Studies have shown that up to 90% of CFS sufferers have low levels of blood flow to the brain. If there are researchers actively investigating this at Stanford or UCSF I would very much like to know their names and contact info.