A new tomographic technique for absolute measurements of white and gray matter blood flow
Författare
Summary, in English
Method. The new tomographic method (modified Xe-SPECT) is based on an extension of the period of 133Xe inhalation from one to eight minutes followed by 22 instead of four minutes of breathing of ambient air. This gives a markedly enhanced signal from the white matter and better basis for correct quantification of the blood flow. The arrival and clearance of the tracer are recorded by a three head gamma camera system that provides flow maps with a spatial resolution of about one cm.
Results The new method has been evaluated in 33 healthy younger and older (around 70 years) subjects as well as in a group of elderly patients with organic dementia. Our preliminary findings indicate that new and clinically valuable information is obtained by the improved Xe-SPECT method.
Publiceringsår
2004
Språk
Engelska
Publikation/Tidskrift/Serie
Proceedings of the 8th Nordic Meeting in Neuropsychology, Turku, Finland, August 26–29, 2004, 85
Dokumenttyp
Konferensbidrag
Ämne
- Psychiatry
- Geriatrics
- Radiology, Nuclear Medicine and Medical Imaging
Conference name
The 8th Nordic Meeting in Neuropsychology
Conference date
2004-08-26 - 2004-08-29
Conference place
Turku, Finland
Status
Published