Abstract
Functional images of brain perfusion can be obtained by a steady-state method which exploits the peculiar physical characteristics of the radioactive gas 81mKr.2 This is a very short half-lived isotope (13 sec half-life), which can be continuously produced either in the gaseous or the solution phase from its parent 81Rb (4.6 hours half-life). It emits 190 keV γ rays, an ideal energy for recording with an Anger γ camera. Because of its short half-life, continuous carotid infusion of 81mKr in solution will never eventually result in the equilibrium of this diffusible tracer within the brain; during continuous infusion continuous recording of the activity over the brain will therefore reflect at any time regional arrival of tracer, which is a linear function of regional perfusion. Thus, when used in conjunction with an ordinary Anger γ camera, it provides images of cerebral perfusion in two dimensions.
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References
Clark, J.C., Horlock, P.L., Watson, I.A., 1976. Krypton-81m generators. Radiochem Radioanal Lett 25: 245–254.
Fazio, F., Nardini, M., Fieschi, C., Forli, C., 1977. Assessment of regional blood flow by continuous carotid infusion of krypton-81m. J Nucl Med 18: 962–966.
Phelps, M.E., 1977. Emission computed tomography. Semin Nucl Med 7: 337–365.
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© 1980 Springer-Verlag New York Inc.
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Collice, M. et al. (1980). Regional Cerebral Perfusion Assessed with 81mKr and Emission Computerized Tomography. In: Peerless, S.J., McCormick, C.W. (eds) Microsurgery for Cerebral Ischemia. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-6090-5_13
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DOI: https://doi.org/10.1007/978-1-4612-6090-5_13
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4612-6092-9
Online ISBN: 978-1-4612-6090-5
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