Spectrum subtraction technique for minimizing extracranial influence on cerebral blood flow measurements by 133xenon inhalation.
نویسندگان
چکیده
منابع مشابه
Spectrum subtraction technique for minimizing extracranial influence on cerebral blood flow measurements by 133xenon inhalation.
Estimates of regional cerebral blood flow (rCBF) by the 133Xe inhalation method are influenced by isotope contamination from slow clearing extracerebral tissues. Subtraction of x-ray (31 kev) from gamma-ray counts (81 kev) has been suggested as a means of yielding clearance curves that are relatively free of such contamination. In the present study, rCBF measurements based on the total 133Xe sp...
متن کاملSpectrum Subtraction Technique for Minimizing Extracranial Influence on Cerebral Blood Flow Measurements by Xenon Inhalation
Estimates of regional cerebral blood flow (rCBF) by the Xe inhalation method are influenced by isotope contamination from slow clearing extracerebral tissues. Subtraction of x-ray (31 kev) from gamma-ray counts (81 kev) has been suggested as a means of yielding clearance curves that are relatively free of such contamination. In the present study, rCBF measurements based on the total Xe spectrum...
متن کاملImproved method for noninvasive measurement of regional cerebral blood flow by 133Xenon inhalation. Part II: measurements in health and disease.
In Ross Russell RW (ed): Cerebral Arterial Disease. London, Churchill Livingstone, 1976, pp 85-106 39. Obrist WD, Silver D, Wilkinson WF et al: The m X e inhalation method: Assessment of rCBF in carotid endarterectomy. In Langfitt TW, McHenry LC Jr, Reivich M, Wollman H (eds) Cerebral Circulation and Metabolism. New York, Springer-Verlag, 1975, pp 239-246 40. Wada JA, Clarke R, Hamm A: Cerebral...
متن کاملRegional cerebral blood flow in stroke by 133Xenon inhalation and emission tomography.
A rapidly rotating single-photon emission tomograph was used to study regional cerebral blood flow by 133Xenon inhalation. Using a rotation speed of 180 degrees/5 sec a tomographic picture of the average Xenon concentration in 3 slices is obtained. By taking a sequence of 4 one-minute tomograms during and after a one-minute 133Xenon inhalation period a flow-dependent variation in local isotope ...
متن کاملCerebral Blood Flow Assessment by Digital Subtraction Angiography
Cerebral vascular disease is responsible for nearly 800 000 hospital admissions annually with a total healthcare cost of $34 billion. Neuro-interventional surgery is at the forefront of fast-response assessment and intervention to assess patients’ health using digital subtraction angiography (DSA). Unfortunately, cerebral blood flow cannot be reliably measured with DSA during intervention. In t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Stroke
سال: 1977
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.8.3.380