Significance of xenon-133 clearance rate from canine and human joints
نویسندگان
چکیده
منابع مشابه
Flow Activation Studies Using Xenon-133 Clearance
Background and Purpose: Three mainstream strategies exist to detect the responses of regional cerebral blood flow to functional activation. We tested the significance of changes in raw regional cerebral blood flow data, regional cerebral blood flow data normalized by division by global cerebral blood flow (dependent model of the regional-to-global cerebral blood flow relation), and regional cer...
متن کاملThe Measurement of Local Blood Flow in the Cerebral Cortex from the Clearance of Xenon-133.
Recently Lassen and Ingvar (1961) devised a technique for measuring local blood flow through the cerebral cortex. Their method, derived from the Fick principle, entailed the injection of the radioactive gas krypton85 into the carotid artery and the subsequent measurement of the rate of clearance from the brain of the beta emissions of the isotope. As these have an average range in tissue of 0-7...
متن کاملEstimation of error limits for cerebral blood flow values obtained from xenon-133 clearance curves.
I provide the theoretical basis for an error calculus for measurements of cerebral blood flow using a freely diffusible tracer substance such as xenon-133. The use of the error calculus is exemplified by a study of the effect on the error margins in measurements of gray matter blood flow from flow level, relative weight of the gray matter compartment, and use of the earliest parts of the cleara...
متن کاملComparison of microsphere and Xenon-133 clearance method in measuring skeletal muscle and cerebral blood flow.
In this study, we compared the Xenon-133 (Xe) clearance method with the microsphere method in measurement of skeletal muscle and cerebral blood flow (CBF). Over a wide range of flows (1-47 ml/min x 100 g), we compared these two methods with direct measurements of venous outflow in the gracilis muscle. Regression equations relating the Xe (stochastic method) and microsphere measurements of flow ...
متن کاملBlood flow in irradiated mouse sarcoma as determined by the clearance of xenon-133.
into KHT sarcomas in C3H mice in order to study tumor blood flow. The rate of blood flow in ml/100 g/min was calculated from the clearance half-time and the partition coefficient. The mean rate of blood flow in the tumors of unanesthetized control mice was 21.2 ±0.8 ml/100 g/min, which was significantly faster than the blood flow in the tumors of pentobarbital-anesthetized control mice. ' 33Xe...
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ژورنال
عنوان ژورنال: Arthritis & Rheumatism
سال: 1972
ISSN: 0004-3591,1529-0131
DOI: 10.1002/art.1780150407