Measurement of Circulation Times with NaI 131
نویسندگان
چکیده
منابع مشابه
Measurement of Circulation Times with Nal
Circulation time from an arm vein to the femoral artery as determined with I averaged 11.2 seconds in normal male adults. In the presence of heart failure the time of initial arrival was prolonged, and the slope of ensuing rise flattened. Decholin time, determined simultaneously, averaged 25 per cent longer than I time in both normal subjects and patients with congestive failure. Theoretical co...
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Introduction In order to discharge the patients receiving treatment with large radiation doses of 131I for thyroid cancer, it is necessary to measure and evaluate the external dose rates of these patients. The aim of the study was to assess a new method of external dose rate measurement, and to analyze the obtained results as a function of time. Materials and Methods In this study, a telescopic...
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Radiation detectors, like doped NaI, are commonly used in the field for the determination of gamma dose-rates. In most cases, and even though these systems generally allow one to record the full gamma spectrum between 0 to around 3 MeV, this dose-rate is computed from the count rates recorded in a limited number of "windows" (Aitken, 1985). With this technique, only a small part of the spectrum...
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Since the introduction of surgical treatment for congenital heart disease, which was mainly of academic interest before, it has become important to diagnose as far as is possible the anatomical and dynamic abnormalities present in each case. This need has placed a premium upon any method, more especially if simple and safe, that may help to elucidate the problem. The purpose of this communicati...
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• It has often been considered that pie thy smographic foot or hand, and calf or forearm, measurements are representative of skin or of muscle blood flow, respectively, because of the preponderant amounts of each tissue in these areas. However, Cooper et al. have demonstrated that 60% of the total forearm flow may be in the skin under certain conditions. It is obvious, therefore, that increases...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1956
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.4.4.456