Optical radiation of the plasma flow in an arcjet thruster

SummaryAn accurate catheter-free technique for clinical determination simultaneouslyof glomerular filtration rate and effective renal plasma flow by means of radioisotopes has been developed. The renal function is estimated by the amount of radioisotopes necessary to maintain a constant concentration in the patient’s blood. The infusion pumps are steered by a feedback system, the pumps being automatically turned on when the radiation measured over the patient’s head falls below a certain preset level and turned off when this level is again readied. 131I-iodopyracet was used for the estimation of effective renal plasma flow and125I-iothalamate estimation of the glomerular filtration rate. These clearances were compared to the conventional bladder clearances and good correlation was found between these two clearance methods (correlation coefficients 0.97 and.90 respectively). The advantages and disadvantages of this new clearance technique are discussed.

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Interaction of intense optical radiation with free electrons (nonrelativistic case)

Uspekhi Fizicheskih Nauk ◽

10.3367/ufnr.0107.197208b.0559 ◽

1972 ◽

Vol 107 (8) ◽

pp. 559 ◽

Cited By ~ 88

Author(s):

F.V. Bunkin ◽

A.E. Kazakov ◽

M.V. Fedorov

Keyword(s):

Optical Radiation ◽

Free Electrons ◽

Nonrelativistic Case

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RENAL FUNCTION AND KIDNEY SIZE FOLLOWING HYPOPHYSECTOMY IN MAN

Acta Endocrinologica ◽

10.1530/acta.0.0480348 ◽

1965 ◽

Vol 48 (3) ◽

pp. 348-354 ◽

Cited By ~ 33

Author(s):

Thomas Falkheden ◽

Ingmar Wickbom

Keyword(s):

Renal Function ◽

Diabetic Retinopathy ◽

Glomerular Filtration Rate ◽

Plasma Flow ◽

Mammary Carcinoma ◽

Filtration Rate ◽

Renal Plasma Flow ◽

Kidney Weight ◽

Kidney Size ◽

Before And After

ABSTRACT Measurements of glomerular filtration rate (GFR) and renal plasma flow (RPF) were performed in close connection with roentgenographic estimation of kidney size, before and after hypophysectomy, in 10 patients (four cases of metastatic mammary carcinoma, five cases of diabetic retinopathy and one case of acromegaly). Hypophysectomy was regularly followed by a decrease in GFR and RPF. In most cases, a reduction in the roentgenographic kidney size was also observed. However, the changes in the roentgenographic kidney size and calculated kidney weight after hypophysectomy were smaller and occurred at a slower rate than the alterations in GFR and RPF. The results favour the view that, primarily, the decrease in GFR and RPF following hypophysectomy is essentially functional rather than due to a reduced kidney mass.

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