Abstract
With a small cadmium telluride detector fixed to the skin surface, the kidney function [glomerular filtration rate (GFR)] can be determined in man from the disappearance rate of i.v. injected DTPA-(Sn)- 99mTc monitored in a three hour period and just one blood sample. The small (2–3 mm 3) p-type CdTe-crystals (developed by C.R.N., Strasboug, Frnace) grown by the THM-method, without external chemical compensation have a resistivity of 10 4–10 6 ω· cm. The combination of CdTe detectors and portable recording media like tape-cassette recorders or semiconductor memory systems (CMOS), constitutes the biotelemetry equipment, which can be used in the clinical routine or in studies of the kidney function in ambulant patients during different physiological conditions. The method and some studies will be presented.
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