Ленинградский Научно-Исследовательский Институт Радиационной Гигиены Министерства Здравохранения Рсфср
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ленинградский Научно-Исследовательский Институт Радиационной Гигиены Министерства Здравохранения РсфсрfiledCriticalЛенинградский Научно-Исследовательский Институт Радиационной Гигиены Министерства Здравохранения Рсфср
Priority to SU1997688ApriorityCriticalpatent/SU512672A1/en
Application grantedgrantedCritical
Publication of SU512672A1publicationCriticalpatent/SU512672A1/en
Эталонировку результатов измерений п вод т с помощью парафинового фантома ш внутрь которого помещают целлулоидные щарики с раствором 3 известной активности . По коэффициенту св зи А К, А зт активность Э в шарика мк кюри; скорость счета при измерении фан тома, имп/м; 3 рассчитьшают количество в щитовидной железе пациента. Так как щитовидна железа не разли- чает изотопы йода, то депонированные в железе доли от введенных и ны быть одинаковыми. Поэтому по результатам измерени содержани радиоизотопо в железе, полученным в течение первых двух-трех дней обследовани , вычисл ют коэффициент а , св зывающий долю накоп лени 5 (в % от введенной метки) ) со счетностью, полученной при измерении тонким кристаллом. После ра пада результаты измерени долгожи вущего J пересчитывают в доли эт введенной активности умножением скорости счета, полученной при измерении тонким кристаллом, на коэффициент а, который рассчитывают следующим образом. 3(t)expC0.695(-g;o-b -)1 N - Ф И5US где: У - дол введенной метки, % N. - скорость счета дл тонкого кристалла , имп/мин, фон дл тонкого кристалла, имп/мин, t - врем измерени , мин. Формула изобретени Способ определени функционального состо ни щитовидной железы путем введени в организм изотопов У и радиометрии их излучени из щитовидной железы сцинтилл ционным счетчиком, отличающийс тем, что, с целью определени сравнительной локализованной функциональной активности в разных фазах йодного обмена , одновременно ввод т также низкоэнергетический изотоп :3 и провод т радиометрию раздельно дл каждой доли щитовидной железы.The standardization of the measurement results is carried out using a paraffin phantom, and celluloid pellets with a solution of 3 known activities are placed inside it. By the coupling coefficient A K, A zt, the activity of E is in a ball of a curie; counting rate when measuring fan volume, imp / m; 3 calculate the amount in the patient's thyroid gland. Since the thyroid gland does not distinguish between the isotopes of iodine, the fractions in the glands deposited in the gland from the introduced ones will be the same. Therefore, based on the results of measuring the radioisotope content in iron obtained during the first two to three days of examination, the coefficient a is calculated, which relates the fraction of accumulation 5 (in% of the entered label) to the counting obtained by measuring with a thin crystal. After the operation, the results of measuring the long-lived J are converted to the fractions of the total activity entered by multiplying the counting rate obtained by measuring with a thin crystal by the coefficient a, which is calculated as follows. 3 (t) expC0.695 (-g; ob -) 1 N - F I5US where: Y is the fraction of the entered label,% N. is the counting rate for a thin crystal, cpm, background for a thin crystal, cpm, t is the measurement time, min. The method of determining the functional state of the thyroid gland by introducing isotopes U into the body and radiometry of their radiation from the thyroid gland with a scintillation counter, characterized in that, in order to determine the comparative localized functional activity in different phases of iodine metabolism, a low-energy isotope is also introduced : 3 and radiometry is performed separately for each lobe of the thyroid gland.
SU1997688A1974-02-011974-02-01
The method of determining the functional state of the thyroid gland
SU512672A1
(en)
Nuclear techniques for trace element and radionuclide measurements in natural waters(Radioisotope and trace element composition of natural waters and applications to biogeochemical processes)
Report of bioassay activities at Argonne National Laboratory(Iodine 131 determination in milk and urine, uranium, neptunium, and plutonium in urine, and least squares Fortran program to determine radioactive decay mixtures of count-rate data)
Major constituents determination in substances by activation analysis(Neutron activation and isotope dilution for measuring macrocomponents in substances)
Determination of trace quantities of uranium in biological materials by the nuclear track technique(Nuclear track analysis of uranium trace quantities in blood, plasma, and dried leaves)
Procedure and device for the determination of radioactivity of atmospheric precipitations (Machine-translation by Google Translate, not legally binding)
Activation analysis of chloride and iodide in photographic emulsions using 14. 7 and 2. 8 MeV neutrons(Nondestructive neutron activation analysis of chloride and iodide in photographic emulsions)
In vivo determination of the content of the nuclides K 40, Th232, Cs 137, Ra 226, and Co 60 in the human body by means of a whole- body counter(Human body radioactive nuclides in vivo quantitative analysis by gamma ray spectra, considering matrix method accuracy)
Development and application of chemical methods as a contribution to the solution of complex research problems(Development and application of chemical methods for natural science research problems including radioactive climate in underground areas and analysis of fission products in fallout)
The detection and determination of fissionable species by neutron activation- Delayed neutron counting(Neutron activation and delayed neutron counting for fission product analysis)
Activation analysis of geochemical materials using Ge/Li/ detectors(Neutron activation and gamma spectroscopy with germanium lithium detectors for geochemical analyses)
Radionuclide X-ray fluorescence analysis. 1: Excitation of X-ray fluorescense radiation by nuclear radiation(Radionuclide excitation of X ray fluorescence radiation and its application in analytic chemistry)
Routine determinations of Al, K, Cr, and Sn in geochemistry by neutron activation analysis(Neutron activation analysis of aluminum, chromium, potassium, and tin in geological samples)