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[Quantitative evaluation of muscle blood flow by the clearance of locally injected 133Xe]. / Kolichestvennaia otsenka myshechnogo krovotoka po klirensu mestno in"etsiruemogo 133Xe.

Frolov, V K; Koptev, I V; Koshkin, V M; Porai-Koshits, A K.

Med Radiol (Mosk) ; 25(7): 59-65, 1980 Jul.

Article in Russian | MEDLINE | ID: mdl-7401960

Subject(s)

Muscles/blood supply , Xenon Radioisotopes , Adult , Aged , Female , Humans , Injections, Intramuscular , Leg/blood supply , Male , Metabolic Clearance Rate , Methods , Middle Aged , Regional Blood Flow

[Radionuclide measurements of the rate of volumetric blood flow in the crura]. / Radionuklidnye izmereniia velichiny ob''emnogo krovotoka v goleniakh.

Frolov, V K; Koptev, I V.

Med Radiol (Mosk) ; 25(1): 24-8, 1980 Jan.

Article in Russian | MEDLINE | ID: mdl-7354710

Subject(s)

Blood Volume Determination/methods , Leg/blood supply , Radionuclide Imaging/methods , Blood Flow Velocity , Humans , Mathematics , Regional Blood Flow

[Methods of determining gamma chamber modulation transfer function]. / Metody opredeleniia funktsii peredachi moduliatsii gamma-kamer.

Koptev, I V; Pavlov, V G; Frolov, V K.

Med Radiol (Mosk) ; 23(12): 69-73, 1978 Dec.

Article in Russian | MEDLINE | ID: mdl-723496

Subject(s)

Radiographic Image Enhancement/methods , Gamma Rays , Mathematics , Models, Structural , Scintillation Counting/instrumentation

[Reconstruction of scintigraphic images using a computer]. / Rekonstruktsiia stsintigraficheskikh izobrazhenii s pomoshch'iu EVM.

Devishev, M I; Koptev, I V.

Med Tekh ; (6): 20-5, 1978.

Article in Russian | MEDLINE | ID: mdl-364238

Subject(s)

Diagnosis, Computer-Assisted , Radiographic Image Enhancement/methods , Radionuclide Imaging/methods , Computers , Mathematics , Models, Theoretical , Radionuclide Imaging/instrumentation

[Method of assessing the information content of gamma chambers in studying mobile organs]. / Metodika otsenki informativnosti gamma-kamer pri issledovanii podvizhnykh organov.

Koptev, I V; Pavlov, V G.

Med Tekh ; (6): 17-20, 1978.

Article in Russian | MEDLINE | ID: mdl-723534

ABSTRACT

In investigating mobile organs, such as the liver, lungs, spleen and heart their image on the scintigram is blurred which deteriorates the function of the modulation transmission (FMT). An analytical expression for calculating the FMT in investigating the mobile organs was deduced. Examples of the FMT impairement in investigating the liver and heart are cited. Concrete recommendations for increasing the informativeness of investigation with a gamma-chamber are given.

Subject(s)

Scintillation Counting/methods , Gamma Rays , Heart/diagnostic imaging , Humans , Liver/diagnostic imaging , Mathematics , Radiographic Image Enhancement/methods , Radionuclide Imaging , Spleen/diagnostic imaging

[Method of computer angioscintigraphy for the determination organ blood flow (author's transl)]. / Methodik zur Computerangioszintigraphie zur Bestimmung der Organdurchblutung

Zubovskij, G A; Devisev, M I; Koptev, I V; Smirnova, N K.

Radiol Diagn (Berl) ; 17(4): 569-77, 1976.

Article in German | MEDLINE | ID: mdl-1005700

Subject(s)

Cerebral Angiography/methods , Cerebrovascular Circulation , Computers , Radionuclide Imaging/methods , Brain Neoplasms/diagnosis , Brain Neoplasms/diagnostic imaging , Female , Humans , Middle Aged

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