Published 1986
| Version v1
Miscellaneous
Radioisotopic evaluation of portal circulation
Creators
- 1. Rio de Janeiro Univ. (Brazil). Hospital Universitario
- 2. Rio de Janeiro Univ. (Brazil). Inst. de Biofisica
Description
The use of a radio-tracer of portal circulation through the intestine, should prevent cruel punctures in the portal-vein or spleen as it is usually the case with traditional methods in the study of portal-system. The absorption of I-131 and Tc-99m, previously cheked in rabbits presented similar results in dogs. The time of circulation between terminal large-intestine and the liver (t-RF) was determined by external counting at hepatic level by recording radioactivity variation-time. In healthy animals the t-RF was from 20to 60 seconds, with average time of 42 seconds. In 2 animals with partial binding of portal-vein the t-RF went up to 110 and 120 seconds. (Author)
Abstract (Portuguese)
O sistema porta drena o sangue venoso do estomago, intestino e baco para ser 'filtrado' no figado. As doencas que causam aumento da resistencia ao fluxo portal levam a hipertensao porta e nao raro a graves hemorragias de varizes do esofago. A utilizacao de um radiotracador absorvivel pelo intestino evitaria o acesso cruento ao sistema, como ocorre com os metodos convencionais. A absorcao do I-131 e do Tc-99m, verificada em coelhos, apresentou o mesmo comportamento em caes. O tempo entre a administracao retal profunda do tracador e sua chegada ao figado (t-RF) foi determinada por deteccao externa e registro grafico. Em animal higidos o t-RF variou de 20 a 60 segundos (media 42 segundos). Em 2 animais com ligaduras parciais da veia porta o t-RF aumentou para 110 e 120 segundos. (Autor)Additional details
Additional titles
- Subtitle (English)
- Experimental study
- Original title (Portuguese)
- Avaliacao radioisotopica da circulacao porta
- Original subtitle (Portuguese)
- Estudo experimental.
Publishing Information
- Imprint Title
- Proceedings of the 1. General Congress of Nuclear Energy. v. 2
- Imprint Pagination
- 443 p.
- Journal Page Range
- v. 2 p. 130-133.
- Report number
- INIS-BR--537(v.2)
Conference
- Title
- 1. General Congress of Nuclear Energy.
- Dates
- 17-20 Mar 1986.
- Place
- Rio de Janeiro, RJ (Brazil).
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 17068142
- Subject category
- S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- DOGS; INTESTINAL ABSORPTION; IODINE 131; LIVER; PORTAL SYSTEM; RABBITS; RADIONUCLIDE ADMINISTRATION; RADIONUCLIDE KINETICS; RECTUM; TECHNETIUM 99; TIME MEASUREMENT; TRACER TECHNIQUES
- Descriptors DEC
- ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BLOOD VESSELS; BODY; CARDIOVASCULAR SYSTEM; DAYS LIVING RADIOISOTOPES; DIGESTIVE SYSTEM; GASTROINTESTINAL TRACT; GLANDS; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; INTESTINES; IODINE ISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPE APPLICATIONS; ISOTOPES; KINETICS; LARGE INTESTINE; MAMMALS; NUCLEI; ODD-EVEN NUCLEI; ORGANS; RADIOISOTOPES; TECHNETIUM ISOTOPES; UPTAKE; VEINS; VERTEBRATES; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- Imprint:Anais do 1. Congresso Geral de Energia Nuclear. v. 2.