Study of streamline flow in the portal system
The study was undertaken to determine if streamline flow occurs in the portal vein, thus separating inflow from the superior mesenteric artery (SMA) and the inferior mesenteric artery. Previously published data on this subject is inconsistent. Patients undergoing abdominal angiography received two administrations of Tc-99m sulfur colloid, first via the SMA during angiography and, after completion of the angiographic procedure, via a peripheral vein (IV). Anterior images of the liver were recorded over a three minute acquisition before and after the IV injection without moving the patient. The image from the SMA injection was subtracted from the SMA and IV image to provide a pure IV image. Analysis of R to L ratios for selected regions of interest as well as whole lobes was carried out and the shift of R to L (SMA to IV) determined. Six patients had liver metastases from the colon, four had cirrhosis and four had no known liver disease. The shift in the ratio was highly variable without a consistent pattern. Large changes in some patients could be attributed to hepatic artery flow directed to metastases. No consistent evidence for streamlining of portal flow was discerned.
- Research Organization:
- State Univ. of New York, Stony Brook, NY
- OSTI ID:
- 6760248
- Report Number(s):
- CONF-850611-
- Journal Information:
- J. Nucl. Med.; (United States), Journal Name: J. Nucl. Med.; (United States) Vol. 26:5; ISSN JNMEA
- Country of Publication:
- United States
- Language:
- English
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551001 -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
ABDOMEN
ARTERIES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOMEDICAL RADIOGRAPHY
BLOOD FLOW
BLOOD VESSELS
BODY
BODY AREAS
CARDIOVASCULAR SYSTEM
COLLOIDS
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
DIGESTIVE SYSTEM
DISEASES
DISPERSIONS
DISTRIBUTION
DRUGS
FLUID FLOW
GASTROINTESTINAL TRACT
GLANDS
HOURS LIVING RADIOISOTOPES
IMAGES
INTERMEDIATE MASS NUCLEI
INTESTINES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LAMINAR FLOW
LARGE INTESTINE
LIVER
MEDICINE
METABOLIC DISEASES
METABOLISM
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PORTAL SYSTEM
RADIOCOLLOIDS
RADIOISOTOPE SCANNING
RADIOISOTOPES
RADIOLOGY
RADIONUCLIDE KINETICS
RADIOPHARMACEUTICALS
SCINTISCANNING
SULFUR COMPOUNDS
TECHNETIUM 99
TECHNETIUM ISOTOPES
TISSUE DISTRIBUTION
TRACER TECHNIQUES
UPTAKE
VEINS
YEARS LIVING RADIOISOTOPES