Biomaterial Database

Normal pancreatic echogenicity: relation to age and body fat. 1982

N J Worthen, and D Beabeau

Normal pancreatic sonograms of 161 patients were evaluated by three experienced sonographers for pancreatic echogenicity. Sonograms were given a grade for pancreatic echogenicity based on its echogenicity compared with the liver's echogenicity. Grade I was given when the pancreas equaled the liver, grade II slightly greater than the liver, grade III definitely greater than the liver, and grade IV when the pancreas was as echogenic as the retroperitoneal fat. Pancreatic echogenicity was correlated with the patient's age and subcutaneous fat. Statistical analysis by computer methods indicated that both age and body fat deposition are determinants of increasing echogenicity and that they function independently. A formula is given for the expected pancreatic echogenicity (PE) as a function of age and subcutaneous fat: PE = 0.788 + (age) (0.021 +/- 0.003) + (skin thickness) (0.48 +/- 0.08).

UI	MeSH Term	Description	Entries
D007223	Infant	A child between 1 and 23 months of age.	Infants
D008099	Liver	A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.	Livers
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D008954	Models, Biological	Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.	Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D010179	Pancreas	A nodular organ in the ABDOMEN that contains a mixture of ENDOCRINE GLANDS and EXOCRINE GLANDS. The small endocrine portion consists of the ISLETS OF LANGERHANS secreting a number of hormones into the blood stream. The large exocrine portion (EXOCRINE PANCREAS) is a compound acinar gland that secretes several digestive enzymes into the pancreatic ductal system that empties into the DUODENUM.
D010182	Pancreatic Diseases	Pathological processes of the PANCREAS.	Disease, Pancreatic,Diseases, Pancreatic,Pancreatic Disease
D012044	Regression Analysis	Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.	Regression Diagnostics,Statistical Regression,Analysis, Regression,Analyses, Regression,Diagnostics, Regression,Regression Analyses,Regression, Statistical,Regressions, Statistical,Statistical Regressions
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man