A brief history of X-ray control methods is presented, and
the instrumentation requirements and physiological considerations
pertaining to an automatic X-ray control system are discussed.
The latter half of the thesis describes the design and operation
of a device which will permit medical radiographs to be taken
automatically and at...
The purpose of this study was three-fold: to determine how
the false assumption of an abnormal heart condition affected the
lives of false-positive students; the effects of phonocardioscan screening
and cardiologist follow-up procedures on delabeled school children;
and the effectiveness of the follow-up procedures used in
delabeling the false-positive students....
Division of labor in household food preparation tasks is of
interest in dietary intervention projects. Randomly selected families
were recruited to participate in a 5-year family-based study. A small
group format that emphasized family involvement was used to promote
change from the American diet (40% fat, 500 mg cholesterol P/S...
Abdominal obesity is a part of insulin resistance syndrome that is closely
linked to increased risk of coronary artery disease (CAD). Because fat tissue acts as
an endocrine target and source of hormone production, increased metabolism or
production of chemical messengers in fat tissue may result in metabolic perturbations
that...
Coronary Heart Disease (CHD) accounts for almost 20% of all deaths in the United States and is a leading cause of premature death and disability. The cost for this disease includes not only lost work years, but billions of health care dollars. Women account for almost half of the deaths...
This paper discussed the human electrocardiogram, the instrumentation
used to graphically record it, and the design and performance
of a specialized system for vector cardiography: the Vector Electrocardioscope
(VECS) System. The introduction reviews in considerable
detail the pertinent known physiology of the heart, especially the
electrophysiology responsible for the genesis...
The purpose of this study was: 1) to compare the
change in QT interval values before, during, and after
exercise following carbohydrate depletion and loading, and
2) to assess the change following vitamin B-6 supplementation.
ECG monitoring devices and bicycle ergometers were
used to collect ECG tracings and control the...
The statistical correlations between habitual diet and plasma
risk factors for coronary heart disease CHD were analyzed using
multiple regression. Thirty-one male subjects between 30-56 years
kept complete dietary records for 7 days. Daily means of nutrient
consumption were calculated using a computerized data base.
Fourteen independent variables (total kilocalories,...