Computerized tomographic study of normal Evans index in adult Nigerians
نویسندگان
چکیده
منابع مشابه
Principles of Computerized Tomographic Imaging
The total attenuation suffered by one beam of x-rays as it travels in a straight line through an object can be represented by a line integral. Combining a set of line integrals forms a projection. With the filtered back projection a three-dimensional reconstruction of the object can de made by using projections from different angles. The quality of a reconstructed image depends on the number of...
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We consider the problem of reconstructing an object function f(r) from finitely many linear functional values. In our main application, the function f(r) is a tomographic image, and the data are integrals of f(r) along thin strips. Because the data are limited, resolution can be enhanced through the inclusion of prior knowledge. One way to do that, a generalization of the prior discrete Fourier...
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Ventricular enlargement in normal aging frequently forces the radiological diagnosis of hydrocephalus, but the reliability of Evans' index as a radiological marker of abnormal ventricular enlargement (values > 0.30) during aging is not assessed. Here we analyze ventricular size during aging and the reliability of Evans' index as a radiological marker of abnormal ventricular enlargement. We calc...
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This study assessed healthy young adults to determine the normal limits for electrocardiographic variables and cut-off values for left ventricular hypertrophy. It was a cross sectional descriptive study in which the participants were evaluated clinically by standard 12-lead resting electrocardiogram (ECG) at 25 mm/s during quiet respiration. The heart rate, P wave duration, axis and amplitude, ...
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ژورنال
عنوان ژورنال: Journal of Neurosciences in Rural Practice
سال: 2015
ISSN: 0976-3147,0976-3155
DOI: 10.4103/0976-3147.143195