Person:
Chevalier Del Río, Margarita

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First Name
Margarita
Last Name
Chevalier Del Río
URI
https://hdl.handle.net/20.500.14352/79316
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Medicina
Department
Radiología, Rehabilitación y Fisioterapia
Area
Radiología y Medicina Física
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1984 - 19853
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Author: Carreras Béjar, Carmen ×

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Now showing 1 - 3 of 3
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    Applications Of Optical Image Processing For The Determination Of The Optical Properties Of The Cellular Membranes.
    (10th International Optical Computing Conference, 1984) Carreras Béjar, Carmen; Chevalier Del Río, Margarita; Calvo Padilla, María Luisa
    In this paper, we present a theoretical model for the transmission function of a biological cell. Three different cases have been considered: a) Real transmission function, b) Pure phase Object, c) Mixed case where both, real and complex terms are present in the transmission function. We have studied in all those cases the response in the Fourier plane. The comparison of the models proposed above allow us to conclude that the most correct treatment would come from c). Even if the cytoplasm gives the most important contribution, neither the nucleus nor the membrane can be neglected.
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    Optical image processing to determine the optical properties of cellular membranes
    (Applied Optics, 1984) Carreras Béjar, Carmen; Chevalier Del Río, Margarita; Calvo Padilla, María Luisa
    In this paper we present a theoretical model for the transmission function of a biological cell. Three different cases are considered: real transmission function, pure phase object, general case, where both real and complex terms are present in the transmission function. In all cases we studied the response in the Fourier plane. Comparison of the proposed models leads us to conclude that the most correct treatment would come from the general case, where it was found that the membrane contribution predominates in the total diffracted amplitude distribution.
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    Influence of Small Phase Variations in the Diffraction Pattern of a Biological Cell
    (Application of optical instrumentation in medicine XIII: medical image production, processing, and display, 1985) Carreras Béjar, Carmen; Calvo Padilla, María Luisa; Chevalier Del Río, Margarita; Dwyer, Samuel J. III; Schneider, Roger H.
    In preceding works, a theoretical model has been introduced for the transmission function of a biological cell, in which the physical effects of the three transmission functions for the cytoplasm, the nucleus and the cellular membrane have been considered and studied1. Since biological cells are generally objects having small phase variations, we introduce this specific characteristic in the proposed theoretical model, in the present work, Its Fourier transform is numerically analyzed.