Indian Journal of Radiology Indian Journal of Radiology  

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ORIGINAL ARTICLE Table of Contents   
Year : 2002  |  Volume : 12  |  Issue : 2  |  Page : 169-178
Retrieval of true color of the internal organ of CT images and attempt to tissue characterization by refractive index : Initial experience

National Centre for Experiental Mineralogy and Petrology, Allahabad-211002, U.P, India

Correspondence Address:
T K Biwas
Biswas X-Ray and Scan Centre, G T Road west, Asansol-4, 713304, W.B
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Source of Support: None, Conflict of Interest: None

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To retrieve the true color of the internal organs and various tissues of the CT images obtained in gray scale, by determining the value of color components, density, CT (attenuation) value, refractive index (RI) and gray value of various tissues in vivo thereby revealing physics of true color sensation of tissue in various path-physiological states and to digitize the tissue and parenchyma by R.I. Materials and Methods: Physical density, CT value (No.) and refractive index of the tissues of goat and biopsy materials of various patients are determined in the laboratory and integrating such data with gray value of CT images. A computer generated color image of the organs and tissue are thus retrieved. Value of the red (R), green, blue (B) components (out of 256 shades) of true color of the tissues are obtained by a special technique of optics. Results: From all these experimental data a mathematical equation has been derived to show the relationship of CT No., refractive index and density of tissue which explains the underlying physics of true color sensation (wave length) of tissue in different patho-physiologic states. The refractive index is found to be unique for each tissue. Conclusion: All these determined values are assigned for gray value to produce a computer generated true color image of various tissue of CT images obtained in gray scale. Color of the tissue in turn determines R. I. a tool for tissue characterization.

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