Blood flow estimation in gastroscopic true-color images

Raffael Sebastian Jacoby; Rainer Herpers; Franz Maximilian Zwiebel; Karl-Hans Englmeier

doi:10.1117/12.209680

24 May 1995 Blood flow estimation in gastroscopic true-color images

Raffael Sebastian Jacoby, Rainer Herpers, Franz Maximilian Zwiebel, Karl-Hans Englmeier

Proceedings Volume 2433, Medical Imaging 1995: Physiology and Function from Multidimensional Images; (1995) https://doi.org/10.1117/12.209680
Event: Medical Imaging 1995, 1995, San Diego, CA, United States

Abstract

The assessment of blood flow in the gastrointestinal mucosa might be an important factor for the diagnosis and treatment of several diseases such as ulcers, gastritis, colitis, or early cancer. The quantity of blood flow is roughly estimated by computing the spatial hemoglobin distribution in the mucosa. The presented method enables a practical realization by calculating approximately the hemoglobin concentration based on a spectrophotometric analysis of endoscopic true-color images, which are recorded during routine examinations. A system model based on the reflectance spectroscopic law of Kubelka-Munk is derived which enables an estimation of the hemoglobin concentration by means of the color values of the images. Additionally, a transformation of the color values is developed in order to improve the luminance independence. Applying this transformation and estimating the hemoglobin concentration for each pixel of interest, the hemoglobin distribution can be computed. The obtained results are mostly independent of luminance. An initial validation of the presented method is performed by a quantitative estimation of the reproducibility.

Citation Download Citation

Raffael Sebastian Jacoby, Rainer Herpers, Franz Maximilian Zwiebel, and Karl-Hans Englmeier "Blood flow estimation in gastroscopic true-color images", Proc. SPIE 2433, Medical Imaging 1995: Physiology and Function from Multidimensional Images, (24 May 1995); https://doi.org/10.1117/12.209680

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KEYWORDS

Blood circulation

Endoscopy

Image segmentation

Blood

Cameras

Light scattering

Reflectance spectroscopy

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