Balter, As.

Balter Medical, As.

Balter, Inc.

Jakob J Stamnes

Knut Stamnes

Gennady Ryzhikov

Lu Zhao

Boerge Hamre

Johan E Moan

Marina Buryulina

Kristian Pagh Nielsen

Marina Biryulina

Endre R Sommersten

Kristian P Nielsen

Systems and methods for discriminating between malignant and benign pigmented skin lesions based on optical analysis using spatial distribution maps, morphological parameters, and additional diagnostic parameters derived from images of tissue lesions. A handheld optical transfer diagnosis device is disclosed capable of capturing a series of reflectance images of a skin lesion at a variety of angles of illumination and observation.

Optical transfer diagnosis for detection and monitoring of tissue disorders

An embodiment of the present invention includes a method for discriminating between benign and malignant tissue lesions. The method includes the steps of using a plurality of maps of physiology and morphology parameters generated from reflectance measurements and morphology parameters generated from reflectance measurements. The method also includes calculating entropies and cross entropies of the plurality of maps, and calculating a plurality of morphology parameters. Further, the method includes assigning a weight to each entropy and a weight to a logarithm of each entropy, a weight to each cross entropy and a weight to a logarithm of each cross entropy, and a weight to each morphology parameter and a weight to a logarithm of each morphology parameter. The method further includes computing a diagnostic index, defining a cost function, defining a proper threshold value for a diagnostic index and solving an optimization problem to determine a set of weights from the assigned weights to maximize specificity for 100% sensitivity. Further, the method uses calculations, the cost function and the diagnostic index to determine whether the tissue lesion is benign or malignant.

Optical transfer diagnosis (OTD) method for discriminating between malignant and benign tissue lesions

In an embodiment of the present disclosure, an optical method for determining morphological parameters and physiological properties of tissue is presented. The method includes using reflectance measurements from a tissue area for a plurality of wavelengths, using a bio-optical model, using radiative transfer modeling and using a non-linear inversion procedure. The method further includes systematically varying values of the morphological parameters and physiological properties of the tissue and simultaneously varying the inherent optical properties, which are linked to the morphological parameters and the physiological properties of the tissue, until the non-linear inversion procedure returns values for the morphological parameters and the physiological properties of the tissue such that an agreement between the reflectance measurements and reflectances computed by the radiative transfer model, based on the returned morphological parameters and the physiological properties of the tissue values and corresponding inherent optical properties values, reach a predetermined level of accuracy.

Optical method for determining morphological parameters and physiological properties of tissue

The present invention relates to a method and an arrangement for the determination of the optical properties of a multi-layered tissue. More specifically, the invention relates to a method for the detection and characterisation of tumors in a tissue.

Method and an arrangement for the determination of the optical properties of a multi-layered tissue

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Oslo, Norway

Jakob J Stamnes