Method for localizing at least one focal lesion in a...

Details Method for localizing at least one focal lesion in a... Method for localizing at least one focal lesion in a...

2007-04-24

2007-04-24

Hindenburg, Max F. (Department: 3736)

Surgery

Diagnostic testing

Measuring electrical impedance or conductance of body portion

Reexamination Certificate

active

10336456

ABSTRACT:
In a method for localizing at least one focal lesion in a biological tissue section, the lesion exhibiting an electrical property different from the tissue section and the electrical property in the tissue section being essentially constant, a sequence of electrical excitation signals with different frequency is applied to the tissue section, electrical response signals at a number of measurement locations at a surface of the tissue section are measured that occur thereat due to the excitation signals, frequency-independent signal parts in the response signals are determined and further-processed input values of a localization step. Modeling of the tissue section and a determination of a set of lead fields are based on the input values. The lead fields transformed. The frequency-independent signal parts are compared to the transformed lead fields in the localization step, and the location of the transformed lead fields that best reproduce the frequency-independent signal parts is output as location of the lesion.

REFERENCES:
patent: 4458694 (1984-07-01), Sollish et al.
patent: WO 96/12439 (1996-05-01), None
patent: WO 99/48422 (1999-09-01), None
Towards Virtual Electrical Breast Biopsy: Space-Frequency MUSIC for Trans-Admittance Data—Scholz IEEE Trans. on Medical Imaging, vol. 21, No. 6 Jun. 2002 pp. 588-595.

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