Radial Radon Transform for Electrode Localization in Biological Tissue
Martin Barva, Jean Martial Mari, Jan Kybic, Christian Cachard · 2004
In this paper we describe a method for automatic electrode localization in soft tissue from radio-frequency (RF) signal. The method is exploiting a property of the Radon Transform, that allows to localize a line-segment in 3D data. The method directly processes the radiofrequency signal provided by the ultrasound probe. Thus, there is no need for ultrasound (US) image reconstruction. The method is able to detect line-segments with missing pieces. The low computational cost allows to process data fast. The algorithm was tested on a radiofrequency signal acquired by scanning a phantom containing a thin metal electrode of 150µm in diameter. The experiments show that the developed technique is capable of reliably finding an arbitrarily positioned line-segment in a 3D data.