Edgar Scherleitner, Bernhard Zagar,
"Optical Tomography Imaging Based on Higher-order Born Approximation of Diffuse Photon Density Waves"
: IEEE Transactions on Instrumentation and Measurement, Vol. 54, Nummer 4, Seite(n) 1607-1611, 8-2005
Optical Tomography Imaging Based on Higher-order Born Approximation of Diffuse Photon Density Waves
Sprache des Titels:
IEEE Transactions on Instrumentation and Measurement
In the proposed paper we introduce a tomographical system suitable for imaging absorbers in strongly scattering media using a single light source-detector pair. Their
reflective alignment would make it possible to implement both source and detector into a scan--head. Suitable probes would be soft tissue, some strongly scattering biological probes or translucent technical materials for example.
An intensity-modulation technique is utilized to take advantage of the amplitude and delay alterations between the source and the detector. The propagation of the photons is modeled by the Helmholtz equation and then propriate inverse calculations of several measurements reveal the distribution of the absorption coefficient inside the investigated volume. Therefore a reconstruction algorithm employing a Born-approximation of higher order and a Tikhonov-regularisation scheme was used to solve the deduced ill-posed and underdetermined system of equations.
In this paper we present results of simulations as well as results of measurements.