Inverse method for the detection of a foreign object using microwave measurements

Senaratne, G. G.; Sweatman, W. L.; Wake, G. C.; Simpkin, Ray

doi:10.1049/iet-smt:20070074

Cited by 1 publication

(3 citation statements)

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“…Therefore, the measured data with and without a tumour should be easily distinguished despite these other effects. However, the reflection from the chest wall may have to be considered separately, although this effect can be included in the forward equation [21,28].…”

Section: Discussionmentioning

confidence: 99%

“…Calculations of the field vectors and the subsequent verification using the experimental measurements have been discussed in Ref. [21]. Solution of the inverse problem can be used to find the size and the location of the internal object and the routine is summarised as follows.…”

Section: The Inverse Problem In the Two-dimensional Studymentioning

confidence: 99%

“…More details of the experimental measurements and the calculation of unknowns using the measured data are explained in Ref. [21].…”

Section: Introductionmentioning

confidence: 99%

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Solutions of Inverse Problems with Potential Application for Breast Tumour Detection Using Microwave Measurements

Senaratne

Sweatman

Wake

2007

Computational and Mathematical Methods in Medicine

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This paper presents one-dimensional and two-dimensional microwave inverse computing methods to detect an internal object using measurements based on a signal applied from the surface of the host material. The modelling of our application system has been aimed towards the in vivo detection of a breast tumour, in particular, and to enable the calculation of the tumour size and its distance from the surface of the breast. However, our approach is also applicable for more general foreign object identification. Complex backscattered electromagnetic waves characterise the relations of the internal properties of the host material. Forward and backscattered signals are used to calculate the impedance and reflection coefficients as a function of the applied microwave frequency. In the study of onedimensional modelling, we discuss the approach to identifying a foreign object hidden inside the host material and we present a method for computing the distance to the object from the surface of the host. Subsequently, a cylindrical coordinate system is used for two-dimensional modelling. A method to compute the size of the object (up to one millimetre in radius) is discussed. Computation of unknown electrical and non-electrical parameters using front-end microwave application is challenging but it is feasible.

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Section: Discussionmentioning

confidence: 99%

Section: The Inverse Problem In the Two-dimensional Studymentioning

confidence: 99%