Comparing image reconstruction algorithms for microwave camera featuring ultra wide band sensor

Zanoon, Tareq F A; Hathal, Mohammed Sadoon; Abdullah, Mohd Zaid

doi:10.1109/ist.2011.5962186

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…To validate the image reconstruction approach, both DAS and EDAS algortihms are tested using data obtained via numerical and experimental setups [14]. The results obtained are compared to asses the fidelity and accuracy of the proposed technique.…”

Section: Image Reconstructionmentioning

confidence: 99%

“…Over the years this algorithm has undergone several enhancements and iterative refinements [13]. An enhanced version of the delay and sum (EDAS) has been developed and tested in our lab, where the initial results obtained from simulated and experimental recordings demonstrate the capability of effectively reducing clutter and improving the image-tosignal ratio [14]. As compared to DAS, EDAS comprises two processing techniques, which are focusing quality and multiplication in pair.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Radar Sensing Featuring Biconical Antenna and Enhanced Delay and Sum Algorithm for Early Stage Breast Cancer Detection

Tiang¹,

Sadoon²,

Zanoon³

et al. 2013

PIER B

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Abstract-A biconical antenna has been developed for ultrawideband sensing. A wide impedance bandwidth of around 115% at bandwidth 3.73-14 GHz is achieved which shows that the proposed antenna exhibits a fairly sensitive sensor for microwave medical imaging applications. The sensor and instrumentation is used together with an improved version of delay and sum image reconstruction algorithm on both fatty and glandular breast phantoms. The relatively new imaging set-up provides robust reconstruction of complex permittivity profiles especially in glandular phantoms, producing results that are well matched to the geometries and composition of the tissues. Respectively, the signal-to-clutter and the signal-to-mean ratios of the improved method are consistently higher than 5 dB and 10 dB, corresponding to an average increase in image fidelity of more than 140% compared to conventional radar focusing technique.

show abstract

Section: Image Reconstructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Radar Sensing Featuring Biconical Antenna and Enhanced Delay and Sum Algorithm for Early Stage Breast Cancer Detection

Tiang¹,

Sadoon²,

Zanoon³

et al. 2013

PIER B

View full text Add to dashboard Cite

show abstract

“…Furthermore, the method produces quantitative images, hence simplifying detection and identification of targets. A comparative study featuring the performance of the algorithm is found in [47].…”

Section: Discussionmentioning

confidence: 99%

Early stage breast cancer detection by means of time-domain ultra-wide band sensing

Zanoon

Abdullah

2011

Meas. Sci. Technol.

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The interest in the use of ultra-wide band (UWB) impulses for medical imaging, particularly early stage breast cancer detection, is driven by safety advantage, super resolution capability, significant dielectric contrast between tumours and their surrounding tissues, patient convenience and low operating costs. However, inversion algorithms leading to recovery of the dielectric profile are complex in their nature, and vulnerable to noisy experimental conditions and environment. In this paper, we present a simplified yet robust gradient-based iterative image reconstruction technique to solve the nonlinear inverse scattering problem. The calculation is based on the Polak–Ribière's approach while the Broyden's formula is used to update the gradient in an iterative scheme. To validate this approach, both numerical and experimental results are presented. Animal derived biological targets in the form of chicken skin, beef and salted butter are used to construct an experimental breast phantom, while vegetable oil is used as a background media. UWB transceivers in the form of biconical antennas contour the breast forming a full view scanning geometry at a frequency range of 0–5 GHz. Results indicate the feasibility of experimental detection of millimetre scaled targets.

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Experimental ultra wide band imaging using heterogeneously dense breast phantom for early cancer detection

Hathal

Zanoon

Ain

et al. 2012

2012 IEEE International Conference on Imaging Systems and Techniques Proceedings

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Comparing image reconstruction algorithms for microwave camera featuring ultra wide band sensor

Cited by 5 publications

References 21 publications

Radar Sensing Featuring Biconical Antenna and Enhanced Delay and Sum Algorithm for Early Stage Breast Cancer Detection

Radar Sensing Featuring Biconical Antenna and Enhanced Delay and Sum Algorithm for Early Stage Breast Cancer Detection

Early stage breast cancer detection by means of time-domain ultra-wide band sensing

Experimental ultra wide band imaging using heterogeneously dense breast phantom for early cancer detection

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