Towards optimization of open ended contact probes for breast cancer diagnosis
Towards optimization of open ended contact probes for breast cancer diagnosis
Tarih
2018
Yazarlar
Yılmaz, Tuba
Süreli Yayın başlığı
Süreli Yayın ISSN
Cilt Başlığı
Yayınevi
IEEE
Özet
Development of new modalities for breast cancer detection have been a research
interest due to the drawbacks of existing diagnostic technologies such as imaging with ionizing
waves. In particular, microwave imaging has been investigated in the literature as a new modality
for breast cancer detection. Microwave imaging is a promising technique due to the high dielectric
contrast between benign and malignant lesions. With this motivation, the dielectric properties
of the benign and malignant breast tissues were measured and such measurements have been
performed with the open ended contact probes. The open ended contact probe technique widely
used in laboratory environment to characterize the dielectric properties of materials with high
permittivity and conductivity due to the advantages such as broad band measurement capabilities
and limited sample size requirements. The utilization of the open ended contact probe technique
as a breast cancer diagnostic technology have been previously envisioned in the literature. One
such application is integration of these probes to biopsy guides to diagnose whether the breast
lesions are benign or malignant. However, due to the poor measurement accuracy and repeatability the utilization of the technique as a diagnostic technology was not realized. The drawbacks
of the technology mostly stem from the mathematical approaches and the deviations from the
initial calibration conditions. In this work, to increase the accuracy of the open ended contact
probe measurement technique, the probe structure is redesigned by removing the microwave connections and integrating the probe with the RF cable. Probe simulations are performed with
Computer Simulation Technology (CST). The probe is tested with both known materials and
more complex environments such as methanol and phantom experiments. Oil-in-gelatine dispersion phantom materials are composed and measured with the designed probe. Probes with small
aperture diameters were also evaluated to investigate the potential practical utilization of such
probes. Dielectric properties are calculated with in-house dielectric property retrieval algorithm.
A good agreement is obtained with the reference data.
Açıklama
Anahtar kelimeler
Breast cancer
Alıntı
Yilmaz, T. (2018). Towards Optimization of Open Ended Contact Probes for Breast Cancer Diagnosis. In 2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama) (pp. 993–999). IEEE. https://doi.org/10.23919/PIERS.2018.8598233