Percutaneous microwave coagulation therapy (PMCT) is a new technique for the treatment of hepatocellular carcinoma (HCC). However, it is difficult to distinguish those lesions in which necrosis has been induced from the viable residual lesions during the procedure, because the margin of the tumor becomes unclear during PMCT. We determined the area of necrotic lesions during the procedure using ...

Early-stage cancer detection could reduce breast cancer death rates significantly in the long-term. The most critical point for best prognosis is to identify early-stage cancer cells. Investigators have studied many breast diagnostic approaches, including mammography, magnetic resonance imaging, ultrasound, computerized tomography, positron emission tomography and biopsy. However, these techniq...

Reconstruction of inhomogeneous dielectric objects from microwave scattering by means of quantitative microwave tomography is a nonlinear, ill-posed inverse problem. In this paper, we employ the Huber function as a robust regularization approach for this challenging problem. The resulting reconstructions both in 2D and 3D from sparse data points for piecewise constant objects are encouraging. T...

Synthetic-aperture microwave imaging with ground penetrating radar systems has become a research topic of great importance for the potential applications in sensing and profiling of civil and geophysical structures. It allows us to visualize subsurface structures for nondestructive evaluation with microwave tomographic images. This paper provides an overview of the research program, ranging fro...

Arrowroot (Maranta arundinacea) and Chitosan are two well-known materials used in medical and scientific applications. Both materials possess medicinal properties and have the ability to form thick gels. Chitosan-reinforced Arrowroot film was developed and its dielectric characterization was performed at microwave frequencies. Cavity perturbation method was used for the measurement. The study p...

Significant progress has been made in recent years in the development of microwave tomographic imaging systems for medical applications. In order to design an appropriate microwave imaging system for industrial applications, and to interpret the images produced, the materials under imaging need to be characterised. In this paper, we describe the use of open-ended coaxial probes for the measurem...

Many geophysical parameters can be determined with the aid of a passive microwave sensor. To achieve a high spatial resolution in passive microwave imaging the method of aperture synthesis can be applied. Narrowband radiometric measurements within a wide frequency range allow extracting more surface information on observed objects or materials and it is possible to obtain depth information on l...

Abstract Hyperthermia therapy is a promising for liver cancer treatment that utilizes external electromagnetic waves to heat the tumor zone preferentially kill or minimize cells. Nevertheless, it’s challenge realize localized heating of tissue without harming surrounding healthy tissue. This research proposes utilize nanoparticles as microwave absorbers enhance imaging and achieve hyperthermia ...

BACKGROUND Microwave endometrial ablation is an effective treatment for dysfunctional uterine bleeding. Patients with leiomyomata, including submucosal leiomyomata up to 3 cm, may also be treated with microwave endometrial ablation. CASES A 46-year-old woman with multiple leiomyomata and menometrorrhagia underwent microwave endometrial ablation. Two months after microwave endometrial ablation...

Among imaging sensors, RADAR, an acronym for RAdio Detection And Ranging, is generally used in different modes. The radar system transmits a microwave signal directing towards the region of interest and detects the signal backscattered by the surface. Due to long wavelength, microwave signal can penetrate through cloud cover, haze, dust and heavy rainfall. This property of microwaves helps in a...