background: local ablative treatments play an important role for patients who cannot be treated surgically. radiofrequency ablation is a well-established alternative to surgical treatment of thyroid nodules, however it also has disadvantages. microwave ablation (mwa) is a new minimally invasive treatment promising several improvements. the aim of this retrospective study was to evaluate the eff...

In this paper, wall thinning having values of 3 to 80% pipe thickness were detected significantly. In the experiment, a microwave network analyzer was employed to generate microwave signals propagating in the pipe where the frequency was swept from 47.38 to 47.47 GHz. By building up a resonance model for the microwave signals propagating in the pipe, and by analyzing the resonance results of th...

Background: Local ablative treatments play an important role for patients who cannot be treated surgically. Radiofrequency ablation is a well-established alternative to surgical treatment of thyroid nodules, however it also has disadvantages. Microwave ablation (MWA) is a new minimally invasive treatment promising several improvements. The aim of this retrospective study was to evaluate the eff...

Due to the complicated structure of microwave radiometric imaging system and the massive amount of data collection in one snapshot, it is difficult to achieve the high spatial resolution image by conventional microwave radiation imaging method based on the Nyquist sampling. In this paper, according to the priori information of the compressible multi-structural information of microwave radiation...

Through wall imaging (TWI) using microwave radar system is an experimental approach in real time to collect the information about the living/nonliving target object hidden behind the wall made of any dielectric material and unknown thickness. The true and exact information of the target object is dependent not only on the wall parameters (thickness and dielectric constant) but also on the opera...

Negative refraction and left-handed electromagnetism in a photonic crystal are demonstrated in waveguide and free space experiments at microwave frequencies. Precision control to achieve tailor-made refractive indices has been achieved. The negative refraction in these photonic crystals is shown to lead to imaging by a flat lens. We have also developed a generalized theory of flat lens imaging....

Microwave imaging for breast cancer detection is becoming a promising alternative technique to current imaging modalities. The significant contrast between dielectric properties of normal and malignant breast tissues makes microwave imaging a useful technique to provide important functional information for diagnoses. However, one of its limitations is that it intrinsically cannot produce high r...