Analysis of resonant particles in a coplanar microwave sensor array for thermal ablation of organic tissue

Evolution of a microwave instrument for analysis and thermal ablation of organic tissue

“…Furthermore, measurements with animal lung tissue and phantoms of organic tissue were also carried out and thoroughly discussed in [4], [8]. Additional information on the phantoms can be obtained in [9]. One example is shown in Fig.…”

“…The second mode performs thermal ablation treatment when a malignancy is located. The design and fabrication of this dual mode tool have been presented in [3], [9] and a reduction in size is necessary for this final prototype so it can finally be included in a minimal invasive surgery tool. Once an abnormality is detected, the tool can change its operation mode by controlling the input frequency and power to heat the tissue at a particular location, i.e.…”

“…For future work, the effect of different types of malignant tissues with different sizes and locations within the healthy tissue can be addressed specially to proof that malignant tissue can heat faster than its healthy counterpart [5]. For these devices the measurements are done using the phantoms of human tissue and are presented in [3], [9]. One example is shown in Fig.…”

“…It causes additional difficulties for sensing the location of abnormalities since the loaded tissue will influence not only the resonator particle but the microstrip line as well. This is going to dramatically deteriorate the hot spot creation in terms of size and position, and leads only to hot spots on the far side of the SRR, independent of its orientation and configuration as seen in [11]. It was found that the influence of the microstrip line invalidates the freedom of hot spot creation by proper resonant particle design.…”

“…In this case the pair of SRRs are decoupled to resonate at different frequencies by changing the diameter of the rings. The comparison between the studied particles is discussed in [11] and from this analysis was concluded that SRRs and the spiral resonators have a better performance and are more suited to be included in an array configuration. In Fig.…”