Proceso de Optimización y Evaluación de una Antena Micro-coaxial para el Tratamiento de Tumores Óseos

2021 ◽  
Author(s):  
◽  
S. E. Rojas Hernández

Bone tumors are commonly treated with surgery (amputation), radiation therapy, and chemotherapy; however, its side effects compromise the patient’ quality of life. Thermotherapy is a less aggressive alternative to treat these tumors. In thermal ablation temperatures between 60 °C-100 °C must be reached in the tumor. The process to design and optimize a one-slot microwave antenna by using COMSOL Multiphysics, is proposed. An axi-symmetric 2D parametric study was carried out, in which 576 scenarios (antenna designs) were analyzed to choose the one that allowed higher energy transmission, temperature increases in the ablation range, larger areas of necrotic tissue, etc. From this study, the best scenario was chosen to evaluate its performance by using a 3D anatomical model. The final optimized antenna presented a SWR = 1.45; moreover, it was possible to observed that the 67.35% of tumor volume reaches ablation temperatures.

2017 ◽  
Vol 63 (5) ◽  
pp. 776-779
Author(s):  
Galina Tkachenko ◽  
Irina Gladilina ◽  
Aleksandra Stepanova ◽  
Anna Potapova ◽  
Anatoliy Antonov ◽  
...  

The paper presents results of clinical and psychological studies of the quality of life of elderly patients with prostate cancer following radiation therapy. Socio-psychological aspects of the quality of life were assessed using a modified scale of self-evaluation of Dembo-Rubinstein. In 3-6 months after radiation therapy there was noted significant reduction, compared to the beginning of treatment, on scales: «satisfaction with communication», «satisfaction with health», «satisfaction material conditions», «satisfaction with sexual relations», «satisfaction with activity», «satisfaction with leisure time and rest». Average indices of scales «satisfaction with health», «satisfaction with sexual relations», «satisfaction with leisure time and rest» fell below the middle. At the same time patients were not depressed by their situation did not fixed on thoughts about the disease, on the contrary the mood was significantly higher compared to the initial course of radiotherapy that could be associated with the psychological characteristics of the age of the patients in our sample.


Cancers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 450
Author(s):  
Peter Baumgarten ◽  
Mana Sarlak ◽  
Daniel Monden ◽  
Andrea Spyrantis ◽  
Simon Bernatz ◽  
...  

Seizures are among the most common symptoms of meningioma. This retrospective study sought to identify risk factors for early and late seizures in meningioma patients and to evaluate a modified STAMPE2 score. In 556 patients who underwent meningioma surgery, we correlated different risk factors with the occurrence of postoperative seizures. A modified STAMPE2 score was applied. Risk factors for preoperative seizures were edema (p = 0.039) and temporal location (p = 0.038). For postoperative seizures preoperative tumor size (p < 0.001), sensomotory deficit (p = 0.004) and sphenoid wing location (p = 0.032) were independent risk factors. In terms of postoperative status epilepticus; sphenoid wing location (p = 0.022), tumor volume (p = 0.045) and preoperative seizures (p < 0.001) were independent risk factors. Postoperative seizures lead to a KPS deterioration and thus an impaired quality of life (p < 0.001). Late seizures occurred in 43% of patients with postoperative seizures. The small sub-cohort of patients (2.7%) with a STAMPE2 score of more than six points had a significantly increased risk for seizures (p < 0.001, total risk 70%). We concluded that besides distinct risk factors, high scores of the modified STAMPE2 score could estimate the risk of postoperative seizures. However, it seems not transferable to our cohort


Author(s):  
Juan P. Martínez ◽  
Inmaculada Méndez ◽  
Esther Secanilla ◽  
Ana Benavente ◽  
Julia García Sevilla

Starting from previous studies in professional caregivers of people with dementia and other diseases in institutionalized centers of different regions, the aim of this study was to compare burnout levels that workers present depending on the center, to create a caregiver profile with high professional accomplishment and to describe the quality of life that residents perceive Murcia and Barcelona. The instruments used were the Maslach Burnout Inventory (MBI), the Professional Caregiver Survey developed ad hoc and the Brief Questionnaire of Quality of Life (CUBRECAVI in Spanish) on residents. The results show, on the one hand, that levels of professional accomplishment may be paradoxically higher in the case of catastrophe and, on the other hand, the 98.2% of users are satisfied with the residence in which is located and 81.8% with the manner in which occupy the time. The conclusions that are extrapolated from the study shed light on the current situation of workers and residents and the influence that an earthquake can have on them.


Cancer ◽  
2016 ◽  
Vol 123 (9) ◽  
pp. 1635-1642 ◽  
Author(s):  
Robert T. Dess ◽  
William C. Jackson ◽  
Simeng Suy ◽  
Payal D. Soni ◽  
Jae Y. Lee ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document