Search results for "Ablation"
showing 10 items of 322 documents
Graphene oxide surface functionalization of polymeric scaffolds for the recruitment and thermal ablation of tumor cells
2017
Transcatheter radiofrequency perforation and stent implantation for palliation of pulmonary atresia in a 3060-g infant
1995
In a 3060-g infant with fibromuscular pulmonary atresia an open right ventricular outflow tract was created by means of interventional cardiological methods. Following two inadvertent perforations without sequelae or clinical symptoms, radiofrequency perforation and subsequent balloon dilatation were successfully performed. The implantation of a Palmaz iliac stent led to a predictable communication between the right ventricle and pulmonary artery.
Usefulness of SonoVue-enhanced Pulse-Inversion Ultrasonography to Assess Hepatocellular Carcinoma Response after Percutaneous Radiofrequency Thermal …
2006
Incidence of new foci of Hepatocellular Carcinoma in patients who underwent radiofrequency ablation of Hepatocellular Carcinoma: Role of MDCT
2009
Hepatocellular cancer response to radiofrequency ablation: contrast-enhanced ultrasound
2008
Hepatocellular cancer response to radiofrequency tumor ablation: contrast-enhanced US
2008
Loco-regional treatment of hepatocellular carcinoma: Role of contrast-enhanced ultrasonography
2022
Hepatocellular carcinoma (HCC) is one of the few cancers for which locoregional treatments (LRTs) are included in international guidelines and are considered as a valid alternative to conventional surgery. According to Barcelona Clinic Liver Cancer classification, percutaneous treatments such as percutaneous ethanol injection, radiofrequency ablation and microwave ablation are the therapy of choice among curative treatments in patients categorized as very early and early stage, while transcatheter arterial chemoembolization is considered the better option for intermediate stage HCC. A precise assessment of treatment efficacy and surveillance is essential to optimize survival rate, whereas r…
Thermo-optical studies of NaNbO3thin films
2007
Thermo-optical studies of sodium niobate NaNbO3 (NN) thin films, deposited by the pulsed laser ablation technique on Si/SrRuO3 substrates, were performed by spectroscopic ellipsometry in the temperature range 300-550°C. Optical constants at the room temperature were measured in the spectral range 250-1000 nm. Substantial changes in the refractive index temperature behaviour (taken at λ = 300 nm) were found at temperatures 370, 445, 503, 520, and 532°C, where the first and the last temperatures are the phase transitions P → R and S → T1, respectively. Other temperatures (445, 503, and 520°C) are suggested as the points of some local structural changes in the NN film.
Microwave-induced thermoablation with Amica-probe is a safe and reproducible method to treat solid renal masses: results from a phase I study.
2012
Microwave thermal ablation (MWTA) could be considered in the future for treating small solid renal masses. The aim of the present study was to determine both the tolerability of the new Amica-probe applicator-induced MWTA used in vivo on patients with solid renal masses and the effects of heating on renal tumors and normal renal parenchyma. Fourteen patients with renal masses eligible for open radical nephrectomy were enrolled in this phase I study. All patients underwent MWTA of renal masses during the open surgery procedure before clamping of renal vascular pedicle. The effects of MWTA on patients' coagulation and tumor/renal vasculature were investigated. The histological effects of MWTA…
Computer-Assisted Approaches for Uterine Fibroid Segmentation in MRgFUS Treatments: Quantitative Evaluation and Clinical Feasibility Analysis
2019
Nowadays, uterine fibroids can be treated using Magnetic Resonance guided Focused Ultrasound Surgery (MRgFUS), which is a non-invasive therapy exploiting thermal ablation. In order to measure the Non-Perfused Volume (NPV) for treatment response assessment, the ablated fibroid areas (i.e., Region of Treatment, ROT) are manually contoured by a radiologist. The current operator-dependent methodology could affect the subsequent follow-up phases, due to the lack of result repeatability. In addition, this fully manual procedure is time-consuming, considerably increasing execution times. These critical issues can be addressed only by means of accurate and efficient automated Pattern Recognition ap…