Endourethral MRI Guidance for Prostatic RF Ablation

2003 ◽  
Author(s):  
Ergin Atalar
Keyword(s):  
Rf Ablation ◽  
Mri Guidance

The Determinants of Successful RF Ablation - Is Measurement of Tissue Contact the Next Step?

2013 ◽  
Vol 8 (2) ◽  
pp. 151-161 ◽  
Author(s):  
Michael Jones ◽  
Kelvin Wong ◽  
Yaver Bashir ◽  
Timothy Betts ◽  
Kim Rajappan
Keyword(s):  
Rf Ablation

scholarly journals Into a Fluoroless Future: an Appraisal of Fluoroscopy-Free Techniques in Clinical Cardiac Electrophysiology

2021 ◽  
Vol 23 (4) ◽  
Author(s):  
Christopher S. Purtell ◽  
Ryan T. Kipp ◽  
Lee L. Eckhardt
Keyword(s):  
Cardiac Electrophysiology ◽  
Imaging Technique ◽  
Early Experience ◽  
Intracardiac Echocardiography ◽  
Electroanatomic Mapping ◽  
Supporting Evidence ◽  
Device Implantation ◽  
Mri Guidance ◽  
Fluoroscopic Imaging ◽  
Mapping Systems

Abstract Purpose of Review There are risks to both patients and electrophysiology providers from radiation exposure from fluoroscopic imaging, and there is increased interest in fluoroscopic reduction. We review the imaging tools, their applications, and current uses to eliminate fluoroscopy. Recent Findings Multiple recent studies provide supporting evidence for the transition to fluoroscopy-free techniques for both ablations and device implantation. The most frequently used alternative imaging approaches include intracardiac echocardiography, cardiac MRI guidance, and 3D electroanatomic mapping systems. Electroanatomic mapping and intracardiac echocardiography originally used to augment fluoroscopy imaging are now replacing the older imaging technique. The data supports that the future of electrophysiology can be fluoroscopy-free or very low fluoroscopy for the vast majority of cases. Summary As provider and institution experience grows with these techniques, many EP labs may choose to completely forego the use of fluoroscopy. Trainees will benefit from early experience with these techniques.

Enhancement of RF Ablation by Combined Use of Ultra-Low Temperature Fluid Cooling and Magnetic Nanoparticles

2010 ◽  
Author(s):  
Zhong-Shan Deng ◽  
Jing Liu
Keyword(s):  
Magnetic Nanoparticles ◽  
Low Temperature ◽  
Bioheat Transfer ◽  
Rf Ablation ◽  
High Electrical Conductivity ◽  
Thermal Coagulation ◽  
Cooling Method ◽  
Tumor Tissues ◽  
Combined Use ◽  
Fluid Cooling

Magnetic nanoparticles with high electrical conductivity have been proved to be effective in enhancing the efficacy of RF ablation. However, the possible carbonization of tissues is an unfavorable factor in achieving greater dimensions of necrosis, because carbonized tissue is a poor conductor, increases impedance and limits propagation area of RF energy. To prevent potential carbonization of tissues surrounding to the heating part of RF electrodes during RF ablation, a new method using ultra-low temperature fluid was proposed for cooling RF electrodes and tissues in the vicinity of RF electrodes in this study. To test its feasibility, the corresponding bioheat transfer process during RF ablation simultaneously applying this cooling method and magnetic nanoparticles was studied through numerical simulations. The results indicate that the cooling method by ultra-low temperature fluid can prevent carbonization of tissues resulted by local high temperature, significantly enlarge the effective heating area and thus actualize highly efficient thermal coagulation to tumor tissues during RF ablation with adjuvant use of magnetic nanoparticles.

scholarly journals Radiofrequency ablation of lymphoma

Blood ◽  
2006 ◽  
Vol 107 (4) ◽  
pp. 1624-1626 ◽  
Author(s):  
Deepak Sudheendra ◽  
Mara M. Barth ◽  
Upendra Hegde ◽  
Wyndham H. Wilson ◽  
Bradford J. Wood
Keyword(s):  
Cell Lymphoma ◽  
Bladder Wall ◽  
B Cell Lymphoma ◽  
Rf Ablation ◽  
Image Guided ◽  
Large B Cell Lymphoma ◽  
Refractory Lymphoma ◽  
The Right ◽  
Posttransplantation Lymphoproliferative Disorder ◽  
Disease Free

Percutaneous minimally invasive radiofrequency (RF) ablation has not been described for lymphoma. This image-guided modality is presented in 3 different settings for the treatment of refractory lymphoma. The first patient received RF ablation for the curative treatment of a solitary residual hepatic mass following rituximab-based chemotherapy for a posttransplantation lymphoproliferative disorder (PTLD) and is disease-free 4 years later. The second patient received RF ablation for successful palliation of progressive follicular lymphoma adjacent to the bladder wall following chemotherapy and maximum radiation. The third patient received RF ablation for prevention of airway obstruction from progressive diffuse large B-cell lymphoma of the right neck following chemotherapy and maximum radiation. RF ablation may be clinically beneficial and should be considered for the treatment of local lymphoma that is refractory or not amenable to standard approaches.

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