Transmission-Based Monitoring of Dual-Applicator Microwave Ablation Discriminates Discontiguous from Contiguous Ablation Zones in an In Vivo Porcine Liver Model.

Purpose: To determine the technical feasibility of discriminating discontiguous from contiguous ablation zones between a pair of microwave ablation (MWA) applicators using broadband microwave transmission signal measurements in an in vivo porcine liver model.

Methods: Dual applicator 2.45GHz MWA was performed using one directional and one omnidirectional applicator, spaced 3cm apart, under imaging guidance.

Image-Guided Percutaneous Robotic Interventions for Lung.

Interventional radiology (IR) has aided advances in the diagnosis and treatment of lung pathologies through procedures such as percutaneous biopsy, tumor ablation and drainage of intra-thoracic collections. The success and safety of these interventions largely depend on timely and accurate needle/device placement. Additionally, there is an inherent need to minimize radiation exposure during image-guided procedures.

Benign Soft Tissue Lesions Responsible for Pain: When and How Should the IR Intervene.

In most of the cases Interventional Radiology techniques and therapies are proposed for the management of symptomatic soft tissue benign tumors responsible for pain and/or compression symptoms aiming to offer a curative intent by means of tumor necrosis with subsequent symptoms' management and improvement of life quality. The ablative therapies include chemical, thermal and non-thermal approaches while, trans-arterial (chemo)embolization also has a distinct role. Adjunct ancillary techniques should be performed whenever necessary to increase efficacy and safety and avoid or reduce complications.

Impact of Power and Time in Hepatic Microwave Ablation: Effect of Different Energy Delivery Schemes.

Microwave ablation often involves the use of continuous energy-delivery protocols with a fixed power and time. To achieve larger ablation zones, a range of protocols and power levels have been studied in experimental studies. The objective of the present study was to develop and experimentally evaluate the performance of a coupled computational electromagnetic-bioheat transfer model of 2.