Abstract. Studies have been carried out to assess the effectiveness of dry processing by current preparations from heat-resistant alloy CN45MVTUBR with mineral ceramic incisors introduction ultrasound-field energy treatment zone. It has established that use ULTRASOUND in rough tools without coolant allows reduce depth defective layer 1.5 times.

Pulmonary vein isolation (PVI) using radiofrequency current (RFC) ablation is a potentially curative treatment option for patients with atrial fibrillation (AF). The shortcomings of the RFC technology (technically challenging, long procedure times, complications) steadily kindle the interest in new energy sources and catheter designs. High intensity focused ultrasound (HIFU) has the ability to ...

BACKGROUND To set up an experimental model of cadaveric heart in order to evaluate and compare histologic transmurality of lesions immediately caused by different energy sources of anti-arrhythmic epicardial devices. METHODS Procedures were performed on a cadaveric human heart in orthotopic position with an ischemic time of 48 h at 37° and supported through the use of cardiopulmonary bypass. ...

Methods In contrast to transrectal approaches, transurethral ultrasound applicators are simple in construction and designed for single use. Delivery of ultrasound from within the prostate gland avoids passing energy through sensitive structures, and enables rapid tissue ablation. Tissue is coagulated radially outwards from the urethra, with the depth of treatment controlled based on the tempera...

We read with interest the recent article by Wang et al, reporting the clinical application of SF1 (Sonoflora 1)—a sensitizer that can be activated by light and ultrasound. SF1 is an analog of chlorophyll in that its macrocycle backbone is porphyrin-based and the center of the porphyrin ring consists of a metal ion. The chlorophyll derivative has light absorption peaks at 402 and 636 nm. A very ...

ii I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. Abstract Prostate segmentation is a required step in determining the volume of a prostate, which is very important in the diagnosis and the treatment o...

Application of low-frequency ultrasound for clot disruption has been suggested as a potential therapy to enhance thrombus dissolution, but the optimal mode for delivery of ultrasound with clot-disruptive properties has not yet been extensively explored. Target-specific effects are desirable and may be accomplished by focusing the ultrasound. Adequate focusing, however, requires a short waveleng...