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Embolization was used to reduce the size of brain arteriovenous malformations (AVMs) prior to radiosurgical treatment in 125 patients who were poor surgical candidates or had refused surgery. Of these patients, 81% had suffered hemorrhage, and 22.4% had undergone treatment at another institution. According to the Spetzler-Martin scale, the AVMs were Grade(More)
PURPOSE To compare the effects on the myometrium of polyvinyl alcohol (PVA) particles and calibrated microspheres (MS) in embolization of the uterine arteries in sheep. MATERIALS AND METHODS Superselective and bilateral embolization of the uterine arteries was performed with PVA particles and calibrated MS within 24 hours after artificial ovulation in 26(More)
PURPOSE To evaluate (i). the presence and number of calibrated tris-acryl gelatin microspheres (TGMS) in targeted organs after embolization of tumors or arteriovenous malformations (AVMs) and (ii). the possible correlations among the size of TGMS used for embolization, the size of TGMS found in specimens, and the size of the occluded vessels. MATERIALS(More)
AIM To compare the cytotoxic effects of 11 anticancer agents against VX2 and HepG2 cells in order to establish candidate drugs that can be tested preclinically on VX2 tumor model for transarterial chemoembolization (TACE) of hepatocellular carcinoma (HCC). MATERIALS AND METHODS VX2 and HepG2 cells were incubated with different drug concentrations. The(More)
The purpose of this study was to compare, after embolization, the distribution in the uterine arterial vasculature of tris-acryl gelatin microspheres (TGMS) and polyvinyl alcohol microspheres (PVAMS). A limited bilateral uterine artery embolization was performed in six adult sheep under fluoroscopic control by injecting in each uterine artery 0.25 ml of(More)
Dynamic Voltage and Frequency Scaling (DVFS) has appeared as one of the most important techniques to reduce energy consumption in computing systems. The main idea exploited by DVFS controllers is to reduce the CPU frequency in memory-bound phases, usually significantly reducing the energy consumption. However, depending on the CPU model, transitions between(More)
PURPOSE To evaluate the midterm results of limited embolization of the uterine arteries in the management of symptomatic uterine fibroids and to evaluate the efficacy and safety of limited uterine artery embolization (UAE) with use of calibrated tris-acryl gelatin microspheres in the management of symptomatic uterine fibroids. MATERIALS AND METHODS Twenty(More)
PURPOSE To evaluate an embolic agent that is precisely calibrated, perfectly spherical in shape, and soft but nonresorbable for use in the embolization of vascular disease of the head, neck, and spine in humans. METHODS We used supple, hydrophilic, and calibrated trisacryl gelatin microspheres 200, 400, 600, 800 and 1000 microns in diameter for(More)
PURPOSE To develop a precisely calibrated, perfectly spherical, stainable, soft, and implantable but nonresorbable particulate embolization material. METHODS Calibrated particles with a trisacryl gelatin polymer core and hydrophilic surface characteristics were obtained by reversed emulsion synthesis followed by application of a wet-sieving technique.(More)