Gangliogliomas are rare, typically benign low grade tumors which usually occur in the supratentorial compartment, more commonly in the pediatric age group. Malignant transformation of a low grade ganglioglioma in the absence of prior radiation therapy is exceptionally rare with only 17 such cases previously reported. The author present an additional case of malignant transformation of recurrent ganglioglioma.
View Article and Find Full Text PDFTo consider microalgae lipid biofuel as a viable energy source, it is a necessity to maximize algal cell lysis, lipid harvest, and thus biofuel production versus the energy used to lyse the cells. Previous techniques have been to use energy consumptive ultrasound waves in the 10-40 kHz range in a stationary exposure environment. This study evaluated the potential of using 1.
View Article and Find Full Text PDFUltrasound Med Biol
November 2012
Therapeutic applications with high-intensity focused ultrasound (HIFU) fall into two classifications-one using thermal effect for coagulation or ablation while generally avoiding cavitation and the other using cavitation-mediated mechanical effects while suppressing heating. Representative of the latter, histotripsy uses HIFU at low duty factor to create energetic bubble clouds inside tissue to liquefy a region and has the advantages in real-time monitoring and lesion fidelity to treatment planning. We explored the impact of a preconditioning/heating pulse on histotripsy lesion formation in porcine muscle samples.
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