Results: MR imaging measurements permitted immediate depiction of IRE ablation zones that were hypointense on T1-weighted images and hyperintense on T2-weighted images. MR imaging-based measurements demonstrated excellent consistency with FEM-anticipated ablation

zones (r. 0.90 and P < .001 for both T1- and T2-weighted images). MR imaging measurements were also highly correlated with histologically confirmed ablation zone measurements (r. 0.90 and P < .001 for both T1- and T2-weighted images).

Conclusion: MR imaging permits immediate depiction of ablated tissue zones for monitoring of IRE ablation procedures. www.selleckchem.com/products/ferrostatin-1-fer-1.html These measurements could potentially be used during treatment to elicit repeat application of IRE pulses or adjustments to electrode positions to ensure complete treatment of targeted lesions. (C) RSNA, 2010″
“The structure, dc magnetization and ac susceptibility characteristics of the rare-earth

(R = La,Dy) ion substituted cobalt-ferrites (CoO center dot Fe(1.925)La(0.075)O(3) and CoO center dot Fe(1.925)Dy(0.075)O(3)) are evaluated. R-substituted Co-ferrites crystallize in the cubic inverse spinel phase. The irreversible temperature (T(irr)) between zero field cooled (ZFC) and field cooled (FC) magnetization for CoO. Fe(1.925)La(0.075)O(3) and CoO center dot Fe(1.925)Dy(0.075)O(3) determined from the temperature variation of magnetization measurements are 283 and 292 K, respectively. selleckchem The broadening of ZFC magnetization and more than one maximum indicates the coexistence of short-range ferrimagnetic clusters of different size with a long-range ferrimagnetic phase. Magnetization curves indicate no saturation up to 30 kOe suggesting the canted spin structure inside the clusters. The relaxation times of spin clusters calculated using the Vogel Fulcher law for the frequency-dependent ac susceptibility measurements are on the order of similar to 10(-6) s. (C) 2011 American

Institute of Physics. [doi: 10.1063/1.3562201]“
“The effect of the holding temperature and time find more in the melt state of poly(L-lactide) (PLLA) samples on the nonisothermal melt crystallization process and on the structure have been investigated by means of DSC, polarized optical microscopy and wide angle X-ray scattering. As standard starting material, single crystals grown from dilute solution were used. In the mild melting condition, the survived athermal nuclei favor high temperature polymer crystallization, while the more severe treatment leads the PLLA to crystallize at higher supercooling with a sporadic nucleation. At the intermediate melting temperature a distinct double nucleation mechanism was observed while at the lower nuclei concentration, a double crystallization rate was also found. (C) 2011 Wiley Periodicals, Inc.