Copyright (c) 2013 John Wiley & Sons, Ltd.”
“Purpose: To assess, in a voxelized anthropomorphic breast phantom, how the conspicuity of breast masses and microcalcifications may be affected by applying reduced breast compression in tomosynthesis.

Materials and Methods: A breast tomosynthesis system was modeled by using a Monte Carlo program and a voxelized anthropomorphic breast phantom. The

Monte Carlo program created simulated tomosynthesis projection images, which were reconstructed by using filtered back-projection software. Reconstructed images were analyzed for mass and microcalcification LDK378 clinical trial conspicuity, or the ratio of the lesion contrast to the anatomic and quantum noise surrounding the lesion. This analysis was performed at two compression

levels (standard and 12.5% reduction) and for two breast compression thicknesses (4 and 6 cm). The change in conspicuity was analyzed for significance by using a bootstrap method and a paired Student t test.

Results: While keeping the glandular radiation dose constant with respective standard and reduced compression levels, the mean mass conspicuities were 1.39 +/- 0.15 (standard error of the mean) and 1.46 +/- 0.22 for a 4-cm breast compression phantom and 1.26 +/- 0.15 and 1.22 +/- 0.20 for a 6-cm breast phantom, and the mean microcalcification conspicuities were 16.2 Selleck AC220 +/- 2.87 and 18.6 +/- 2.63 for a 4-cm breast phantom and 11.4 +/- 1.11 and 10.6 +/- 1.18 for a 6-cm breast compression phantom.

Conclusion: For constant

glandular dose, mass and microcalcification conspicuity remained approximately constant with decreased compression. Constant conspicuity implies https://www.selleckchem.com/products/Flavopiridol.html that reduced compression would have a minimal effect on radiologists’ performance, which suggests that there is justification for a measured reduction of breast compression for breast tomosynthesis, increasing the comfort of women undergoing the examination. (C) RSNA, 2009″
“We report the successful use of cardiac resynchronization therapy in an orthotopic heart transplant recipient with late graft dysfunction, severe heart failure, and atrial fibrillation requiring atrioventricular node ablation. This case highlights the potential role for cardiac resynchronization therapy in orthotopic heart transplant recipients with systolic dysfunction and heart failure, especially in the setting of forced right ventricular pacing. Despite potentially different mechanisms of left ventricular dysfunction, biventricular pacing should be considered for allograft recipients with conventional indications for cardiac resynchronization therapy. J Heart Lung Transplant 2010;29:704-6 (C) 2010 International Society for Heart and Lung Transplantation. All rights reserved.”
“The structural, magnetic, and magnetocaloric properties of the manganite La0.7Ca0.3MnO3 have been studied.