IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL A PUBLICATION OF THE IEEE ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL SOCIETY FEBRUARY 2015 VOLUME 62 NUMBER 2 ITUCER U (ISSN 0885-3010) Information for Contributors...............................................................................................................................................................243 PAPERS Ferroelectrics Downscaling at Submicrometer Scale of the Gap Width of Interdigitated Ba0.5Sr0.5TiO3 Capacitors.............................................. ..............................................................................A. Khalfallaoui, L. Burgnies, K. Blary, G. Vélu, D. Lippens, and J.-C. Carru247 Frequency Control Accuracy Validation of T2L2 Time Transfer in Co-Location............................................................................................................. .............................. M. Laas-Bourez, C. Courde, E. Samain, P. Exertier, P. Guillemot, J.-M. Torre, N. Martin, and C. Foussard255 Medical Ultrasound An Ultrasound Tomography System With Polyvinyl Alcohol (PVA) Moldings for Coupling: In Vivo Results for 3-D Pulse–Echo Imaging of the Female Breast...................................................................................A. Koch, F. Stiller, R. Lerch, and H. Ermert266 Analysis of Rapid Multi-Focal-Zone ARFI Imaging..............................................S. Rosenzweig, M. Palmeri, and K. Nightingale280 Two-Dimensional Shear-Wave Elastography on Conventional Ultrasound Scanners With Time-Aligned Sequential Tracking (TAST) and Comb-Push Ultrasound Shear Elastography (CUSE).......P. Song, M. C. Macdonald, R. H. Behler, J. D. Lanning, ..............................M. H. Wang, M. W. Urban, A. Manduca, H. Zhao, M. R. Callstrom, A. Alizad, J. F. Greenleaf, and S. Chen 290 Structure Function for High-Concentration Biophantoms of Polydisperse Scatterer Sizes............. A. Han, and W. D. O’Brien, Jr.303 Real-Time Integrated Photoacoustic and Ultrasound (PAUS) Imaging System to Guide Interventional Procedures: Ex Vivo Study .................................................. C.-W. Wei, T.-M. Nguyen, J. Xia, B. Arnal, E. Y. Wong, I. M. Pelivanov, and M. O’Donnell 319 Ultrasound-Induced Heart Rate Decrease: Role of the Vagus Nerve............... O. C. Coiado, E. B. Buiochi, and W. D. O’Brien Jr. 329 Intracardiac Myocardial Elastography in Canines and Humans In Vivo............................................................................................ ................................................................................................J. Grondin, E. Wan, A. Gambhir, H. Garan, and E. E. Konofagou337 Ultrasound Field Measurement Using a Binary Lens.................................................G. T. Clement, H. Nomura, and T. Kamakura350 Sensors, NDE, and Industrial Applications Porous Ceramics as Backing Element for High-Temperature Transducers...................... M. H. Amini, T. W. Coyle, and T. Sinclair360 Cluster-Enhanced Sparse Approximation of Overlapping Ultrasonic Echoes.........................E. Mor, M. Aladjem, and A. Azoulay373 Transducers and Transducer Materials Effect of Pre-Deposition RF Plasma Etching on Wafer Surface Morphology and Crystal Orientation of Piezoelectric AlN Thin Films................................................................................................................. V. V. Felmetsger, M. K. Mikhov, and P. N. Laptev387 CORRESPONDENCE 3-D Ultrasonic Strain Imaging Based on a Linear Scanning System......................................Q. Huang, B. Xie, P. Ye, and Z. Chen392 DOI http://dx.doi.org/10.1109/TUFFC.2015.620203