Search Results - "Wolf, Patrick D."

Quantifying Myocardial Contractility Changes Using Ultrasound-Based Shear Wave Elastography by Vejdani-Jahromi, Maryam, MD, Freedman, Jenna, BS, Nagle, Matthew, BS, Kim, Young-Joong, BE, Trahey, Gregg E., PhD, Wolf, Patrick D., PhD

“…Background Myocardial contractility, a significant determinant of cardiac function, is valuable for diagnosis and evaluation of treatment in cardiovascular…”
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Intracardiac acoustic radiation force impulse imaging: A novel imaging method for intraprocedural evaluation of radiofrequency ablation lesions by Eyerly, Stephanie A., MS, Bahnson, Tristram D., MD, FHRS, Koontz, Jason I., MD, PhD, Bradway, David P., BS, Dumont, Douglas M., PhD, Trahey, Gregg E., PhD, Wolf, Patrick D., PhD

“…Background Arrhythmia recurrence after cardiac radiofrequency ablation (RFA) for atrial fibrillation has been linked to conduction through discontinuous lesion…”
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A fully implantable 96-channel neural data acquisition system by Rizk, Michael, Bossetti, Chad A, Jochum, Thomas A, Callender, Stephen H, Nicolelis, Miguel A L, Turner, Dennis A, Wolf, Patrick D

“…A fully implantable neural data acquisition system is a key component of a clinically viable brain-machine interface. This type of system must communicate with…”
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Contrast in Intracardiac Acoustic Radiation Force Impulse Images of Radiofrequency Ablation Lesions by Eyerly, Stephanie A., Bahnson, Tristram D., Koontz, Jason I., Bradway, David P., Dumont, Douglas M., Trahey, Gregg E., Wolf, Patrick D.

“…We have previously shown that intracardiac acoustic radiation force impulse (ARFI) imaging visualizes tissue stiffness changes caused by radiofrequency…”
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3-D Ultrasound Imaging Using Helicoid Array Transducers by Kim, Young-Joong, Wolf, Patrick D.

“…Real-time 3-D intracardiac echocardiography (ICE) can enable faster imaging of surfaces orthogonal to the transducer, such as the pulmonary vein (PV) antra and…”
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A low power multichannel analog front end for portable neural signal recordings by Obeid, Iyad, Nicolelis, Miguel A.L, Wolf, Patrick D

“…We present the design and testing of a 16-channel analog amplifier for processing neural signals. Each channel has the following features: (1) variable gain…”
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Ultrasound Shear Wave Elasticity Imaging Quantifies Coronary Perfusion Pressure Effect on Cardiac Compliance by Vejdani-Jahromi, Maryam, Nagle, Matt, Trahey, Gregg E., Wolf, Patrick D.

“…Diastolic heart failure (DHF) is a major source of cardiac related morbidity and mortality in the world today. A major contributor to, or indicator of DHF is a…”
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Measuring Intraventricular Pressure Using Ultrasound Elastography by Vejdani‐Jahromi, Maryam, Freedman, Jenna, Trahey, Gregg E., Wolf, Patrick D.

“…Objectives Intraventricular pressure (IVP) is one of the most important measurements for evaluating cardiac function, but this measurement is not currently…”
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Intracardiac Echocardiography Measurement of Dynamic Myocardial Stiffness with Shear Wave Velocimetry by Hollender, Peter J, Wolf, Patrick D, Goswami, Robi, Trahey, Gregg E

“…Abstract Acoustic radiation force (ARF)–based methods have been demonstrated to be a viable tool for noninvasively estimating tissue elastic properties, and…”
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Assessment of Diastolic Function Using Ultrasound Elastography by Vejdani-Jahromi, Maryam, Freedman, Jenna, Kim, Young-Joong, Trahey, Gregg E., Wolf, Patrick D.

“…Shear wave elasticity imaging (SWEI) is a novel ultrasound elastography technique for assessing tissue stiffness. In this study, we investigate the potential…”
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Evaluation of spike-detection algorithms for a brain-machine interface application by Obeid, Iyad, Wolf, Patrick D

“…Real time spike detection is an important requirement for developing brain machine interfaces (BMIs). We examined three classes of spike-detection algorithms…”
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A Comparison of Acoustic Radiation Force-Derived Indices of Cardiac Function in the Langendorff Perfused Rabbit Heart by Vejdani-Jahromi, Maryam, Nagle, Mathew, Jiang, Yang, Trahey, Gregg E., Wolf, Patrick D.

“…In the past decade, there has been an increased interest in characterizing cardiac tissue mechanics utilizing newly developed ultrasound-based elastography…”
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The Evolution of Tissue Stiffness at Radiofrequency Ablation Sites During Lesion Formation and in the Peri-Ablation Period by EYERLY, STEPHANIE A., VEJDANI-JAHROMI, MARYAM, DUMONT, DOUGLAS M., TRAHEY, GREGG E., WOLF, PATRICK D.

“…Peri‐Ablation Monitoring of RFA Lesion Stiffness Introduction Elastography imaging can provide radiofrequency ablation (RFA) lesion assessment due to tissue…”
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Excitation properties of the right cervical vagus nerve in adult dogs by Castoro, Mark A., Yoo, Paul B., Hincapie, Juan G., Hamann, Jason J., Ruble, Stephen B., Wolf, Patrick D., Grill, Warren M.

“…Vagus nerve stimulation (VNS) is an approved treatment for epilepsy and depression, and it is currently under investigation for applications in Alzheimer's…”
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In Vivo Assessment of Myocardial Stiffness with Acoustic Radiation Force Impulse Imaging by Hsu, Stephen J, Bouchard, Richard R, Dumont, Douglas M, Wolf, Patrick D, Trahey, Gregg E

“…Abstract Acoustic radiation force impulse (ARFI) imaging has been demonstrated to be capable of visualizing variations in local stiffness within soft tissue…”
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Optimizing the automatic selection of spike detection thresholds using a multiple of the noise level by Rizk, Michael, Wolf, Patrick D

“…Thresholding is an often-used method of spike detection for implantable neural signal processors due to its computational simplicity. A means for automatically…”
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Feasibility of Near Real-Time Lesion Assessment During Radiofrequency Catheter Ablation in Humans Using Acoustic Radiation Force Impulse Imaging by BAHNSON, TRISTRAM D., EYERLY, STEPHANIE A., HOLLENDER, PETER J., DOHERTY, JOSHUA R., KIM, YOUNG-JOONG, TRAHEY, GREGG E., WOLF, PATRICK D.

“…First‐in‐Human ARFI Images of RF Ablation Lesions Background Visual confirmation of radiofrequency ablation (RFA) lesions during clinical cardiac ablation…”
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An In Vitro Assessment of Acoustic Radiation Force Impulse Imaging for Visualizing Cardiac Radiofrequency Ablation Lesions by EYERLY, STEPHANIE A., HSU, STEPHEN J., AGASHE, SHRUTI H., TRAHEY, GREGG E., LI, YANG, WOLF, PATRICK D.

“…Ablation Lesion Quantification with ARFI Imaging. Introduction: Lesion placement and transmurality are critical factors in the success of cardiac transcatheter…”
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A single-chip signal processing and telemetry engine for an implantable 96-channel neural data acquisition system by Rizk, Michael, Obeid, Iyad, Callender, Stephen H, Wolf, Patrick D

“…A fully implantable neural data acquisition system is a key component of a clinically viable cortical brain-machine interface. We present the design and…”
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In Vivo Cardiac, Acoustic-Radiation-Force-Driven, Shear Wave Velocimetry by Bouchard, Richard R., Hsu, Stephen J., Wolf, Patrick D., Trahey, Gregg E.

“…Shear wave elasticity imaging (SWEI) was employed to track acoustic radiation force impulse (ARFI)-induced shear waves in the mid-myocardium of the left…”
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