Research Topics
| JAMES FOWLER GREENLEAFSummaryAffiliation: Mayo Clinic Country: USA Publications
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Publications
Selected methods for imaging elastic properties of biological tissuesJames F Greenleaf
Basic Ultrasound Research Laboratory, Department of Physiology and Biophysics, Mayo Clinic Rochester, Rochester, Minnesota 55905, USA
Annu Rev Biomed Eng 5:57-78. 2003..Nevertheless, such estimates may add a great deal of information not currently available to the current field of medical imaging...
Measurement of tissue mechanical properties with shear wave dispersion ultrasound vibrometry (SDUV)James F Greenleaf
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905 USA
Conf Proc IEEE Eng Med Biol Soc 2009:4411-4. 2009..An example application of the method is described to measure material properties in bovine tissue...- Shearwave dispersion ultrasound vibrometry applied to in vivo myocardiumCristina Pislaru
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Conf Proc IEEE Eng Med Biol Soc 2009:2891-4. 2009..The method was applied to estimate viscoelastic properties of the myocardium during diastole and systole... - Ex Vivo measurements of myocardial viscoelasticity using Shearwave Dispersion Ultrasound Vibrometry (SDUV)Ivan Nenadic
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA nenadic ivan mayo edu
Conf Proc IEEE Eng Med Biol Soc 2009:2895-8. 2009..An anti-symmetric Lamb wave model was fit to the shear wave dispersion curves in four orthogonal directions to obtain elastic and viscous moduli... - Quantifying elasticity and viscosity from measurement of shear wave speed dispersionShigao Chen
Basic Ultrasound Research Laboratory, Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Acoust Soc Am 115:2781-5. 2004..Experiments in gelatin phantoms show promising results validated by an independent method. Practical considerations and challenges in possible medical applications are discussed... 
Shearwave dispersion ultrasound vibrometry (SDUV) for measuring tissue elasticity and viscosityShigao Chen
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN, USA
IEEE Trans Ultrason Ferroelectr Freq Control 56:55-62. 2009..Feasibility of this pulse sequence is demonstrated by in vivo SDUV measurements in swine liver using a dual transducer prototype simulating the operation of a single array transducer...- Characterization of reperfused infarcted myocardium from high-frequency intracardiac ultrasound imaging using homodyned K distributionXiaohui Hao
Department of Physiology and Biophysics, Mayo Foundation, Rochester, MN 55905, USA
IEEE Trans Ultrason Ferroelectr Freq Control 49:1530-42. 2002..We conclude that the homodyned K distribution may characterize normal and reperfused infarcted myocardium using high-frequency intracardiac ultrasound images... - Measuring the phase of vibration of spheres in a viscoelastic medium as an image contrast modalityMatthew W Urban
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905, USA
J Acoust Soc Am 118:3465-72. 2005..With phase measurements and images, it is demonstrated that predictable image contrast exists for spheres of different density embedded in a viscoelastic medium... - Imaging mass lesions by vibro-acoustography: modeling and experimentsAzra Alizad
Department of Physiology and Biomedical Engineering, Ultrasound Research Laboratory, Rochester, MN 55905, USA
IEEE Trans Med Imaging 23:1087-93. 2004..Resulting images show lesions with enhanced boundary and often with distinctive textures relative to their background. The results suggest that vibro-acoustography maybe a clinically useful imaging modality for detection of mass lesions... - Noninvasive measurement of aortic aneurysm sac tension with vibrometryGeza Mozes
Division of Vascular Surgery, Mayo Clinic, Mayo Medical School, Rochester, MN 55905, USA
J Vasc Surg 42:963-71. 2005..We tested this concept in an in vitro model and found that application of vibrometry for noninvasive measurement of aortic aneurysm sac tension is feasible. Vibrometry may also be used to estimate wall stress in native aneurysms... - Harmonic pulsed excitation and motion detection of a vibrating reflective targetMatthew W Urban
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905, USA
J Acoust Soc Am 123:519-33. 2008..The parameterized numerical and experimental analyses provide insight into how to optimize acquisition parameters to minimize measurement errors... - Harmonic vibro-acoustographyShigao Chen
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
IEEE Trans Ultrason Ferroelectr Freq Control 54:1346-51. 2007..Applications of this technique include imaging the nonlinearity of the object and selective detection of microbubbles for perfusion imaging. The impact of microbubble destruction during the imaging process also is discussed... - Vibration mode imagingXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
IEEE Trans Med Imaging 26:843-52. 2007..However, the image of the artery can be improved if the vibration of the artery is measured directly. Imaging of the structure in the gelatin or tissue can be enhanced by small bubbles and contrast agents... - Phase aberration correction using ultrasound radiation force and vibrometry optimizationMatthew W Urban
Ultrasound Research Laboratory, Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street, Rochester, MN 55905, USA
IEEE Trans Ultrason Ferroelectr Freq Control 54:1142-53. 2007..By maximizing the radiation force-induced vibration of scatterers in the focal region, the resolution of the ultrasound beam can be recovered after aberration defocusing... - Prostate cryotherapy monitoring using vibroacoustography: preliminary results of an ex vivo study and technical feasibilityFarid G Mitri
Department of Physiology and Biomedical Engineering, Ultrasound Research Laboratory, Mayo Clinic, Rochester, MN 55905, USA
IEEE Trans Biomed Eng 55:2584-92. 2008..These results provide substantial motivation to further investigate VA as a potential modality to monitor prostate cryotherapy intraoperatively... - Liver elasticity and viscosity quantification using shearwave dispersion ultrasound vibrometry (SDUV)Shigao Chen
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Conf Proc IEEE Eng Med Biol Soc 2009:2252-5. 2009..Feasibility of this pulse sequence is demonstrated by in vivo SDUV measurements in porcine liver using a dual transducer prototype... - Measurement of wave velocity in arterial walls with ultrasound transducersXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Ultrasound Med Biol 32:1655-60. 2006..Local wave velocity more than a few millimeters can be measured, which is not possible with the PWV method... - Multifrequency vibro-acoustographyMatthew W Urban
Ultrasound Research Laboratory, Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
IEEE Trans Med Imaging 25:1284-95. 2006..This method holds the potential for a large gain of information with no increase in scanning time compared to conventional vibro-acoustography systems... - Difference frequency and its harmonic emitted by microbubbles under dual frequency excitationShigao Chen
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First St SW, Rochester, MN 55905, USA
Ultrasonics 44:e123-6. 2006..In conclusion, harmonic acoustic emission is present for microbubbles. It is very sensitive to the size of the bubble and may be used for selective detection of microbubbles... - Estimation of tissue's elasticity with surface wave speedXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905, USA
J Acoust Soc Am 122:2522-5. 2007..The surface wave fields are measured with a laser vibrometer. It shows that the surface wave speed can be used for inversely estimating tissue's elastic properties based on tissue's surface measurement... - In vivo vibroacoustography of large peripheral arteriesCristina Pislaru
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
Invest Radiol 43:243-52. 2008..This study tested the feasibility of using vibroacoustography to distinguish between normal and calcified femoral arteries in a pig model... - Thermal safety of vibro-acoustography using a confocal transducerShigao Chen
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Ultrasound Med Biol 36:343-9. 2010..05 degrees C for all three attenuation coefficients evaluated: 0.3, 0.5 and 0.7 dB/cm/MHz. Transducer self-heating during a single VA scan measured by a thermocouple is less than 0.27 degrees C... - Evaluation of biaxial mechanical properties of soft tubes and arteries using sonometryMiguel Bernal
Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Conf Proc IEEE Eng Med Biol Soc 2009:2835-8. 2009..The technique we propose has a potential for the non destructive study of soft material cylindrical shapes and can be use to study the mechanical properties of vessels... - Modulation of ultrasound to produce multifrequency radiation forceMatthew W Urban
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, Minnesota 55905, USA
J Acoust Soc Am 127:1228-38. 2010..Modulating ultrasound is a very flexible technique to produce radiation force with multiple frequency components that can be used for various applications... - Error in estimates of tissue material properties from shear wave dispersion ultrasound vibrometryMatthew W Urban
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN, USA
IEEE Trans Ultrason Ferroelectr Freq Control 56:748-58. 2009..5 microm. The model provides a basis to explore different parameters related to implementation of the SDUV method. The experiment confirmed conclusions made by the model, and the results can be used for optimization of SDUV... - Optimization of ultrasound radiation force source for shear wave dispersion measurementsMatthew W Urban
Dept of Physio and Biomedical Eng, Mayo Clinic College of Medicine, 200 First St SW, Rochester, MN 55905
J Acoust Soc Am 125:2552. 2009..This work was supported in part by Grant EB002167 from NIH.]... - Quantitative assessment of scleroderma by surface wave techniqueXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
Med Eng Phys 33:31-7. 2011..Statistical analyses suggest that there are significant differences of viscoelasticity between scleroderma patients and healthy subjects. Scleroderma can be effectively and quantitatively evaluated based on human skin viscoelasticity... - Lamb wave Shearwave dispersion ultrasound Vibrometry (SDUV) validation studyIvan Nenadic
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Conf Proc IEEE Eng Med Biol Soc 2010:45-8. 2010..Elasticity and viscosity of urethane and gelatin obtained using the Lamb wave SDUV and embedded sphere methods agree within one standard deviation... - Modal analysis of ultrasound radiation force generated shear waves on arteriesMiguel Bernal
Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Conf Proc IEEE Eng Med Biol Soc 2010:2585-8. 2010..This work shows the feasibility of our method for the study and characterization of propagating modes in the arterial wall. Future studies include developing a Lamb wave model for cylindrical viscoelastic structures to fit our data... - Image features in medical vibro-acoustography: in vitro and in vivo resultsAzra Alizad
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 1st Street SW, Rochester, MN 55905, USA
Ultrasonics 48:559-62. 2008..It is concluded that vibro-acoustography offers features that may be valuable for diagnostic purposes... - Air-coupled ultrasound stimulated optical vibrometry for resonance analysis of rubber tubesXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55095, USA
Ultrasonics 49:26-30. 2009..It may also be helpful to better understand the coupling effects of the surrounding tissue and interior blood on the vessel wall by measuring the resonance of the vessel in vitro and in vivo... - Estimation of complex arterial elastic modulus from ring resonance excited by ultrasound radiation forceXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
Ultrasonics 44:e169-72. 2006..Experiments were carried out on a porcine artery embedded in gelatin. The estimation only requires the diameter of the artery, but does not need the thickness of the artery which is difficult to measure with accuracy and precision... - Generation of a torsion wave and measuring its propagation velocity in the circumferential direction of arterial wallXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
Ultrasonics 44:e165-8. 2006..The elastic modulus of the artery can be calculated from the torsion wave velocity without the knowledge of the thickness of the artery, which is difficult to measure with accuracy... - Critical issues in breast imaging by vibro-acoustographyAzra Alizad
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200, 1st St SW Rochester, MN 55905, USA
Ultrasonics 44:e217-20. 2006.... - Ultrasound strain imaging of altered myocardial stiffness: stunned versus infarcted reperfused myocardiumCristina Pislaru
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Ultrasound Research Lab, 200 First St SW, Rochester, Minn 55905, USA
Circulation 109:2905-10. 2004..In this study we evaluate the diastolic deformation of ischemic/reperfused myocardium and relate this deformation to tissue elastic properties... - Linear arrays for vibro-acoustography: a numerical simulation studyGlauber T Silva
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 1st St. SW, Rochester, MN 55905, USA
Ultrason Imaging 26:1-17. 2004..It is concluded that linear array transducers can produce acceptable spatial resolution for clinical applications... - Comparison of stress field forming methods for vibro-acoustographyShigao Chen
Basic Ultrasound Research Laboratory, Department of Physiology and Biophysics, Mayo Clinic, Rochester, MN 55905, USA
IEEE Trans Ultrason Ferroelectr Freq Control 51:313-21. 2004..The measured velocity profiles match the theory. The theory and experimental technique may be useful in future transducer design for vibro-acoustography... - Performance of vibro-acoustography in detecting microcalcifications in excised human breast tissue: a study of 74 tissue samplesAzra Alizad
Department of Physiology and Biomedical Engineering, Ultrasound Research Laboratory, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
IEEE Trans Med Imaging 23:307-12. 2004..The results indicate that in most cases micro-calcifications can be detected by vibro-acoustography. Further development of vibro-acoustography may lead to a novel-imaging tool for in vivo detection of microcalcifications... - Application of vibro-acoustography for detection of calcified arteries in breast tissueAzra Alizad
Department of Physiology and Biophysics, Ultrasound Research Laboratory, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Ultrasound Med 23:267-73. 2004..In this study, we examined the application of vibro-acoustography in detecting calcified arteries in breast tissue... - Measurement of the ultrasound backscatter signal from three seed types as a function of incidence angle: application to permanent prostate brachytherapyBrian J Davis
Division of Radiation Oncology, Department of Physiology, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA
Int J Radiat Oncol Biol Phys 57:1174-82. 2003..To measure the relative ultrasound backscatter of different seed types as a function of seed orientation and to evaluate the corresponding images of these seeds... - Myocardial contractility by strain echocardiography: comparison with physiological measurements in an in vitro modelTheodore P Abraham
Division of Cardiovascular Diseases, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA
Am J Physiol Heart Circ Physiol 285:H2599-604. 2003..There was no bias with SR measurements during hypoxia or with epsilon measurements. SE closely tracks standard physiological parameters of regional contractile function, such as SV and delta L, under conditions of varying afterload... - Rapid quantitative assessment of myocardial perfusion: spectral analysis of myocardial contrast echocardiographic imagesRichard Y Bae
Division of Cardiovascular Diseases and Internal Medicine and the Department of Physiology and Biophysics, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA
J Am Soc Echocardiogr 15:63-8. 2002.... - Detection of calcium deposits on heart valve leaflets by vibro-acoustography: an in vitro studyAzra Alizad
Basic Ultrasound Research, Department of Physiology and Biophysics, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Am Soc Echocardiogr 15:1391-5. 2002..The method is tested on excised human heart valve tissues. Resulting images clearly show calcium deposits with high contrast and are in agreement with the corresponding radiographs of the specimens... - Higher myocardial strain rates during isovolumic relaxation phase than during ejection characterize acutely ischemic myocardiumCristina Pislaru
Department of Physiology and Biophysics, Rochester, Minnesota, USA
J Am Coll Cardiol 40:1487-94. 2002..The aim of this study was to define an index that can differentiate normal from ischemic myocardial segments that exhibit postsystolic shortening (PSS)... - Remote measurement of material properties from radiation force induced vibration of an embedded sphereShigao Chen
Department of Physiology and Biophysics, Mayo Clinic, Rochester, Minnesota 55905, USA
J Acoust Soc Am 112:884-9. 2002..These experimental results are used to verify the model. This method can be used to estimate the material properties of the medium (e.g., shear modulus) surrounding the sphere... - Distinctive changes in end-diastolic wall thickness and postsystolic thickening in viable and infarcted myocardiumCristina Pislaru
Mayo Clinic College of Medicine, Ultrasound Research Laboratory, Rochester, MN 55905, USA
J Am Soc Echocardiogr 17:855-62. 2004.... - Vibro-acoustic tissue mammographyMostafa Fatemi
Basic Ultrasound Research Laboratory, Department of Physiology and Biophysics, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA
IEEE Trans Med Imaging 21:1-8. 2002..Resulting vibro-acoustographic images show microcalcifications with high contrast with respect to the background soft tissue. Structures such as dense sclerotic tissue do not seem to interfere with detection of microcalcifications... - Measurement of dynamic and static radiation force on a sphereShigao Chen
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
Phys Rev E Stat Nonlin Soft Matter Phys 71:056618. 2005..T. Silva, Phys. Rev. E 71, 056617 (2005)]... - Vibrational characteristics of bone fracture and fracture repair: application to excised rat femurAzra Alizad
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
J Biomech Eng 128:300-8. 2006..This change in mechanical properties of a bone should result in a change of the resonant frequencies of that bone. A vibrational method for bone evaluation has been introduced... - Noninvasive method for estimation of complex elastic modulus of arterial vesselsXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
IEEE Trans Ultrason Ferroelectr Freq Control 52:642-52. 2005..The measured wave velocity is about 3 m/s at 100 Hz and 6.5 m/s at 500 Hz. The real part of complex elastic modulus of the artery is estimated to be 300 kPa... - Noninvasive generation and measurement of propagating waves in arterial wallsXiaoming Zhang
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW Rochester, Minnesota 55905, USA
J Acoust Soc Am 119:1238-43. 2006.... - Characteristics of the audio sound generated by ultrasound imaging systemsMostafa Fatemi
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Acoust Soc Am 117:1448-55. 2005..These findings suggest that fetuses may become exposed to a high-intensity audio sound during maternal ultrasound examinations. Therefore, contrary to common beliefs, ultrasound may not be considered a passive tool in fetal imaging... - Potential applications of vibro-acoustography in breast imagingAzra Alizad
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street, SW, Rochester, MN 55905, USA
Technol Cancer Res Treat 4:151-8. 2005..In addition, we will briefly discuss our recent results of in vivo breast vibro-acoustography. Future developments and potential impact of vibro-acoustography in breast imaging are also discussed... - Evaluating the dynamic performance of a fibre optic pressure microsensorShigao Chen
Department of Physiology and Biomedical Engineering Mayo Clinic College of Medicine, Rochester, MN, USA
Physiol Meas 26:N13-9. 2005..The output of the fibre optic system used shows a constant time delay (0.13 s) for all frequencies tested. Experiments suggest that, with current sensor design, its immersion in degassed water prior to use ensures a reliable performance... - Spectral normalization for ultrasonic contrast microbubble detectionShigao Chen
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
Ultrason Imaging 26:150-62. 2004..A simplified model is used to illustrate the usefulness of these two parameters. Experiments show that both parameters improve detection of microbubbles and that HSFR performs better than HFR... - In vitro renal cortex elasticity and viscosity measurements with Shearwave Dispersion Ultrasound Vibrometry (SDUV) on swine kidneyCarolina Amador
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN, USA
Conf Proc IEEE Eng Med Biol Soc 2009:4428-31. 2009..The purpose of this study was to evaluate the feasibility of SDUV for in vitro measurements of renal cortex elasticity and viscosity in the kidney... - Calcium signaling is required for ultrasound-stimulated aggrecan synthesis by rat chondrocytesJavad Parvizi
Department of Orthopaedics, Mayo Clinic, Rochester, MN 55905, USA
J Orthop Res 20:51-7. 2002..These results imply that ultrasound-stimulated synthesis of cell matrix proteoglycan, associated with accelerated fracture healing, is mediated by intracellular calcium signaling... - Nitric oxide and prostacyclin in ultrasonic vasodilatation of the canine internal mammary arteryAyako Maruo
Division of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota 55905, USA
Ann Thorac Surg 77:126-32. 2004..CONCLUSIONS: Sonication induces vasorelaxation almost completely by time-dependent endothelial nitric oxide and prostacyclin release, which appears unrelated to tissue heating or endothelial architectural disruption... - Stress field forming of sector array transducers for vibro-acoustographyGlauber T Silva
Universidade Federal de Alagoas, Instituto de Computação, Maceio, Alagoas, Brazil
IEEE Trans Ultrason Ferroelectr Freq Control 52:1943-51. 2005..Results show that the measured PSF is in good agreement with the theoretical predications. Vibro-acoustography images of a breast-phantom by both transducers are presented and discussed... - Detection of tissue harmonic motion induced by ultrasonic radiation force using pulse-echo ultrasound and Kalman filterYi Zheng
Saint Cloud State University, St Cloud, MN, USA
IEEE Trans Ultrason Ferroelectr Freq Control 54:290-300. 2007.... - The stiffening of arteries by the tissue-mimicking gelatinXiaoming Zhang
IEEE Trans Ultrason Ferroelectr Freq Control 53:1534-9. 2006..It is found that the tissue-mimicking gelatin significantly stiffens the rubber tube and the artery if they are embedded in gelatin... - Fetal ultrasound: mechanical effectsMelvin E Stratmeyer
Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, US Food and Drug Administration, 9200 Corporate Blvd, HFZ 120, Rockville, MD 20850 USA
J Ultrasound Med 27:597-605; quiz 606-9. 2008..However, low-intensity pulsed ultrasound effects reported in humans and animal models indicate a need for further investigation of potentially adverse developmental effects... - 2003 Achievement Award of the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society. James F. GreenleafJames F Greenleaf
IEEE Trans Ultrason Ferroelectr Freq Control 51:778. 2004
Research Grants
- MULTIDIMENSIONAL HEART IMAGING WITH ULTRASOUNDJames Greenleaf; Fiscal Year: 1993....
- MULTIDIMENSIONAL HEART IMAGING WITH ULTRASOUNDJames Greenleaf; Fiscal Year: 2005..7cc) regions in the myocardium. When VAE, validated in this program, is combined with the ICE catheter in a future clinical instrument, highly localized stress, strain and perfusion could be estimated within the mvocardium. ..
- ARTERIAL PROPERTIES FROM STIMULATED ACOUSTICAL EMISSIONJames Greenleaf; Fiscal Year: 2007..Successful completion of this program will result in new noninvasive methods to assess arterial stiffness and other material properties with fast and accurate measurements applicable to the conscious human. ..
- MULTIDIMENSIONAL HEART IMAGING WITH ULTRASOUNDJames Greenleaf; Fiscal Year: 2009....
- ARTERIAL PROPERTIES FROM STIMULATED ACOUSTICAL EMISSIONJames Greenleaf; Fiscal Year: 2009....
- MULTIDIMENSIONAL HEART IMAGING WITH ULTRASOUNDJames Greenleaf; Fiscal Year: 2009....
- ARTERIAL PROPERTIES FROM STIMULATED ACOUSTICAL EMISSIONJames Greenleaf; Fiscal Year: 2003..Successful completion of this program will result in USAE methods that are immediately applicable to clinical studies. ..
- MULTIDIMENSIONAL HEART IMAGING WITH ULTRASOUNDJames Greenleaf; Fiscal Year: 2001....
- ARTERIAL PROPERTIES FROM STIMULATED ACOUSTICAL EMISSIONJAMES FOWLER GREENLEAF; Fiscal Year: 2010....