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AHMSIC Reasearch 2009 ( Indus Instruments).pdf
High Frequency Pulsed Doppler Transducers |
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All of the transducers described below can be gas sterilized for chronic implantation or for use during sterile surgery. We often have epoxy cuffs in stock, but most probes can be built to order in two weeks. | ||||||||||||||||||||||||||||||||||
For prices, please visit our Price List page. | ||||||||||||||||||||||||||||||||||
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Tubing or Needle Mounted Probes | ||||||||||||||||||||||||||||||||||
For applications where a rigid, end-mounted transducer is required, we can mount crystals to the end of a piece of tubing or needle. The smallest size is a 16 gauge needle (recess for 1 mm dia 20 MHz crystal), and the largest is 1/4" brass tubing (recess for 5 mm dia 10 MHz crystal). We can also mold epoxy lenses to the crystal face to focus the sound beam. This type of focussed probe has been applied in mice to measure cardiac and peripheral blood velocity noninvasively. | ||||||||||||||||||||||||||||||||||
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20 MHz Catheters | ||||||||||||||||||||||||||||||||||
Doppler catheters for research use in animals can be made as small as 3 French (1 mm dia) on a custom basis. For clinical applications, standard and custom catheters operating at 10 or 20 MHz are available from Millar Instruments. | ||||||||||||||||||||||||||||||||||
Research Publications Using Indus Equipment |
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Publications:1. Hartley CJ, Taffet GE, Reddy AK, Entman ML, and Michael LH. “Noninvasive Cardiovascular Phenotyping in Mice”, Institute for Laboratory Animal Research, 43(3):147-158, 2002. 2. Hartley CJ, Reddy AK, Madala S, Martin-McNulty B, Vergona R, Sullivan ME, Halks-Miller M, Taffet GE, Michael LH, Entman ML, and Wang Y. “Hemodynamic Changes in Apolipoprotein E-Knockout Mice”, American Journal of Physiology Heart Circulatory Physiology, 279: H2326-H2334, 2000. 3. Hartley CJ, Lacy JL, Dai D, Nayak N, Taffet GE, Entman ML, Michael LH. “Functional Cardiac Imaging in Mice Using Ta-178”, Nature Medicine, 5:237-239, 1999. 4. Michael LH, Ballantyne CM, Zachariah JP, Gould KE, Pocius JS, Taffet GE, Hartley CJ, Pham TT, Daniel SL, Funk E, Entman ML. "Myocardial Infarction and Remodeling in Mice: Effect of Reperfusion." American Journal of Physiology, 277: H660-H668, 1999. Other Related Publications:1. Hartley CJ, Taffet GE, Michael LH, Pham TT, Entman ML. “Noninvasive Determination of Pulse-wave Velocity in Mice”, American Journal of Physiology. 273:H42-47, 1997. 2. Taffet GE, Pham TT, Hartley CJ, "The Age-associated Alterations in Late Diastolic Function in Mice are Improved by Caloric Restriction." Journal of Gerontology A Biol Sci Med Sci 52: B285-B290, 1997. 3. Taffet GE, Hartley CJ, Wen X-Y, Pham TT, Michael LH, Entman ML. “Non-invasive Indices of Cardiac Systolic and Diastolic Function in the Hyperthyroid and Senescent Mouse”, American Journal of Physiology, 270:H2204-H2209, 1996. Abstracts/Presentations:1. Madala S, CJ Hartley, and AK Reddy, “Digital Signal Processing in Diagnostic Ultrasound Systems: An Overview”, Houston Society for Engineering in Medicine and Biology, 19th Annual Conference, Houston, Texas, February 2001. 2. Reddy AK, GE Taffet, CJ Hartley, S Madala, TT Pham, LH Michael, and ML Entman, “Measurement of Aortic Input Impedance in Mice”, Houston Society for Engineering in Medicine and Biology, 19th Annual Conference, Houston, Texas, February 2001. 3. Hartley CJ, AK Reddy, S Madala, TT Pham, LN Ochoa, J Pocius, LH Michael, ML Entman, and GE Taffet, “High Resolution Ultrasonic Blood Flow Sensing in Mice”, Houston Society for Engineering in Biology and Medicine, 19th Annual Conference, Houston, Texas, February 2001.
4. Hartley CJ, LN Ochoa, AK Reddy, LH Michael, JS Pocius, TT Pham, CW Scott, ML Entman, J W Clark Jr., and GE Taffet, “Vascular Adaptations to Transverse Aortic Banding in Mice”, IEEE-EMBS conference, Istanbul, Turkey, October 2001. 6. Ochoa LN, TT Pham, J Pocius, CW Scott, DP Doan, AK Reddy, CJ Hartley, LH Michael, and GE Taffet, “Doppler Evaluation of Aortic Constrictions in Mice”, Houston Society for Engineering in Medicine and Biology, 18th Annual Conference, Houston, Texas, February 2000. 7. Reddy AK, GE Taffet, CJ Hartley, S Madala, TT Pham, R Kwun, T Treviño, J Pocius, LH Michael, and ML Entman, “Noninvasive Systolic and Diastolic Blood Pressure Measurement in Mice Using Tail-Cuff Method”, Houston Society for Engineering in Medicine and Biology, 18th Annual Conference, Houston, Texas, February 2000. 8. Hartley CJ, AK Reddy, S Madala, B Martin-McNulty, R Vergona, ME Sullivan, M Halks-Miller, GE Taffet, LH Michael, ML Entman, and Y Wang, “Hemodynamics of Atherosclerotic Mice”, Chicago-2000 World Congress on Medical Physics and Biomedical Engineering, Chicago, July 23-28, 2000. 9. Michael LH, AK Reddy, GE Taffet, TT Pham, J Pocius, ML Entman, and CJ Hartley, “Cardiovascular Physiologic Genomics in Mice”, Houston Society for Engineering in Medicine and Biology, 17th Annual Conference, Houston, Texas, February 1999. 10. Madala S, AK Reddy, and CJ Hartley, “Design of Ultrasonic Doppler Instrumentation for Mice”, Houston Society for Engineering in Medicine and Biology, 17th Annual Conference, Houston, Texas, February 1999. 11. Hartley CJ, JL Lacy, D Dai, N Nayak, AK Reddy, GE Taffet, ML Entman, and LH Michael, “Functional Cardiac Imaging in Mice Using Ta-178”, HIRES 1999, Amsterdam, The Netherlands, September 1999. 12. C. J. Hartley, S. Madala, J. L. Lacy, A. K. Reddy, G. E. Taffet, K. Kurrelmeyer, J. Pocius, T.T. Pham, N. Nayak, M. L. Entman, and L. H. Michael, "Noninvasive Methods to Measure Cardiovascular Function in Mice", National Institutes of Health Bioengineering Symposium, Bethesda, Maryland, USA, February 27-28, 1998. 13. A.K. Reddy, C. J. Hartley, G. E. Taffet, S. Madala, T. T. Pham, and M. L. Entman, "Noninvasive Measurement of Aortic Blood Flow Parameters in Mice", Houston Society for Engineering in Biology and Medicine, 16th Annual Conference, Houston, Texas, USA, April 2-3, 1998. 14. A.K. Reddy, C. J. Hartley, G. E. Taffet, S. Madala, T. T. Pham, and M. L. Entman, "Measurement of Pulse-Wave Velocity in Mice", Houston Society for Engineering in Biology and Medicine, 16th Annual Conference, Houston, Texas, USA, April 2-3, 1998. 15. C.J. Hartley, J. L. Lacy, J. Pocius, S. Daniel, E. Funk, G. E. Taffet, N. Nayak, M. L. Entman, and L. H. Michael, "Characterization of a Murine Model of Heart Failure by Nuclear Angiography", Experimental Biology (FASEB), San Fransisco, California, USA, April 18-22, 1998. 16. C.J. Hartley, J. L. Lacy, G. E. Taffet, S. Madala, A. K. Reddy, M. L. Entman, and L. H. Michael, “Noninvasive Characterization of Heart Failure in a Murine Model of Coronary Occlusion”, XIII Congress of the CSDS; Gent, Belgium, August 27-30, 1998. 17. C.J. Hartley, J. L. Lacy, M. L. Entman, J. Pocius, G. E. Taffet, H. C. Thompson, D. Dai, C. S. Martin, N. Nayak, and L. H. Michael, "Quantitative Left and Right Ventricular Function in Mice with 178Ta Nuclear Angiography", American Heart Association 70th Scientific Sessions, Circulation 96-Supplement I, Orlando, Florida, U.S.A., November 9-12, 1997. 18. C.J. Hartley, G. E. Taffet L. H. Michael, T. T. Pham, L. A. Schildmeyer, G. Karsenty, R.J. Schwartz, and M. L. Entman, "Doppler Assessment of Aortic Pulse-Wave Velocity Velocity in Genetically Altered Mice", American Heart Association 70th Scientific Sessions, Circulation 96-Supplement I, Orlando, Florida, U.S.A., November 9-12, 1997. |