Dynamic-transmit focusing using time-dependent focal zone and center frequency

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

Volumn 50, Issue 2, 2003, Pages 142-152

  Zhou, Shiwei ^a   Hossack, John A ^a  

^a University of Virginia   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BANDPASS FILTERS; BANDWIDTH; DIGITAL FILTERS; NATURAL FREQUENCIES; PERTURBATION TECHNIQUES; TIME VARYING NETWORKS;

DYNAMIC-TRANSMIT FOCUSING; PHASE ABERRATION; TIME-DEPENDENT FOCAL ZONE; TISSUE ATTENUATION;

FOCUSING;

ALGORITHM; ARTICLE; ARTIFACT; BIOLOGICAL MODEL; COMPARATIVE STUDY; COMPUTER SIMULATION; ECHOGRAPHY; EVALUATION; IMAGE ENHANCEMENT; INSTRUMENTATION; METHODOLOGY; QUALITY CONTROL; RADIATION SCATTERING; SENSITIVITY AND SPECIFICITY; SIGNAL PROCESSING; TRANSDUCER;

ALGORITHMS; ARTIFACTS; COMPUTER SIMULATION; IMAGE ENHANCEMENT; MODELS, BIOLOGICAL; QUALITY CONTROL; SCATTERING, RADIATION; SENSITIVITY AND SPECIFICITY; SIGNAL PROCESSING, COMPUTER-ASSISTED; TRANSDUCERS; ULTRASONOGRAPHY;

EID: 0037289709     PISSN: 08853010     EISSN: None     Source Type: Journal    
DOI: 10.1109/TUFFC.2003.1182118     Document Type: Article

References (16)

1. T. Christopher, "Finite amplitude distortion-based inhomogeneous pulse echo ultrasonic imaging," IEEE Trans. Ultrason., Ferroelect., Freq. Contr., vol. 44, pp. 125-139, 1997.
2. M. O'Donnell and L. Thomas, "Efficient synthetic aperture imaging from a circular aperture with possible application to catheter-based imaging," IEEE Trans. Ultrason., Ferroelect., Freq. Contr., vol. 39, pp. 366-380, 1992.
3. S. Freeman, P.-C. Li, and M. O'Donnell, "Retrospective dynamic transmit focusing," Ultrason. Imag., vol. 17, pp. 173-196, 1995.
4. M. O'Donnell, "Dynamic transmit focusing of a steered parameter ultrasonic beam," U.S. Patent 5,235,982. 1993.
5. J.-Y. Lu and J. F. Greenleaf, "In-vitro and in-vivo real-time imaging with ultrasonic limited diffraction beams," IEEE Trans. Med. Imag., vol. 12, pp. 819-829, 1993.
6. K. Ranganathan and W. F. Walker, "A novel aperture design method for improved depth of field in ultrasound imaging," presented at the IEEE Ultrason. Symp., Oct. 2001, Atlanta, GA.
7. J. A. Hossack, "Extended focal depth imaging for medical ultrasound," presented at the IEEE Ultrason. Symp., Nov. 1996, San Antonio, TX.
8. T. A. Ritter, K. K. Shung, X. Geng, S. E. Park, and T. R. Shrout, "1-3 Single crystal composites for ultrasound transducer arrays," presented at Medical Imaging 1998, Ultrasonic Transducer Engineering, San Diego, CA, Feb. 1998.
9. J. A. Hossack and B. A. Auld, "Improving the characteristics of a transducer using multiple piezoelectric layers," IEEE Trans. Ultrason., Ferroelect., Freq. Contr., vol. 40, pp. 131-139, 1993.
10. M. O'Donnell, Ultrasound short course, http://bul.eecs.umich.edu/~odonnel/short_course/chapter2.pdf, 1998
11. C. Cole, A. Gee, and T. Lui, "Method and apparatus for transmit beamformer," U.S. Patent No. 5,675,554, 1996.
12. J. A. Hossack, J.-H. Mo, and C. Cole, "Transmit beamformer with frequency dependent focus," U.S. Patent No. 5,608,690, 1997.
13. C. Knell, J. Urbano, A. Lannutti, and K. Randall, "Medical diagnostic ultrasound system and method," U.S. Patent No. 6,312,381, 2001.
14. J. Jensen and N. Svendsen, "Calculation of pressure fields from arbitrarily shaped, apodized and excited ultrasound transducers," IEEE Trans. Ultrason., Ferroelect., Freq. Contr., vol. 39, pp. 262-267, 1992.
15. L. M. Hinkelman, T. D. Mast, L. A. Metlay, and R. C. Waag, "The effect of abdominal wall morphology on ultrasonic pulse distortion. Part I. Measurements," J. Acoust. Soc. Amer., 104, pp. 3635-3649, 1998.
16. J. A. Hossack, J. W. Allison, A. Gee, and M. O'Donnell, "Ultrasonic Doppler imaging system with frequency dependent focus," U.S. Patent 5,891,037, 1999.