Abstract
The use of the wideband maximum likelihood estimator (MLE) is shown to improve the color flow mapping of the blood velocity profile. Using a transmitted signal with a significant fractional bandwidth, it is shown that the wideband MLE improves the quality of the color flow estimate and simultaneously allows an increase in the frame rate. It is the improved global accuracy of the estimate, with the use of a new signaling scheme, that allows an increase in the frame rate of the display. The signaling scheme interleaves transmission of pulses in two or three directories. This interleaving, with nonperiodic transmission, reduces the total number of pulses required to achieve a fixed level of local and global accuracy. To study the overall estimator performance, the authors evaluate the expected estimator output and demonstrate that the width of the mainlobe and height of subsidiary peaks are reduced through the use of this estimator and signaling scheme.
| Original language | English (US) |
|---|---|
| Title of host publication | Ultrasonics Symposium Proceedings |
| Publisher | Publ by IEEE |
| Pages | 1517-1521 |
| Number of pages | 5 |
| Volume | 3 |
| State | Published - 1990 |
| Event | Proceedings of the IEEE 1990 Ultrasonics Symposium - Honolulu, HI, USA Duration: Dec 4 1990 → Dec 7 1990 |
Other
| Other | Proceedings of the IEEE 1990 Ultrasonics Symposium |
|---|---|
| City | Honolulu, HI, USA |
| Period | 12/4/90 → 12/7/90 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Improved color flow mapping using the wideband maximum likelihood estimator. / Ferrara, K. W.; Algazi, V. R.
Ultrasonics Symposium Proceedings. Vol. 3 Publ by IEEE, 1990. p. 1517-1521.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Improved color flow mapping using the wideband maximum likelihood estimator
AU - Ferrara, K. W.
AU - Algazi, V. R.
PY - 1990
Y1 - 1990
N2 - The use of the wideband maximum likelihood estimator (MLE) is shown to improve the color flow mapping of the blood velocity profile. Using a transmitted signal with a significant fractional bandwidth, it is shown that the wideband MLE improves the quality of the color flow estimate and simultaneously allows an increase in the frame rate. It is the improved global accuracy of the estimate, with the use of a new signaling scheme, that allows an increase in the frame rate of the display. The signaling scheme interleaves transmission of pulses in two or three directories. This interleaving, with nonperiodic transmission, reduces the total number of pulses required to achieve a fixed level of local and global accuracy. To study the overall estimator performance, the authors evaluate the expected estimator output and demonstrate that the width of the mainlobe and height of subsidiary peaks are reduced through the use of this estimator and signaling scheme.
AB - The use of the wideband maximum likelihood estimator (MLE) is shown to improve the color flow mapping of the blood velocity profile. Using a transmitted signal with a significant fractional bandwidth, it is shown that the wideband MLE improves the quality of the color flow estimate and simultaneously allows an increase in the frame rate. It is the improved global accuracy of the estimate, with the use of a new signaling scheme, that allows an increase in the frame rate of the display. The signaling scheme interleaves transmission of pulses in two or three directories. This interleaving, with nonperiodic transmission, reduces the total number of pulses required to achieve a fixed level of local and global accuracy. To study the overall estimator performance, the authors evaluate the expected estimator output and demonstrate that the width of the mainlobe and height of subsidiary peaks are reduced through the use of this estimator and signaling scheme.
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M3 - Conference contribution
AN - SCOPUS:0025575073
VL - 3
SP - 1517
EP - 1521
BT - Ultrasonics Symposium Proceedings
PB - Publ by IEEE
ER -