DOPPLER TOMOGRAPHY.

J. F. Greenleaf; J. Ylitalo

doi:10.1109/ultsym.1986.198852

DOPPLER TOMOGRAPHY.

J. F. Greenleaf, J. Ylitalo

Physiology & Biomedical Engineering

Research output: Contribution to journal › Conference article › peer-review

8 Scopus citations

Abstract

Doppler tomography was performed in phantoms in which fluid was flowing in several tubes. The backscatter continuous wave Doppler signal from a 2-MHz carrier was measured for 128 samples along 200 profiles taken at equispaced angles of view around the phantom. The RF signal was mixed to base band, low-pass filtered, and A/D converted at 10 kHz for subsequent computer analysis. The Doppler power in a specified frequency band was used to estimate number of particles moving within a certain velocity range. Reconstructed images were obtained with and without flow in tubes within excised human breast. Images proportional to number of particles flowing at velocities greater than a certain velocity were of good quality.

Original language	English (US)
Pages (from-to)	837-841
Number of pages	5
Journal	Ultrasonics Symposium Proceedings
DOIs	https://doi.org/10.1109/ultsym.1986.198852
State	Published - Jan 1 1986

ASJC Scopus subject areas

Engineering(all)

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10.1109/ultsym.1986.198852

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abstract = "Doppler tomography was performed in phantoms in which fluid was flowing in several tubes. The backscatter continuous wave Doppler signal from a 2-MHz carrier was measured for 128 samples along 200 profiles taken at equispaced angles of view around the phantom. The RF signal was mixed to base band, low-pass filtered, and A/D converted at 10 kHz for subsequent computer analysis. The Doppler power in a specified frequency band was used to estimate number of particles moving within a certain velocity range. Reconstructed images were obtained with and without flow in tubes within excised human breast. Images proportional to number of particles flowing at velocities greater than a certain velocity were of good quality.",

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AB - Doppler tomography was performed in phantoms in which fluid was flowing in several tubes. The backscatter continuous wave Doppler signal from a 2-MHz carrier was measured for 128 samples along 200 profiles taken at equispaced angles of view around the phantom. The RF signal was mixed to base band, low-pass filtered, and A/D converted at 10 kHz for subsequent computer analysis. The Doppler power in a specified frequency band was used to estimate number of particles moving within a certain velocity range. Reconstructed images were obtained with and without flow in tubes within excised human breast. Images proportional to number of particles flowing at velocities greater than a certain velocity were of good quality.

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JF - Ultrasonics Symposium Proceedings

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DOPPLER TOMOGRAPHY.

Abstract

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