Fourier-phase imaging can be used to objectively analyze myocardial contrast echocardiograms
| Autor: | H.F. Kuecherer, M. Balea, Michael K. Cahalan, Scot H. Merrick, N. B. Schiller, R. Bekerdjian, T. Hilbel, A. Filusch, M.A. Reiter, E. Botvinick, I. Russell, E. Foster |
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| Rok vydání: | 2002 |
| Předmět: |
Materials science
business.industry musculoskeletal neural and ocular physiology media_common.quotation_subject Ultrasound Fourier phase Intensity (physics) symbols.namesake Nuclear magnetic resonance Fourier transform Fourier analysis otorhinolaryngologic diseases symbols Harmonic Contrast (vision) sense organs business Perfusion psychological phenomena and processes media_common Biomedical engineering |
| Zdroj: | Computers in Cardiology 2000. Vol.27 (Cat. 00CH37163). |
| DOI: | 10.1109/cic.2000.898489 |
| Popis: | To objectively display myocardial opacification following intravenous injection of ultrasound contrast agents, we applied a first harmonic Fourier transformation to precordial harmonic Power-Doppler images in 21 patients undergoing Tl-201-SPECT, in 13 control subjects, and to epicardial second harmonic B-mode images in 10 patients undergoing CABG. Temporal and spatial distribution of myocardial intensities were analyzed. Marked temporal delays (phase shift 106/spl plusmn/90/spl deg/), and low intensities (30/spl plusmn/20) were found in 13/14 perfusion defects. Epicardial imaging showed higher intensity increases in septal (/spl Delta/ 40/spl plusmn/22) than in posterolateral segments (/spl Delta/ 20/spl plusmn/10, p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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