Improved visualization of aortic intima-media thickening with the use of perflutren lipid microspheres
| Autor: | Jacob G. Hoover, Sarah Kutter, Steven C. Herrmann, Denise Sherriff, Arthur J. Labovitz, S. Michelle Bierig, Alan Maniet |
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| Rok vydání: | 2005 |
| Předmět: |
medicine.medical_specialty
Perflutren Lipid Microspheres Aortic Diseases Contrast Media Aorta Thoracic Sensitivity and Specificity Imaging phantom Precontrast Bolus (medicine) medicine.artery Image Interpretation Computer-Assisted medicine Thoracic aorta Humans Radiology Nuclear Medicine and imaging Aorta Fluorocarbons business.industry Phantoms Imaging Reproducibility of Results Atherosclerosis Image Enhancement Aortic intima Echocardiography cardiovascular system Radiology Thickening Cardiology and Cardiovascular Medicine business Tunica Intima human activities Echocardiography Transesophageal |
| Zdroj: | Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography. 18(12) |
| ISSN: | 1097-6795 |
| Popis: | Transesophageal echocardiography (TEE) has been used to diagnose atherosclerotic disease for patients who present with systemic embolic events. The primary aim of this study was to assess the supplemental value of echocardiographic contrast to standard TEE in identifying the aortic intima-medial thickness.An aorta phantom was used to validate the accuracy of border delineation with and without contrast during TEE imaging. In all, 44 patients underwent TEE imaging of the thoracic aorta with a subsequent administration of a 0.3-mL bolus of perflutren lipid microspheres (Definity). Precontrast and postcontrast images were analyzed semiquantitatively for border delineation and quantitatively for intima-medial thickness and cross-sectional area.Wall thickness in the aortic phantom model with contrast was smaller, more accurate, and more reproducible to the true measurement. The clinical studies reflected similar results with average contrast intima-medial thickness measured at 0.15 +/- 0.08 cm and noncontrast at 0.18 +/- 0.08 cm (P.01). The lateral wall showed the greatest improvement with a score of 1.23 increasing to an average of 1.82 (P.001) with contrast. The medial, anterior, and posterior walls improved to an average 1.98, 1.39, and 2.0, respectively (P = .01).Contrast agents provide better aortic intima-media enhancement during TEE. |
| Databáze: | OpenAIRE |
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