| Noninvasive LV Pressure Estimation Using Subharmonic Emissions From Microbubbles. | |
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MedLine Citation:
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PMID: 22239898 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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To develop a new noninvasive approach to quantify left ventricular (LV) pressures using subharmonic emissions from microbubbles, an ultrasound scanner was used in pulse inversion grayscale mode; unprocessed radiofrequency data were obtained with pulsed wave Doppler from the aorta and/or LV during Sonazoid infusion. Subharmonic data (in dB) were extracted and processed. Calibration factor (mm Hg/dB) from the aortic pressure was used to estimate LV pressures. Errors ranged from 0.19 to 2.50 mm Hg when estimating pressures using the aortic calibration factor, and were higher (0.64 to 8.98 mm Hg) using a mean aortic calibration factor. Subharmonic emissions from ultrasound contrast agents have the potential to noninvasively monitor LV pressures. |
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Authors:
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Jaydev K Dave; Valgerdur G Halldorsdottir; John R Eisenbrey; Joel S Raichlen; Ji-Bin Liu; Maureen E McDonald; Kris Dickie; Shumin Wang; Corina Leung; Flemming Forsberg |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: JACC. Cardiovascular imaging Volume: 5 ISSN: 1876-7591 ISO Abbreviation: JACC Cardiovasc Imaging Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-01-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101467978 Medline TA: JACC Cardiovasc Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 87-92 Citation Subset: IM |
Copyright Information:
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Copyright © 2012 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Radiology, Thomas Jefferson University, Philadelphia, Pennsylvania; School of Biomedical Engineering and Health Systems, Drexel University, Philadelphia, Pennsylvania. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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