Name: murine echocardiography and ultrasound imaging
Uploaded: 2010-08-08T19:00:00
Description: Watch this Scientific Journal Video about Murine Echocardiography and Ultrasound Imaging at JoVE.com

Funding sources: HL084087, HL089885, HL091475, S10RR027946, T32 GM07356

1. Preparation for imaging
<ol>
 <li>Begin by securing an isoflurane anesthetized mouse to an animal-handling platform in the supine position. Place a nose cone over the animal's nose and mouth to deliver 0.5-1% isoflurane to maintain the anesthesia.</li>
 <li>Secure the paws of the mouse to the electrode pads with conducting gel. Ensure appropriate ECG, body temperature at 37 &deg;C and check respiratory rate for physiological assessment during imaging. </li>
 <li>Apply depilatory cream to the ches...

<ol>
	<li>Patten, R. D., Hall-Porter, M. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Small+animal+models+of+heart+failure:+development+of+novel+therapies,+past+and+present.">Small animal models of heart failure: development of novel therapies, past and present.</a> Circ Heart Fail. 2, 138-144 (2009).</li><li>Li, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quantification+and+MRI+Validation+of+Regional+Contractile+Dysfunction+in+Mice+Post+Myocardial+Infarction+Using+High+Resolution+Ultrasound.">Quantification and MRI Validation of Regional Contractile Dysfunction in Mice Post Myocardial Infarction Using High Resolution Ultrasound.</a> Ultrasound in Medicine &#38; Biology. 33, 894-904 (2007).</li><li>Gardin, J. M., Siri, F. M., Kitsis, R. N., Edwards, J. G., Leinwand, L. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Echocardiographic+Assessment+of+Left+Ventricular+Mass+and+Systolic+Function+in+Mice.">Echocardiographic Assessment of Left Ventricular Mass and Systolic Function in Mice.</a> Circ Res. 76, 907-914 (1995).</li><li>JG, S. t. e. v. e. n. s. o. n., Weiler, T. B. M., EA, H. o. w. a. r. d., Eyer, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Digital+multigate+Doppler+with+color+echo+and+Doppler+display+-+Diagnosis+of+atrial+and+ventricular+septal+defects.">Digital multigate Doppler with color echo and Doppler display - Diagnosis of atrial and ventricular septal defects.</a> Circulation. 60, (1979).</li><li>Patten, R. D., Aronovitz, M. J., Bridgman, P., Pandian, N. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Use+of+pulse+wave+and+color+flow+Doppler+echocardiography+in+mouse+models+of+human+disease.">Use of pulse wave and color flow Doppler echocardiography in mouse models of human disease.</a> J Am Soc Echocardiogr. 15, 708-714 (2002).</li><li>Hoit, B. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Echocardiographic+characterization+of+the+cardiovascular+phenotype+in+rodent+models.">Echocardiographic characterization of the cardiovascular phenotype in rodent models.</a> Toxicol Pathol. 34, 105-110 (2006).</li></ol>

Serial high frequency echocardiography has emerged as a powerful tool for non-invasive, high-resolution assessment of cardiac morphology and function, particularly in murine models of heart disease. Maintaining physiological body temperature as well as comparable heart rates between mice by adjusting the anesthesia level prior to acquiring images, is critical to the success of this method. All images should be obtained using the same biomarkers (e.g. parasternal long axis imaging at the papillary muscles). Lastly, ana...

A correction was made to <a href="http://www.jove.com/index/details.stp?id=2100">Murine echocardiography and ultrasound imaging</a>. There was an error in the author, Burns Blaxalls', name and the article title. The authors name has been corrected to:
Burns C. Blaxall
instead of:
Burns Blaxall
The article title was changed to:
Murine Echocardiography and Ultrasound Imaging
instead of:
Murine echocardiography and ultrasound imaging

A correction to an author's name and the article title has been made for the article Murine echocardiography and ultrasound imaging.

Erratum: Murine echocardiography and ultrasound imaging

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		<th>Material Name</th>
		<th>Type</th>
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		<th>Catalogue Number</th>
		<th>Comment</th>
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<td>Vevo 2100 Imaging System (120V)</td>
<td>&nbsp;</td>
<td>Visual Sonics</td>
<td>VS-11945</td>
<td>&nbsp;</td>
<tr>
<td>Vevo 2100 Imaging Station 1</td>
<td>&nbsp;</td>
<td>Visual Sonics</td>
<td>SA-11982</td>
<td>&nbsp;</td>
<tr>
<td>Ultrasound Gel</td>
<td>&nbsp;</td>
<td>Parker Laboratories</td>
<td>01-08</td>
<td>&nbsp;</td>
<tr>
<td>Isoflurane</td>
<td>&nbsp;</td>
<td>Abbott Laboratories</td>
<td>05260-05</td>
<td>&nbsp;</td>
<tr>
<td>Vevo Compact Dual Anesthesia System</td>
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murine echocardiography and ultrasound imaging

Rodent models of cardiac pathophysiology represent a valuable research tool to investigate mechanism of disease as well as test new therapeutics.1 Echocardiography provides a powerful, non-invasive tool to serially assess cardiac morphometry and function in a living animal.2 However, using this technique on mice poses unique challenges owing to the small size and rapid heart rate of these animals.3 Until recently, few ultrasound systems were capable of performing quality echocardiography on mice, and those generally lacked the image resolution and frame rate necessary to obtain truly quantitative measurements. Newly released systems such as the VisualSonics Vevo2100 provide new tools for researchers to carefully and non-invasively investigate cardiac function in mice. This system generates high resolution images and provides analysis capabilities similar to those used with human patients. Although color Doppler has been available for over 30 years in humans, this valuable technology has only recently been possible in rodent ultrasound.4,5 Color Doppler has broad applications for echocardiography, including the ability to quickly assess flow directionality in vessels and through valves, and to rapidly identify valve regurgitation. Strain analysis is a critical advance that is utilized to quantitatively measure regional myocardial function.6 This technique has the potential to detect changes in pathology, or resolution of pathology, earlier than conventional techniques. Coupled with the addition of three-dimensional image reconstruction, volumetric assessment of whole-organs is possible, including visualization and assessment of cardiac and vascular structures. Murine-compatible contrast imaging can also allow for volumetric measurements and tissue perfusion assessment.

Watch this Scientific Journal Video about Murine Echocardiography and Ultrasound Imaging at JoVE.com

Murine Echocardiography and Ultrasound Imaging

This video demonstrates use of a rail-mounted high-frequency ultrasound probe to perform echocardiography on an anesthetized mouse. The methods describe both conventional two-dimensional and M-mode measurements of cardiac function in addition to newer, more powerful tools such as color Doppler, strain analysis, as well as general and targeted contrast imaging.

Rodent models of cardiac pathophysiology represent a valuable research tool to investigate mechanism of disease as well as test new therapeutics.1  ...

Research

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