<p><b>Copyright information:</b></p><p>Taken from "Distribution of ultrasonic radiofrequency signal amplitude detects lipids in atherosclerotic plaque of coronary arteries: an ex-vivo study"</p><p>http://www.cardiovascularultrasound.com/content/6/1/18</p><p>Cardiovascular Ultrasound 2008;6():18-18.</p><p>Published online 9 May 2008</p><p>PMCID:PMC2391144.</p><p></p