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Echogenicity
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<p>Echogenicity (sometimes as echogenecity) or echogeneity is the ability to bounce an echo, e.g. return the signal in <a href="/facts/Medical_ultrasound/Ju5BFuuV">medical ultrasound</a> examinations. In other words, echogenicity is higher when the surface bouncing the sound echo reflects increased sound waves. <a href="/facts/Tissue_(biology)/H7CpML7A">Tissues</a> that have higher echogenicity are called "hyperechoic" and are usually represented with lighter colors on images in <a href="/facts/Medical_ultrasonography/Ju5BFuuV">medical ultrasonography</a>. In contrast, tissues with lower echogenicity are called "hypoechoic" and are usually represented with darker colors. Areas that lack echogenicity are called "anechoic" and are usually displayed as completely dark. </p>