Low and strong echoes on ultrasound are not necessarily related to good or bad. Echo on ultrasound refers to the degree of attenuation of the ultrasound. Different tissue densities have different levels of attenuation, resulting in inconsistent echoes. Stronger echoes mean more tissue density and weaker echoes mean less tissue density. Common ultrasound echoes are hyperechoic, isoechoic, hypoechoic, weak echoes, and anechoic. For example, some liver calcifications, stones, and old lesions will be hyperechoic, while others, such as tumors, cystic lesions, and edema, will be hyperechoic, but it is not possible to make a generalization. Therefore, whether hyperechoic or hyperechoic ultrasonography is better, it needs to be combined with other imaging tests or pathological tissue biopsy to clarify the nature of the lesion to determine whether it is good or bad.