Application of contrast-enhanced ultrasound in diagnosis of gallbladder protrusion lesions

Gallbladder protrusion lesions(GPL) have two types:neoplastic lesions and non-neoplastic lesions. Neoplastic lesions include gallbladder adenoma and gallbladder carcinoma, while non-neoplastic lesions include cholesterol polyps, inflammatory polyps, gallbladder adenomyosis， etc. Conventional ultrasound examination is the preferred imaging examination for diagnosing GPL, however its diagnostic capacity is not satisfied. With the progress of medical technology, the value of contrast-enhanced ultrasound(CEUS) in the diagnosis of some GPL has been recognized. Different types of GPL present different degrees of enhancement, regression characteristics, enhancement modes, vascular architecture, and continuity of gallbladder wall in the arterial and venous phases of CEUS. Many studies at home and abroad believe that CEUS plays an important role in the diagnosis and differential diagnosis of GPL. When the contrast medium reaches its peak, the enhanced homogeneity of the lesions has the highest diagnostic efficiency in