Benign gallbladder diseases: Imaging techniques and tips for differentiating with malignant gallbladder diseases

Figure 1 Gallstones. A, B: Typical echogenic lesions of gallbladder with posterior acoustic shadowing (arrows), that move in dependent manner during supine (A) to lateral decubitus (B) positional shift on ultrasound; C, D: Calcified lesions visible on precontrast computed tomography scan (C), appearing as low signal intensity on T2-weighted image (D).