What are the advantages of using transabdominal ultrasound over other imaging modalities for diagnosing gallbladder pathologies?

Transabdominal ultrasound offers several advantages in diagnosing gallbladder pathologies, including non-invasiveness, safety, and wide availability. Although it may have lower sensitivity compared to CT in certain cases, it holds a significant role as a first-line diagnostic tool, particularly effective for detecting gallstones and guiding further evaluative steps.