Gynecologic ultrasound is the main imaging modality for diagnosing gynecologic internal genital diseases, either transabdominal or transvaginal, the difference between the two is that the pathways are different, just like the Yangguan Road and the Dokki Bridge, both can achieve their goals, except that transvaginal eliminates the pain of holding urine, and is used in emergencies and in old age. If you ask which is better? The right one is better!