1. Precautions before abdominal color Doppler ultrasound examination
Eat less greasy food the day before the examination, and prohibit drinking water, medication, and breakfast before the morning examination.
2. Precautions for female pelvic ultrasound
Pelvic color Doppler ultrasound (intracavitary) needs to avoid menstruation and empty urine. This examination method is simple, fast and accurate. It can also reduce the pain of holding urine in conventional ultrasound examinations. Unmarried women are not allowed to do vaginal ultrasound examination; pelvic color Doppler ultrasound (extracavitary) ) Generally, drink 300∽500ml of water 1 hour before the examination to fill the bladder moderately.
3. Precautions for color Doppler ultrasound of thyroid and carotid artery
To ensure the smooth progress of the inspection, high-necked clothes and necklaces should be avoided.
4. Precautions for prostate color Doppler ultrasound examination
Prostate color Doppler ultrasound examination does not require excessive filling of the bladder. Half or less urine in the bladder is sufficient. Too much filling makes the detection inconvenient.








