Do thyroid B ultrasound require fasting?

Thyroid ultrasound does not need fasting, because thyroid tissue is in front of the neck, and esophagus, stomach are far away, especially with the gastrointestinal tract is far away, rice through the esophagus has long been to the gastrointestinal tract. Thyroid is a relatively shallow organ, eating thyroid ultrasound examination is no effect. And encourage patients, if do ultrasound examination, morning or normal meal, patients to ensure energy, other drugs can eat, so do not need fasting, routine to it. The patient came in the morning, and the doctor said that ultrasound should be done, and an examination form was issued. It could be done in the morning or in the afternoon, and there was no need for fasting.