関連ワード:  is a hida scan an ultrasound    is a hida scan an endoscopic ultrasound    is a hida scan better than an ultrasound    is a hida scan the same as an ultrasound    what is the difference between a hida scan and an ultrasound    what type of scan is a hida scan    is hida scan more accurate than ultrasound    what kind of scan is a hida scan    what does a hida scan show that an ultrasound does not