How does ultrasound differ from other radiological exams?

How does ultrasound differ from other radiological exams?

Kenneth W. Chin (M.D., F.A.C.R.) gives expert video advice on: How does ultrasound work?; Is ultrasound safe?; Why has ultrasound been controversial? and more...

Ultrasound differs from other radiological examinations in that the images are obtained through a hand held transducer or device which allows us to direct that device to any specific part of the body.