CSB046 US questions with correct answers

What frequency of sound waves are used in US? Answer 1-20 Mhz Role of sonographer Answer - records representative images - make independent decisions on course of exam - record findings and submit to radiologist Advantages of US Answer - No radiation - Mobile equipment - fast and cost-effective - well tolerated by patients - excellent soft tissue info - real time imaging - accurate measurements of structures - blood studies Disadvantages of US Answer - many areas not suitable for US imaging - hand held transducer causes scan plane variability so difficult to produce exact scan plane - operator dependent - difficult to interpret images transverse scan plane Answer - cuts across patient dividing body into superior and inferior - transducer on anterior aspect of patient