<P> Medical ultrasonography uses high frequency broadband sound waves in the megahertz range that are reflected by tissue to varying degrees to produce ( up to 3D ) images . This is commonly associated with imaging the fetus in pregnant women . Uses of ultrasound are much broader , however . Other important uses include imaging the abdominal organs , heart , breast , muscles , tendons , arteries and veins . While it may provide less anatomical detail than techniques such as CT or MRI , it has several advantages which make it ideal in numerous situations , in particular that it studies the function of moving structures in real - time , emits no ionizing radiation , and contains speckle that can be used in elastography . Ultrasound is also used as a popular research tool for capturing raw data , that can be made available through an ultrasound research interface , for the purpose of tissue characterization and implementation of new image processing techniques . The concepts of ultrasound differ from other medical imaging modalities in the fact that it is operated by the transmission and receipt of sound waves . The high frequency sound waves are sent into the tissue and depending on the composition of the different tissues ; the signal will be attenuated and returned at separate intervals . A path of reflected sound waves in a multilayered structure can be defined by an input acoustic impedance ( ultrasound sound wave ) and the Reflection and transmission coefficients of the relative structures . It is very safe to use and does not appear to cause any adverse effects . It is also relatively inexpensive and quick to perform . Ultrasound scanners can be taken to critically ill patients in intensive care units , avoiding the danger caused while moving the patient to the radiology department . The real time moving image obtained can be used to guide drainage and biopsy procedures . Doppler capabilities on modern scanners allow the blood flow in arteries and veins to be assessed . </P>
<P> Medical ultrasonography uses high frequency broadband sound waves in the megahertz range that are reflected by tissue to varying degrees to produce ( up to 3D ) images . This is commonly associated with imaging the fetus in pregnant women . Uses of ultrasound are much broader , however . Other important uses include imaging the abdominal organs , heart , breast , muscles , tendons , arteries and veins . While it may provide less anatomical detail than techniques such as CT or MRI , it has several advantages which make it ideal in numerous situations , in particular that it studies the function of moving structures in real - time , emits no ionizing radiation , and contains speckle that can be used in elastography . Ultrasound is also used as a popular research tool for capturing raw data , that can be made available through an ultrasound research interface , for the purpose of tissue characterization and implementation of new image processing techniques . The concepts of ultrasound differ from other medical imaging modalities in the fact that it is operated by the transmission and receipt of sound waves . The high frequency sound waves are sent into the tissue and depending on the composition of the different tissues ; the signal will be attenuated and returned at separate intervals . A path of reflected sound waves in a multilayered structure can be defined by an input acoustic impedance ( ultrasound sound wave ) and the Reflection and transmission coefficients of the relative structures . It is very safe to use and does not appear to cause any adverse effects . It is also relatively inexpensive and quick to perform . Ultrasound scanners can be taken to critically ill patients in intensive care units , avoiding the danger caused while moving the patient to the radiology department . The real time moving image obtained can be used to guide drainage and biopsy procedures . Doppler capabilities on modern scanners allow the blood flow in arteries and veins to be assessed . </P>
a method of obtaining an image of the interior of the body that does not use radiation
a method of obtaining an image of the interior of the body that does not use radiation
ultrasound
ultrasound