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The principle of ultrasound: Difference between revisions
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An estimate of peak intensity is given by the '''mechanical index (MI)''' calculated from the peak negative pressure (MPa) divided by the square root of transmitted frequency (MHz). The mechanical index (an estimate of the maximum amplitude of the pressure pulse in tissue) can be used as an estimate for the degree of bio-effects a given set of ultrasound parameters will induce. A higher mechanical index means a larger bio-effect. Currently the FDA stipulates that diagnostic ultrasound scanners cannot exceed a mechanical index of 1.9. | An estimate of peak intensity is given by the '''mechanical index (MI)''' calculated from the peak negative pressure (MPa) divided by the square root of transmitted frequency (MHz). The mechanical index (an estimate of the maximum amplitude of the pressure pulse in tissue) can be used as an estimate for the degree of bio-effects a given set of ultrasound parameters will induce. A higher mechanical index means a larger bio-effect. Currently the FDA stipulates that diagnostic ultrasound scanners cannot exceed a mechanical index of 1.9. | ||
==Imaging principles of ultrasound== | |||
==Transducers== | |||
==References== | |||
==Image quality optimization== | |||
'''WIL JE DAT IK DIT WEGHAAL?''' | '''WIL JE DAT IK DIT WEGHAAL?''' | ||