Mettler Electronics Corp.— Rev.J_09/13/17
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Ultrasound Remaining
Per Cent
Tissue Depth
Centimeters
3.3 MHz 1 MHz
Figure 7.2—Ultrasound Absorption, Fat
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1
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0
10
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Ultrasound Remaining
Percent
Tissue Depth
Centimeters
3.3 MHz 1 MHz
Figure 7.3—Ultrasound Absorption, Muscle with the Ultrasound Beam Perpendicular to
the Muscle Fibers
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10
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100
Ultrasound Remaining
Per Cent
Tissue Depth
Centimeters
3.3 MHz 1 MHz
Figure 7.4—Ultrasound Absorption, Bone
The physics of ultrasound and audible sound are similar, except for frequency. Both travel
as longitudinal waves through a conducting medium. Ultrasound waves can be
propagated in a gaseous, liquid, or solid medium, but not in a vacuum.