Chattanooga Intelect Mobile Ultrasound, Руководство пользователя

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Intelect® Mobile Ultrasound
Duty Cycle – This is the ratio of the “On” time to “Total” time of the cycle, expressed as a percentage . The duty cycle describes the
pulsed modes of ultrasound . The lower the percentage, the lower temporal average intensity . 100% is continuous ultrasound .
Effective Radiating Area (ERA) – A measure of the ultrasound beam made underwater, 5 mm from the radiating surface of the
sound head . The ERA is always smaller than the geometric area of the sound head, but should be as close as possible . This
measurement is used to calculate the ultrasound intensity in W/cm
2 .
Frequency (Freq) – Selectable to 1 or 3 MHz with the 1 cm
2 , 2 cm 2 , 5 cm 2 , or 10 cm 2 sound head (only 3 .3 MHz is available with the
1 cm 2
sound head) . The lower the frequency, the longer the wavelength, the deeper the penetration of ultrasound .
Lead Zirconate Titanate – A synthetic crystal used to create the ultrasound beam by vibrating 1,000,000 (1 MHz) or 3,000,000
(3 MHz) times per second . This type of crystal is both durable and efficient in its functions .
Power – A measure of the intensity of the ultrasound delivered to the patient . Unit of measure is watts (W) .
Pulse Duration – Refers to the amount of time the ultrasound is being delivered in the pulsed mode . For example, in the 20% duty
cycle mode, the ultrasound is delivered for 2 msec and off for 8 msec (at 100 Hz) throughout the treatment period .
Pulse Frequency – The pulse frequency is the number of pulses per second and is expressed in hertz . The available pulse
frequencies on the Intelect Mobile Ultrasound are 16, 48, and 100 Hz .
Pulsed Mode – The output of the ultrasound is automatically interrupted during the treatment time . This limits the amount of
energy delivered to the tissues .
Sound Head – The aluminum face of the applicator that contacts the patient’s skin . It covers a transducer mechanism that converts
electrical energy to mechanical energy in the form of a vibrating crystal .
OVERVIEW OF ULTRASOUND THERAPY - COMMON TERMS (CONTINUED)
ABOUT ULTRASOUND THERAPY