What are the parameters of ultrasound?
What are the parameters of ultrasound?
The normal human sound range is from 16 Hz to something approaching 15-20,000 Hz (in children and young adults). Beyond this upper limit, the mechanical vibration is known as ultrasound. The frequencies used in therapy are typically between 1.0 and 3.0 MHz (1 MHz = 1 million cycles per second).
How is ultrasound ERA calculated?
To calculate the ERA, the pulse intensity integral was measured over a planar surface at a distance of 5 mm from the face of the ultrasound transducer (this distance was determined within an accuracy of ±0.1 mm by measuring the time of flight between the trigger signal and the arrival of the pulse).
How do you document therapeutic ultrasound?
Documentation
- Subjective: Specifically, some statement from the patient which includes their opinion on their pain, function, swelling, motion restriction, skin condition and/or response to previous treatment.
- Objective: Patient consent, position, treatment area, frequency, intensity, duration, time.
What is the difference between 1 and 3 MHz ultrasound?
Therefore, 1-MHz continuous ultrasound, with a half-value depth of approximately 2.3 cm, is frequently used to treat deep tissues that are approximately 2.3 to 5 cm deep. With its smaller half-value depth, 3-MHz ultrasound is frequently used to heat tissues that are more superficial, from 0.8 to 1.6 cm deep.
What is IFT in physiotherapy?
Interferential therapy (IFT) is a commonly used modality in physiotherapy practice for pain relief. Pain relief is believed to be achieved through the production of endogenous opioids like endorphins and enkephalins.
What is pulse ratio in ultrasound?
The typical pulse ratios of pulse duration time to pulse rest time are 1:1 and 1:4, though there are other ratios available. The proportion of time that the machine is on compared with off is a relevant factor in ultrasound wave dosage calculations.
What is duty factor in ultrasound?
Duty Factor = Pulse Duration / Pulse Repetition Period.
How do you administer an ultrasound?
Direct contact is the most common method that your physical therapist applies ultrasound. In this method, your physical therapist puts a small amount of gel or cream on your body part that is being treated. Then an ultrasound sound head (also known as a transducer) is pressed gently into the gel and against your body.
What’s the difference between tens and IFC?
How Does IFC Differ From TENS? TENS delivers low-frequency current across the surface of the skin, while IFC delivers a higher frequency current that penetrates deeper into the tissue with less discomfort.
