Research 

development

Kurt Grey

physiotherapist

SONODOSE.lite

Main Menu:

Latest update :

24-03-2011

A WEB CALCULATOR for ULTRASOUND DOSAGE in PHYSIOTHERAPY,

always available on your computer ANYWHERE.

Solving questions like:

How should I set the intensity on my ultrasound apparatus to achieve 0,75W/cm² in the lesion?

How should I set the timer on my ultrasound apparatus to ensure a local exposure of 1 minute (per head)?

INSTRUCTIONS for USE:

INPUT:

Enter the required information in the green fields:

• Depth is the distance in cm, e.g. 2,5cm, from the skin surface to the lesion.

• Therapeutic intensity is the local intensity in the lesion you are aiming at.

• Tissue type: the calculation in the "lite-version" is based on a one-layer tissue model. Therefore you must decide which type of tissue is predominant in the pathway from the skin to the target tissue, i.e. the tissue that causes the dampening of the ultrasound on its way. Subcutis = "fat" is your choice, when the lesion is in superficial muscle or tendon. In cases with many layers of equal thickness use "average".

• The Local treatment time is the average exposure time each cell receives, called by some the "time per transducer head".

• The ERA = effective radiation area =  beam size = transducer size. This information is usually found on your ultrasound transducer.

• The lesion area: as you palpate the lesion, its size is projected to the skin. Drawing an outline on the skin helps in getting a precise measure.

Move the cursor between the input fields using the  TAB-key. You may need to end your input session by pressing the blue "Update" button at the lower end of the screen.

In Windows Vista Ctrl+/Ctrl-  zooms in/out.

OUTPUT:

• The red text present the results:

  • The apparatus intensity setting and

  • the total treatment time, = the apparatus timer setting

  • Maximum local heat generation and

  • the heat generated at the lesion

• CHARTS:

  • chart 1: the local intensity from the skin to the lesion

  • chart 2: an estimate of the generated local heat from the skin to the lesion.

The charts immediately reflect the changing results, as you enter your parameters. Please note, that the units on the Y-axis change accordingly.

To print the page press the blue button "Print" at the bottom of the screen.

In Windows Explorer press F11 to create a zoom effect by  toggling off your menus. Toggle back on by pressing F11 again.

In Windows Vista zoom is obtained by pressing Ctrl+ and Ctrl-.

While you enter data in the input fields, the backspace key helps your editing.

TO QUIT THE CALCULATOR:

After pressing the blue update button, pressing the backspace key will bring you back to this page.

to SONODOSE

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