Principle
The velocity of sound in acrylics shall be determined by time of flight reflection technique with an ultrasonic echoscope. The measurements are done, by reflection method, on three cylinders of different length. Two measurement series are carried out with ultrasonic ...
A computer-controlled scanner is used to make a B scan of a test body using two probes of different frequency (1 MHz and 2 MHz) and various locating resolutions. A comparison is then made between the effects on the resolution capabilities.
First an explanation of image generation using the CT algorithm is given. An attenuation and sound speed tomogram is then made on a simple test object and any differences are then discussed.
This set-up shows how blood flow studies are performed using Doppler ultrasound (Doppler sonograph). On a realistic arm dummy, the differences between continuous (venous) and pulsating (arterial) flow are shown as well as the difference in flow through a normal bloo ...
Using a simple heart model, the wall motion is recorded with the ultrasonic time motion method (M-mode or also TM-mode). The heart rate and the cardiac output (CO) are determined from the recorded TM-mode curve.
Tasks
This experiment shows a typical application of ultrasounds in medical diagnostics. On a realistic breast dummy is a benign tumour which has to be diagnosed, localized and measured with an ultrasound cross section imaging method.
This experiment shows a typical application of A-scan ultrasound biometry in medical diagnostics for ophthalmology. On the eye dummy the different parts of an eye can be identified and the time of flight is measured in each part so that the different dimensions in t ...
PHYWE presents the new x-ray unit: innovative technology, top safety, maximum comfort!
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