What is the wavelength when the propagation speed is 1.5 mm/µs and the transducer frequency is 5.0 MHz?

Study for the Sonography Principles and Instrumentation (SPI) Ultrasound Registry Test. Utilize flashcards and multiple choice questions with hints and explanations. Prepare efficiently for your exam!

To determine the wavelength in ultrasound, the formula used is:

[ \text{Wavelength} = \frac{\text{Propagation Speed}}{\text{Frequency}} ]

In this scenario, the propagation speed is given as 1.5 mm/µs and the frequency is 5.0 MHz. First, it's important to convert the units to be consistent. Since 1 MHz is equal to 1,000,000 Hz, the frequency in Hz can be expressed as:

[ 5.0 , \text{MHz} = 5.0 \times 10^6 , \text{Hz} ]

Now, plugging the values into the wavelength formula:

[ \text{Wavelength} = \frac{1.5 , \text{mm/µs}}{5.0 \times 10^6 , \text{Hz}} ]

Since 1 µs is (10^{-6}) seconds, the propagation speed can also be expressed as:

[ 1.5 , \text{mm/µs} = 1.5 , \text{mm} \times 10^6 , \text{µs/s} =

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