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Which one of the following applies when using tissue harmonics to image the gallbladder?

Use of lower frequencies

Use of higher frequencies

Tissue harmonics is a technique used in ultrasound imaging to improve image quality by reducing noise and improving contrast resolution. This is achieved by using a second harmonic frequency, which is twice the transmitted frequency. Option A is incorrect because using lower frequencies would make it more difficult to differentiate between different types of tissue and result in lower image quality. Option C is also incorrect because tissue harmonics actually improve lateral resolution. Option D is incorrect because tissue harmonics do not increase reverberation artifacts, but rather reduce them.

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Decreased lateral resolution

Increased reverberation artifacts

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