Davies Breast ARDMS (All correctly answered)
Which artifact may cause structures to look deeper than they actually are? A. Side lobe B. Shadowing C. Refraction D. Propagation speed error E. Slice thickness correct answers D. propagation speed error The optimum operating frequency for a broad-bandwidth transducer would be: A. 6 MHz B. 7 MHz C. 8 MHz D. 9 MHz E. 10 MHz correct answers C. 8 In breast sonography, which of the following is NOT significantly affected by the limited field of view when imaging superficial structures? A. Contrast resolution B. Spatial resolution C. Axial resolution D. Lateral resolution E. Temporal resolution correct answers E. temporal resolution Which of the following affects the actual intensity of the sound utilized for imaging? A. TGC B. Output power C. Overall gain D. Dynamic range E. Harmonics correct answers B. output power The dynamic range of a display is the: A, Number of gray shades B. Depth of focal zone C. Intensity of sound utilized D. Image scale E. Output power correct answers A. number of gray shades 6. Using color/power Doppler while a patient hums to better delineate a mass is called: A. Aliasing B. Spectral mirroring C. Ring-down D. Harmonics E. Fremitus correct answers E. fremitus
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