Online Access Free SPI Practice Test

Which type of display process rescans only the region of interest and improves resolution?

• A.Spatial compounding
• B.Read magnification
• C.Frequency compounding
• D.Write magnification

What device is used to determine axial resolution?

• A.Hydrophone
• B.Beam profiler
• C.Tissue-mimicking phantom
• D.Doppler phantom

Which target group is used to evaluate transverse distance measurement accuracy in this tissue-mimicking phantom image?

• A.Option D
• B.Option C
• C.Option B
• D.Option A

Which technique averages individual frames together to improve the image?

• A.Coded excitation
• B.Compression
• C.Persistence
• D.Harmonic imaging

What artifact is indicated by the arrows in the image below?

• A.Ring down
• B.Enhancement
• C.Grating lobe
• D.Refraction