Exam SPI Topic 5 Question 46 Discussion

Actual exam question for ARDMS's SPI exam
Question #: 46
Topic #: 5
Which statement describes the purpose of using a spectral Doppler wall filter?

Suggested Answer: D Vote an answer

The purpose of using a spectral Doppler wall filter is to eliminate lower velocity signals. Wall filters are designed to remove low-frequency Doppler shifts caused by the motion of the vessel walls or surrounding tissues, which are generally of no diagnostic value. By eliminating these lower velocity signals, the wall filter helps to clean up the Doppler signal and reduce clutter, allowing for a clearer and more accurate display of blood flow velocities.
Reference:
ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide
"Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau

by Kay at Oct 31, 2025, 03:14 PM

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