ARDMSSPIEXAM2025/2026–LATEST
VERSION
Verified Questions and Correct Answers | GRADED A+ 1 / 3
1EXAM OVERVIEW
The ARDMS Sonography Principles Instrumentation (SPI) Exam evaluates the knowledge and skills required to operate ultrasound equipment safely and effectively, ensuring high- quality diagnostic imaging.
Key Details:
•Exam Title: Sonography Principles & Instrumentation (SPI)
•Testing Body: American Registry for Diagnostic Medical Sonography (ARDMS)
•Edition: 2025/2026 – Latest
•Content Domains Covered:
–Physical Principles of Ultrasound –Ultrasound Instrumentation –Doppler Imaging Concepts –Quality Assurance and Bioeffects –Pulse-Echo Instrumentation –Artifacts
•Question Types: Multiple Choice
•Exam Purpose: To certify competency in ultrasound principles for diagnostic medical sonographers.
•Format: Computer-based, timed, proctored testing with randomized questions.
Candidates should focus on understanding ultrasound physics, Doppler principles, and equip- ment operation to excel.
2EXAM QUESTIONS AND CORRECT ANSWERS
2.1QUESTION 1
What is the primary source of ultrasound wave generation in diagnostic imaging?A.Piezoelectric crystal B.Magnetic coil C.Laser diode D.Thermal emitter
Correct Answer:A. Piezoelectric crystal
Rationale: Piezoelectric crystals convert electrical energy into mechanical vibrations to pro- duce ultrasound waves.
2.2QUESTION 2
Which of the following will increase the frame rate in real-time imaging?A.Increasing the sector width
1 2 / 3
B.Decreasing the imaging depth C.Using multiple focal zones D.Increasing line density
Correct Answer:B. Decreasing the imaging depth
Rationale: Shallower imaging requires fewer scan lines per frame, increasing frame rate.
2.3QUESTION 3
What is the typical frequency range for diagnostic ultrasound?A.0.1–1 MHz B.2–15 MHz C.20–50 MHz D.100–200 MHz
Correct Answer:B. 2–15 MHz
Rationale: Diagnostic ultrasound typically operates in the 2–15 MHz range for optimal penetration and resolution.
2.4QUESTION 4
Which artifact appears as a shadow behind a highly reflective structure?A.Reverberation B.Acoustic shadowing C.Mirror image D.Side lobe
Correct Answer:B. Acoustic shadowing
Rationale: Acoustic shadowing occurs when ultrasound waves are blocked by a highly reflec- tive or attenuating structure.
2.5QUESTION 5
What does the Doppler effect measure in ultrasound imaging?A.Tissue density B.Blood flow velocity C.Image resolution D.Sound wave intensity
Correct Answer:B. Blood flow velocity
Rationale: The Doppler effect detects frequency shifts to measure the velocity of moving blood cells.
- / 3