Ultrasound physics - Study guides, Class notes & Summaries

SPI Ultrasound Physics Review Exam - Questions and Answers Relates to likelihood of harmful bio effects from cavitation Mechanical index Predicts maximum temperature increase Thermal index Measures output intensity of the beam Hydrophone Region of increased brightness due to higher intensities in focal zone Focal banding Occurs when sound travels through a medium with a lower attenuation rate than the surrounding tissue Enhancement Beam travels through an area of high attenuation Shadowing Bea...

- greatest contributor to attenuation in tissues - Potential source of bio-effects (discussed later) acoustic speckle - noise resulting from the constructive and destructive interference of small sound wavelets -grainy appearance Amplitude - -For a wave or vibration, the maximum displacement on either side of the equilibrium (baseline) position. - positive amplitudes (above baseline) and negative amplitudes (below baseline) -units that are appropriate to the acoustic variable considered ...

ARDMS Ultrasound Physics & Instrumentation Exam (2023/24) || Questions & Answers (Rated A+) ARDMS Ultrasound Physics & Instrumentation Exam (2023/24) || Questions & Answers (Rated A+) Which of the following is defined as only the active time? - ANSWER - Pulse duration The inertia of the medium describes its: - ANSWER - Density Which of the following is determined by the sound source only? - ANSWER - Frequency What is the total amount of attenuation that occurs if a 6.0-MHz sound ...

Ultrasound Physics - Mock Exam Questions for SPI | Questions and Correct Answers | Latest Update 2024/2025 Which of the following transducers will have the worst axial resolution? a. Vector array, 3 MHz b. Linear Sequential Array, 6 MHZ c. Linear Phased Array 7.5 MHZ d. Annular Array, 6 MHz - Answer -Vector array, 3 MHz A sound wave is traveling in the body and propagates from muscle to air. What percentage of the sound wave is most likely reflected at the muscle-air boundary? a. 0....

During performance of an obstetric ultrasound exam, you adjust the system parameters to improve the image. Which of the following parameters would increase acoustic exposure? A. Increase receiver gain B. Increase TGC C. Increase frequency D. Increase transmit power E. Increase frame averaging (persistence) - Increase transmit power To minimize the risk of biologic effects of ultrasound to the fetus, which imaging mode tradeoff would be most applicable? - Use M-mode instead of pulsed-wave...

Meaning of Anechoic? - Dark, less echos. Meaning of Echogenic? - Full of echoes. Meaning of Hyperechoic? - More echoes than adjacent tissue. Meaning of Hypoechoic? - Less Echoes than adjacent tissue. Meaning of Isoechoic? - Similar/same echoes than adjacent tissue. Meaning of Homogenous? - Uniform Texture. (smooth) Meaning of Heterogenous? - Different levels of echogenicity. Definition of Wavelength? - The length of one cycle. -Denoted by (Lamda)

Two principles of operations: - Principle 1 of operations - Principle 2 of operations Principle 1 of operations: -The ultrasound machine operates and presents the information on the monitor. -There is a one-to-one correspondence between transmitting a pulse into the body and the echoes returning from that pulse and presenting it as a visible dot developing a scan line (one pulse at a time). Principle 1 of Operation: Repeating this ___________ times, would produce a single image...

Ultrasound Physics: SPI Review, ALL Chapters, Formulas & Relationships Comprehensive Guide.

ULTRASOUND PHYSICS: TEST 1 REVIEW QUESTIONS

Edelman Understanding Ultrasound Physics Exam Review | Questions and Correct Answers 2024/2025