ARRT- Ultrasound Review Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

ARRT- Ultrasound Review Questions and Answers | Latest Version | 2025/2026 | Correct & Verified What is the main advantage of using high-frequency transducers in ultrasound? Better spatial resolution for superficial structures Which ultrasound mode displays motion of structures over time? M-mode Which artifact appears as a series of parallel lines deep to a strong reflector? Reverberation artifact What term describes the return of the ultrasound beam after hitting a tissue interface? Echo Which ultrasound principle explains why fluid appears anechoic? Fluids do not reflect sound waves significantly 2 What type of transducer is commonly used for abdominal imaging? Curvilinear transducer Which factor primarily affects axial resolution in ultrasound? Frequency of the transducer Which structure in the liver is best visualized with Doppler ultrasound? Hepatic vessels What is the primary use of color Doppler in vascular imaging? To assess direction and velocity of blood flow Which ultrasound artifact creates an incorrect depth appearance of structures? Refraction artifact What is the purpose of time-gain compensation (TGC)? To adjust brightness at different depths for uniform image intensity 3 Which artifact occurs when sound travels through a gas-filled structure? Shadowing Which ultrasound mode is ideal for cardiac valve motion evaluation? M-mode What is the recommended patient preparation for a RUQ abdominal ultrasound? Fasting for 6–8 hours to reduce bowel gas Which factor primarily determines the lateral resolution of an ultrasound image? Beam width Which Doppler principle allows measurement of blood flow velocity? The Doppler shift Which ultrasound artifact produces a false echo distal to a strong reflector? Mirror image artifact 4 What is the typical appearance of a simple cyst on ultrasound? Anechoic with posterior acoustic enhancement Which ultrasound imaging plane divides the body into anterior and posterior portions? Coronal plane Which type of Doppler displays velocity as a waveform over time? Spectral Doppler Which imaging technique is most sensitive for detecting gallstones? Real-time B-mode ultrasound What does hyperechoic mean in ultrasound terminology? Tissue appears brighter than surrounding structures Which ultrasound artifact occurs when sound bends around a curved structure? Refraction 5 Which imaging plane divides the body into left and right halves? Sagittal plane Which factor decreases ultrasound penetration but increases resolution? Higher frequency Which ultrasound artifact produces false echoes distal to fluid collections? Posterior enhancement Which transducer is commonly used for transvaginal imaging? Endocavitary probe What is the main limitation of ultrasound in imaging obese patients? Reduced penetration due to increased tissue thickness Which structure produces a posterior acoustic shadow on gallbladder imaging? Gallstone 6 Which type of Doppler evaluates the presence of turbulence in blood flow? Color Doppler Which artifact appears as a ring-down from air bubbles? Ring-down artifact What is the normal appearance of the renal cortex on ultrasound? Homogeneous and moderately echogenic Which technique improves visualization of the appendix in children? Graded compression Which ultrasound artifact causes a duplication of structures at different depths? Comet-tail artifact What is the normal ultrasound appearance of the thyroid gland? Homogeneous and slightly hyperechoic relative to surrounding muscle 7 Which ultrasound mode is most useful for measuring