Depth of ultrasound - Study guides, Class notes & Summaries

ARDMS,SPI Exam (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A Q: Multiple echoes, equally spaced originating from a gas bubble is called: a. comet tail b. ring down c. slice thickness artifact d. multipath Answer: b. ring down Q: An increase in red blood cell velocity will_____ the Doppler Shift: a. increase b. decrease c. not change d. cannot be predicted Answer: a. increase Q: The primary advantage of CW Doppler is: a. ...

COA Study Guide Questions and Answers 100% Verified BIOMETRY (3%) Axial length is provided by which measurement? A) Precorneal tear film to the posterior vitreous face B) Anterior corneal surface to the macula C) Anterior corneal surface to the optic disc D) Anterior pole to the posterior pole C) Anterior corneal surface to the optic disc BIOMETRY (3%) How are ultrasound biometric measurements obtained? A) The anterior lens spike should be lower than the posterior lens spike. ...

transducer Electronic pulses from the pulser are applied to the ? amplification, compensation, compression, and demodulation What functions are preformed by the receiver? the ratio of the maximum to the minimum intensity that can be displayed The dynamic range of an ultrasound system is described as? frequency divided by bandwidth How is the QF of a transducer determined? PZT The most common man-made crystal is : travel time and speed Which variables must be known in order to calculat...

Depth of UV -:- superficial 1-2 mm (skin) Depth of Infrared -:- superficial 8-10 mm (vascular) Depth of Microwave Diathermy -:- deep Depth of Shortwave Diathermy -:- deep Depth of Ultrasound -:- deepest! 2 | P a g e | G r a d e A + | 2 0 2 4 / 2 0 2 5 Excel! 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain 4-8 cm Best Modality for Herpes Zoster -:- UV and ultrasound Best modality for Diabetes Mellitus -:- Infrared If open growth centers, ...

SPI 2025 Guaranteed A+ What is the effect of decreasing the transducer frequency on image quality? ️️Decreasing the transducer frequency improves penetration depth but reduces image resolution, making it better for imaging deeper structures. How does beam width impact lateral resolution? ️️Narrower beam width improves lateral resolution by providing clearer detail of structures located side by side. What causes acoustic shadowing, and how does it appear on an ultrasound ima...

Which is described as the ability of an object to resist compression and relates to the harness of a medium a stiffness b density c pressure d inertia a Stiffness An increase in PRF would lead to a an increase in DF b a decrease in PD c an increase in the number of cycles d decrease in resolution a an increase in DF Which of the following would have the highest propagation speed a air b bone c soft tissue d water b bone As imaging depth increases, PRF must: a...

URR Questions review Questions with correct Answers What can be done to reduce the Mechanical Index level during an exam? A. reduce output power B. decrease probe frequency C. increase the threshold setting D. use contrast materials on the exam A.) reduce output power All of the following statements are true regarding equipment preparation for beginning an ultrasound exam, except? A. In order to reduce exam time, the proper exam preset must be used for each exam. B. Adjust the h...

SPI Exam Review Questions And Answers (Updated And Verified) Ultrasound imaging type in which pulses are reflected and used to produce a display - answerpulsed wave brightness of the dots on image - answeramplitude round-trip travel time per cm in soft tissue - answer13 microseconds A line produced on a display that represents ultrasonic echoes returning from the body. A sonographic image is composed of many such lines. - answerscan line Type of image presented in a rectangular format. ...

Destructive vs constructive interference - ️️Constructive interference occurs when two waves overlap at the same location at the same point in time ( in phase) and the new combined wave has an amplitude greater than the original two waves. Destructive interference occurs when the waves are out-of-phase and the amplitude of the new wave is less than one of the original waves What is dynamic frequency tuning? - ️️A pulse from a transducer contains a wide range of frequencies (broad b...

ARDMS SPI STUDY GUIDE ALREADY VERIFIED A+ How does harmonic imaging improve image quality? ️️Harmonic imaging reduces artifacts by using higher harmonic frequencies, which produce clearer, more detailed images than fundamental frequencies. What is the primary cause of side lobe artifacts? ️️Side lobe artifacts result from unwanted sound beams emitted at angles outside the main beam, potentially causing misleading echoes on the image. How does adjusting dynamic range affect ...