B transducer - Study guides, Class notes & Summaries

Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and increases penetration c. causes poor axial and lateral resolution ...

Which of the following factors can have a negative effect on uterine blood flow? a. Hypertension b. Epidural c. Hemorrhage d. Diabetes e. All of the above - e. All of the above Stimulating the vagus nerve typically produces: a. A decrease in the heart rate b. An increase in the heart rate c. An increase in stroke volume d. No change - a. A decrease in the heart rate The vagus nerve begins maturation 26 to 28 weeks. Its dominance results in what effect to the FHR baseline? a. Increas...

Frequencies used in transthoracic imaging are usually in the range of ____________. Frequencies used in transesophageal imaging are usually in the range of ______________. A) 3-6 MHz;6-8 MHz B) 3-6 MHz; 5-7 MHz C) 2.5-4 MHz; 5-7 MHz D) 1-3 MHz; 6-8 MHz - 2.5-4 MHz; 5-7 MHz Which of the following will aid in visualization of the endocardium? A) Increased transducer frequency B) Larger sector size C) Increased wall filter D) Agitated saline contrast - Increased transducer frequency-this ...

Which of the following adjustments will improve temporal resolution on color Doppler? A. steer the sample box B. increase the wall filter C. decrease sample size D. increase color gain - ️️C. decrease the sample size While using the same type of ultrasound system, a 5MHz continuous wave and 5MHz pulsed wave transducer are used at the same time to evaluate blood flow in the same artery. Which transducer will produce a display of the spectral tracing first? A. continuous wave B. pulse...

The main advantage of a curvilinear transducer over a vector transducer is: A. the ability to perform CW Doppler with 2D imaging B. the smaller footprint C. the wider near field D. the ability to scan at increased frame rates - the wider near field Which of the following describes the primary advantage of a 1.5D array over a 1D array? A. the 1.5D array eliminates the need for a stand-off pad for superficial imaging B. the 1.5D array can produce a trapezoid field of view while the 1D array...

SPI Practice Test Questions With 100% Correct Answers Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - ANS-d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - ANS-d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and ...

Prophecy RN B v3 When setting up a room for a new patient, what emergency equipment MUST be accessible and working at the bedside? - ANS Bag Valve mask You are on shift and overhear another nurse discussing confidential patient information on their cell phone during their break. What would be the BEST action to take? - ANS Speak with the nurse in private afterwards to remind her of HIPAA regulations What should you monitor for a patient at risk for respiratory depression...

Prophecy RN B v3 Exam Questions And Answers When setting up a room for a new patient, what emergency equipment MUST be accessible and working at the bedside? - ANS Bag Valve mask You are on shift and overhear another nurse discussing confidential patient information on their cell phone during their break. What would be the BEST action to take? - ANS Speak with the nurse in private afterwards to remind her of HIPAA regulations What should you monitor for a patient at risk for re...

____ is defined as specific area or location where Doppler shift info is being obtained. A. spectral broadening B. nyquist limit C. sample volume D. spectral window -answer- C. sample volume Spatial resolution is: A. the minimum reflector separation required to produce separate echos. B. highest with linear phased arrays. C. the weakest reflected signal the transducer can receive D. another term for slice thickness resolution -answer- A. the minumum reflector separation required to pr...

Edelman's SPI Exam Tested Questions With Revised Correct Detailed Answers With Rationales GRADED PASS 1) AMPLITUDE, POWER, & INTENSITY; What determines the initial amplitude of an ultrasound wave? A. the transducer B. the medium through which the sound travels C. both A and B D. neither choice A nor B - ANSWER the transducer; the initial strength or amplitude of a sound wave is determined by the vibration of the piezoelectric crystal in the transducer. The greate...