Reduce spatial pulse length B. true or false. Pulse Duration is defined as the time that the pulse is on. The measure is typically used with electrical signals and is widely used in the fields of radar and power supplies.There are two closely related measures. true or false. On what does the pulse repetition period depend on? The imaging depth remains unchanged. Would each of the following parameters increase, decrease or remain the same? Increase the pulse duration C. Increase the operating frequency D. Increase the power: C. Increase the operating frequency: What is the best estimate of axial resolution? 1-9 exam questions at Cram.com. Which of the following four waves has the lowest pulse repetition frequency? pulse repetition period, A sonographer is using a 3 MHz transducer and increases the output power to visualize structures that are positioned deeper in the patient. The amount of time that pulsed ultrasound is actually on is the... a) pulse duration b) frame rate c) spatial pulse length d) pulse repetition frequency. The pulse repetition frequency is increased 3. It is typically measured as cycles per second or hertz (Hz).. the duty factor is a characteristic of an ultrasound and transducer system and does not change as long as the system components remain unchanged. E. The pulse repetition period is similar to the period. It covers the fundamental science, signal processing, hardware issues, systems design and case studies of typical systems. 80 us C. 8000 ns D. 800 ms: Definition. pulse transmission of random binary data Option (c) 19.The signal to quantization noise ratio in an n-bit PCM system (a) depends upon the sampling frequency employed (b) is independent of the value of ‘n’ (c) increasing with increasing value of ‘n’ (d) decreases with the increasing value of ‘n’ [GATE 1995: 1 Mark] Study pulse sequences flashcards from William Kerns's Lake Michigan College class online, or in Brainscape's iPhone or Android app. Pulse Repetition Frequence (PRF) is the number of _____ occuring in 1 second. PRP is the time from the start of one pulse, to the start of the next pulse. Pulse repetition period (PRP): Time from the beginning of one pulse to the beginning of the next. Would each of the parameters increase, decrease or remain the same? The pulse duration is longer than the pulse repetition period. This answer has the highest pulse repetition frequency and, thus, the shortest pulse repetition period. Period : Pulse Repetition Period (PRP) _____ as PRF INCREASES. To understand how an image on the screen of an ultrasound system is produced, it is necessary to examine the features of a transducer and the ultrasound beams that it creates and receives. We report on the experimental observation of the period doubling of multiple dissipative-soliton-resonance (DSR) pulses in an all-normal-dispersion fibre laser, based on a nonlinear amplifying loop mirror. intensity, A sonographer is using a 3MHz transducer and changes to a 6 MHz transducer. Would PERIOD increase, decrease, or remain the same? In radar, a radio signal of a particular carrier frequency is turned on and off; the term "frequency" refers to the carrier, while the PRF refers to the number of switches. Pulse duration does not change with depth, thus it cannot be changed by the sonographer. Study Flashcards On Ultrasound Physics chapt. False Term: While using the same ultrasound machine and transducer, which of the following can a sonographer alter? Would each of the following parameters increase, decrease or remain the same? Time of the pulse / listen time C. Time of one cycle in the transmitted pulse D. Time to receive echo from the depth of the scan range : B. 1. period 2. number of cycles in the pulse. Would each of the parameters increase, decrease or remain the same? Four waves have pulse repetition periods as listed below. Amplitude, A sonographer adjusts the depth view of an ultrasound scan from 8 cm to 16 cm. Our online ultrasound physics trivia quizzes can be adapted to suit your requirements for taking some of the top ultrasound physics quizzes. T or F: the sonographer cannot change the duration of a sound pulse unless the transducers are switched. 80 µs. B. T or F: A sonographer can adjust the duration of an acoustic pulse since it depends on the pulses propagation speed? 1. the pulse duration of an ultrasound and transducer system does not change significantly as long as the system components remain unchanged, the pulse duration is expressed in the same units as the, true or false, a sonographer can adjust the duration of an acoustic pulse since it depends upon the pulse's propagation speed, true or false, a sonographer can adjust the duration of an acoustic pulse since it depends upon the maximum imaging depth, true or false, the sonographer cannot change the duration of a sound pulse unless the transducers are switched, d. period multiplied by the number if cycles in the pulse, what happens to the pulse duration when a sonographer decreases the maximum imaging depth in an ultrasound scan, the spatial pulse length describes certain characteristics of an ultrasound pulse, what are its units, in diagnostic imaging, what determines the spatial pulse length, which of the following best describes the spatial pulse length, c. wavelength multiplied by the number of cycles in the pulse. 1/seconds. speed, A sonographer adjusts the depth view of an ultrasound scan from 8 cm to 16 cm. 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