Fraunhofer - Study guides, Class notes & Summaries

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...

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 ...

SPI MOCK Exam | Questions and Correct Answers | Latest Update 2024/2025 Reducing the likelihood of bioeffects from acoustic energy is the mission of the: A. Nyquist limit B. Reynolds number C. Huygens principle D. ALARA principle E. Poiseuille principle D. ALARA principle The number of cycles in a pulse directly related to the: A. Duty factor B. SPL C. operating frequency D. PRF E. propagation speed of the medium B. SPLThe Doppler shift frequency is proportional to the: A. Cosi...

Calorimetry - Answer-science of measuring heat Calculate amount of energy released using E=mc(dT) - Answer-Energy released= (mass of water heated)x(specific heat of water)(temp. change) specific heat=1.0 cal/gC 1 Cal=1000 cal What is meant by small calorie "c" and food calories "C"? - Answer-"c" is a scientific calorie which is the energy required to rise the temp of 1 gram of water by 1C "C" is 1000 scientific calories-Food Calories When walking, an average person burns 0.453 Food...

SPI Practice Exam New Questions with 100% Correct Answers Already Graded A+ 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 incr...

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

SPI mock exam questions & answers 2023/2024 Reducing the likelihood of bioeffects from acoustic energy is the mission of the: A. Nyquist limit B. Reynolds number C. Huygens principle D. ALARA principle E. Poiseuille principle - ANSWER-D. ALARA principle The number of cycles in a pulse directly related to the: A. Duty factor B. SPL C. operating frequency D. PRF E. propagation speed of the medium - ANSWER-B. SPL The Doppler shift frequency is proportional to the: ...

SPI Mock Exam Verified Solutions Reducing the likelihood of bioeffects from acoustic energy is the mission of the: A. Nyquist limit B. Reynolds number C. Huygens principle D. ALARA principle E. Poiseuille principle D. ALARA principle The number of cycles in a pulse directly related to the: A. Duty factor B. SPL C. operating frequency D. PRF E. propagation speed of the medium B. SPL The Doppler shift frequency is proportional to the: A. Cosine values B. Dopp...

form of energy to another form of energy what does an ultrasound transducer do? correct answer: converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? correct answer: if a crystal is heated beyond the curie point (360 degrees for PZT) the crystal can lose piezoelectric effects what material is traditionally used for ultrasound trasnducers? correct answer: Lead ziconate titanate (PZT) what are modern transducers ...

what improves temporal resolution -answer- low line density, high frame rate, narrow sector line, fewer pulse per frame which of the following is true when the dynamic aperature is increased -answer- near zone length increases Which of the following is the standard protocol for digital imaging that allows compatibility and communication between computers, workstations, and network hardware provided by various manufacturers of CT, MRI, and ultrasound -answer- DICOM the beam of an unfocus...