Fraunhofer - Study guides, Class notes & Summaries

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...

SPI Practice Test 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 increases penetration c. causes...

what is a transducer? - Answer- anything that converts one form of energy to another form of energy what does an ultrasound transducer do? - Answer- converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? - 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? - Answer- Lead ziconate titanate...

Sonography Canada CORE (Physics) Questions With accurate Answers(Latest Update 2023)what is a transducer? -ANSWER anything that converts one form of energy to another form of energy what does an ultrasound transducer do? -ANSWER converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? -ANSWER if a crystal is heated beyond the curie point (360 degrees for PZT) the crystal can lose piezoelectric effects what material is t...

Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - Answer- d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - Answer- 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 lat...

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 equipment? - Answer DICOM The spatial length - Answer usually decreases with higher frequency Axial resolution is improved by - Answer damping Lateral resolution is improved by - Answer decreased The beam of an unfocused transducer diverges - Answer i...

what is a transducer? -ANSWER anything that converts one form of energy to another form of energy what does an ultrasound transducer do? -ANSWER converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? -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? -ANSWER Lead ziconate titanate (PZT) ...

____________ have provided geologists with the best estimate of the maximum temperature at the mantle/core boundary. - Experimental studies on the melting of pure iron a geothermal gradient is the rate of change in the ______________ with depth. - temperature A planetary body must eventually lose all of its heat out of its surface to space by the process of - radiation All ring systems of the outer planets lie within the ___________________________ limit of the host planet. - Roche Basalt...

SPI Mock Exam (2024) || Complete Questions & Answers (Graded A+) SPI Mock Exam (2024) || Complete Questions & Answers (Graded A+) The mechanical index predicts the likelihood of: A. Cavitation B. Aliasing C. Turbulence D. Doppler shift E. Thermal damage - ANSWER - A. Cavitation Mirror imaging artifact is a result of a(n): A. A weak reflector B. Strong reflector C. Impedance difference D. Weak attenuation structure E. Strong attenuating structure - ANSWER - B. Stro...

Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution correct answers d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing correct answers 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 a...