Fraunhofer - 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 transducera. 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 d. reduces the ...

Five terms describe the shape and regions of a sound beam: - ANSWER-1. focus 2. near zone length zone or near zone length 4. far zone 5. focal zone focal point - ANSWER-The location where the beam is the narrowest Near Zone (Fresnel Zone) - ANSWER-the region or zone in between the transducer and the focus. sound beams converge in the near zone focal length - ANSWER-Distance from the transducer to the focus. the focus - ANSWER-focal point end of the near zone beginning of the f...

SPI Practice Test Questions and Answers Rated 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 p...

Sonography Canada CORE (Physics) | 2023/24 questions and answers what is a transducer? - anything that converts one form of energy to another form of energy what does an ultrasound transducer do? - converts electropotential energy into mechanical and mechanical energy into electropotential energy what is the curie point? - 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 tras...

SPI Practice Test Questions and Answers 100% Pass 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 p...

ARDMS SPI Review Exam Questions With Correct Answers Example of nonspecular reflector - ANSWER- red blood cells What happens to spatial pulse length when frequency increases? - ANSWER- decreases Axial resolution is dependent on? - ANSWER- wavelength Lateral resolution is dependent on? - ANSWER- beam diameter Where does the beam of an unfocused transducer diverge? - ANSWER- Fraunhofer zone Reverberation artifacts are a result of - ANSWER- two or more strong reflecting surfaces ...

The Digital Music Distribution Revolution - Fraunhofer let others use his innovation for MP3, Napster for free music sharing, then iTunes was restrictive Appropriability - The degree to which a firm is able to capture the rents from its innovation. Tacit Knowledge - Knowledge that cannot be readily codified or transferred in written form. Socially Complex Knowledge - Knowledge that arises from the interaction of multiple individuals. Patent - A property right protecting a process, machine, ...

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) ...

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 (PZ...

What is the Standard protocol for digital imaging that allows for compatibility and communication between computers, workstations, and network hardware provided by various manufactures of CT, MRI and Ultrasound equipment? correct answers DICOM - Digital Imaging and Communication in Medicine The spatial pulse length decreases correct answers with higher frequency Axial resolution is improved by correct answers damping ......(because it INCREASES the frequency) Think SHORT and HIGH ! Li...