Attenuation - Study guides, Class notes & Summaries

ARDMS SPI STUDY GUIDE QUESTIONS AND ANSWERS ALREADY PASSED In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in Hertz (Hz) is Cycles per Second Not affected by sonographer Increase Frequency; Decrease Depth A period is the length of time it takes for one complete wavelength to pass a fixed poin...

Progression: Construction Coordinator I - II Exam Answered Correctly. A chain trencher A return path sweep-and-alignment system is used to adjust which of the following? Anomalies, such as echoes and blind spots, can hide cable faults or cause a technician to misinterpret the signature of a time domain reflectometer (TDR) waveform. What causes an echo on a waveform TDR? As the RF signal travels on the coaxial cable, one portion of the signal may be attenuated more than the others. ...

Edelman SPI review questions & Answers 2023. ______ is the distance covered by one cycle. a) pulse length b) wavelength c) cycle distance d) cycle duration ______ is the time to complete one cycle a) pulse duration b) pulse period c) period d) duration period ________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: a) refraction b) Rayleigh Scattering c) scattering d) reflection _________ resolution is...

CT Registry Review (MIC) Exam Test with complete solutions In order for an x-ray photon to be measured it must: Which system component converts the projection attenuation data into the proper digital form for the array processor? Which of the following is NOT a function of a PACS system? Which of the following is not part of the CT tube? Which of the following is FALSE regarding CT systems? Xrays are used in CT because: Most of the commands from the technologists are received...

What type of current is required for proper operation of the x-ray tube? - Direct Electromagnetic radiation travels: - In waves along a straight path Frequency is defined as: - The number of waves passing a point per unit time Wavelength is defined as the distance from: - Peak to peak of the wave Wavelength and frequency are: - Inversely proportional to each other The x-ray beam changes as it travels through the patient by a process called: - Attenuation The intensity of radiation is inver...

SPI ARDMS EXAM |Q & A |ALREADY GRADED A+ |2024 UPDATE What type of wave is sound? Correct Ans ~ mechanical and longitudinal The frequency ranges for ultrasound are: Correct Ans ~ >20 kHz The speed of sound in soft tissue is: Correct Ans ~ 1540 m/s which of the following transducers fires the elements in groups? A. Linear sequenced array B. Phased array C. Continuous-wave transducer D. Single-element transducer Correct Ans ~ A Enhancement is caused by** Correct Ans ~ weakly attenuati...

INSY-3303 FINAL EXAM STUDY GUIDE WITH COMPLETE SOLUTIONS Access Point - Answer- The computer or network device that serves an as interface between devices and the network Application Architecture - Answer- The way in which the functions of the applications layer software are spread among the clients and servers in the network Attenuation - Answer- Loss of power in a signal as it travels from the sending device to the receiving device BN - Answer- Known as Backbone Network Routed backbon...

Progression: Maintenance Tech I - II Conventional: Exam In the tree-and-branch architecture, how is the downstream signal from the trunk fed to the distribution branches? What is a common solution when congestion from modem activity and traffic becomes unacceptable in a hybrid fiber/coax (HFC) network? What technologies are defined in DOCSIS 4.0 to help sustain the hybrid fiber/coax (HFC) network infrastructure for several more years? How can a less-experienced technician identi...

BICSI Installer 2 Technician exam Questions with elaborated answers 2024 1 - CORRECT ANSWER-KEY TERMS Choose Correct Term: 1. Attenuation, 2. Bandwidth, 3. Cable Loss, 4. Cladding, 5. Connector, 6. Dispersion, 7. Ferrule (Optical Fiber), 8. FC, 9. Furcating Harness, 10. Insertion Loss, 11. LC Connector/Adapter, 12. Multimode Optical Fiber, 13. SFF, 14. SC Definition: The decrease in magnitude or the power loss of a signal that propagates between points, expressed in decibels (dB) as ...

Weeks v. US - Answer Case law that established exclusionary rule, evidence gotten without a warrant isn't admissible in a *federal court* Lottery tickets were seized from a home without a SW Wolfe v. Colorado (1949) - Answer FEDS would go to *local* officers and make them obtain evidence because the exclusionary rule did not apply to local and state officers also known as *Silver Platter Doctrine* - was ultimately struck down Mapp v. Ohio (1961) - Answer Extended the Exclusionary Rule...