Scattering is defined as - Study guides, Class notes & Summaries

SPL wavelength x # of cycles With phased array transducers, the transmitted sound beam is steered by Varying the timing of pulses to the individual piezoelectric elements What type of wave is sound? mechanical and longitudinal The Frequency ranges for Ultrasound are: > 20,000 Hz (20kHz) The speed of sound in soft tissue is: 1540 m/s Linear sequence Array transducer that fires the elements in groups Unit for Wavelength is millimeters Enha...

List the two types of multimode fiber - Answer graded index and step index List the core and cladding sizes for the US and European standards of graded index fiber - Answer 62.5/125 and 50/125 microns List the two wavelengths used in multimode fiber - Answer 850 and 1300 nanometers What type of dispersion is found in multimode fibers? - Answer modal List two types of intrinsic attenuation - Answer absorption and scattering List the four examples of extrinsic attenuation - Answer m...

What is the correct term used to describe an intravenous injection of a concentrated volume of contrast media? a. bolus b. infusion c. extravasation d. luminal - ANSWER-a. bolus Which of the following methods utilizes a detector that captures x-ray energy and converts it into an electronic signal? a. indirect capture b. CCD c. cassette based radiography d. direct capture - ANSWER-d. direct capture The energy of a characteristic x-ray photon created when an L shell electron fills a...

Test Bank on Essentials of Dental Radiography 9th EditionBy Evelyn Thomson,Orlen JohnsonChapter 1 Multiple Choice 1. Who was awarded the first Nobel Prize for physics in 1901, for his experimental work with radiation? 2. W. J. Morton 3. O. Walkhof 4. W. D. Coolidge 5. W. C. Roentgen 6. Who is credited with introducing the bitewing radiograph? 7. F. W. McCormack 8. H. R. Raper 9. G. M. Fitzgerald 10. C. E. Kells 11. Who developed the hot cathode ray tube? 12. W. D. Coolidge 13. W. A. Price 14. H...

ARDMS Breast Registry Review Exam 503 Questions with Verified Answers Artifact - CORRECT ANSWER An echo feature present or absent in a sonographic image that does not correspond to the presence or absence of a real structure. Eg. enhancement or shadowing. Attenuation - CORRECT ANSWER The reduction of intensity (and amplitude) of a sound wave as it travels through a material. Attenuation is due to absorption, reflection, and scattering. Complex - CORRECT ANSWER A structure in the body ...

Suas Safety Certification level 1 practice Exam Questions With Verified Answers The ________ of the unmanned aircraft contains most of the equipment and acts as the basic structure. - answerFuselage The payload operator and Remote Pilot in Command (RPIC) work together to get the best imagery. - answerTrue To keep an electromechanical device mounted on an aerial platform so that the sensor is pointed in the same general direction, regardless of the attitude (pitch, roll, yaw) of the platfo...

What is meant by matter? Anything that occupies space and has weight What are the three basic physics states in which matter can exist? Solid, liquid, and gas What is meant by pressure? Force that acts on a unit of area What is the standard sea level atmospheric pressure express in inches of mercury and in pounds per square inch 29.92 inches of mercury and 14.69 pounds per square inch What characteristic of the atmosphere determines the speed of sound? Its temper...

What is Law? Rules of civil commanding what is right and prohibiting what is wrong Blackstones definition. What is mortuary law? Branch of llaw which relatesw to matters concered woth disposal of the dead Rules and principles that society has established for handling and disposition of the dead(Text ) Stueve/ Gulligan Also know as Mortuary Jurisprudence- Funeral servic- Funeral law Common Law non legislated principles and rules of action. Predicated upon usage and cus...

American Recovery and Reinvestment Act (ARRA) - **Authorized INCENTIVE PAYMENTS to specific types of hospitals & healthcare professionals for adopting & using interoperable Health Information Technology and EHR's. The purposes of this act include the following: (1) To preserve/create jobs and promote economic recovery. (2) To assist those most impacted by the recession. (3) To provide investments needed to increase economic efficiency by spurring technological advances in science and health....

SPI ULTRASOUND REGISTRY REVIEW QUESTIONS AND ANSWERS GRADED A SPL wavelength x # of cycles With phased array transducers, the transmitted sound beam is steered by Varying the timing of pulses to the individual piezoelectric elements What type of wave is sound? mechanical and longitudinal The Frequency ranges for Ultrasound are: > 20,000 Hz (20kHz) The speed of sound in soft tissue is: 1540 m/s Linear sequence Array transducer that fires the elements in groups Unit for Wavelength is mill...