Attenuation coefficient Study guides, Revision notes & Summaries

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...

IRRSP Practice Test graded A+ TO PASS The activity of a radioactive source - correct answer The term "Curie" defines: a. The exposure of a radioactive source b. The intensity of a radioactive source c. The activity of a radioactive source d. The output of a radioactive source Reddening of the skin, loss of hair, blistering - correct answer Which of the following are symptoms of an acute extremity overexposure? a. Nausea, vomiting, diarrhea b. Fatigue, nausea, reddening of the skin c...

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...

The appropriate personnel protective equipment for the care of a patient with suspected TB would be: CORRECT ANSWER respiratory mask The TD5/5 for the whole brain is: CORRECT ANSWER 45 Gy in 25 fx The histopathological type found most commonly in the neck is: CORRECT ANSWER squamous cell carcinoma The transporter of oxygen in the blood is the: CORRECT ANSWER hemoglobin The linear attenuation coefficient (µ) is expressed in: CORRECT ANSWER 1/cm Arrange the following X-ray energies...

What is the smallest component of a digital image CORRECT ANSWER pixel How many CT numbers are assigned to each pixel in the image matrix? CORRECT ANSWER One In a CT image, the CT number CORRECT ANSWER Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a CORRECT ANSWER pixel What is an element of the digital image CORRECT ANSWER pixel Which of the following influences the spatial resolution in ca...

What is the smallest component of a digital image - correct answer pixel How many CT numbers are assigned to each pixel in the image matrix? - correct answer One In a CT image, the CT number - correct answer Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a - correct answer pixel What is an element of the digital image - correct answer pixel Which of the following influences the spat...

Sonography Canada Core Review Exam 2023. f - ANSWER v/wavelength frequency - ANSWER number of cycles per second T - ANSWER 1/f Period - ANSWER length of time for one cycle 1540 m/s - ANSWER speed of sound in soft tissue infrasound - ANSWER <20Hz audible sound - ANSWER 20Hz-20,000Hz ultrasound - ANSWER >20,000Hz c - ANSWER = root (bulk modulus/density) or =stiffness/density bulk modulus - ANSWER stress/strain I - ANSWER = P/a P - ANSWER = E/T Amplitude - ANSWER maximum deviat...

The heat capacity of a CT x-ray tube anode (kJ) is most likely: a. 0.4 b. 4 c. 40 d. 400 e. 4,000 correct answer: Answer (e) The typical anode heat capacity of a modern CT x-ray tube anode is 4,000 kJ (4 MJ) The power (kW) applied to a modern CT x-ray tube is most likely: a. 1 b. 3 c. 10 d. 30 e. 100 correct answer: Answer (e) The most common power level in CT today (2008) is 100 kW Beyond the depth of maximum dose, which statement best describes the relative behavior of dose...

What is the smallest component of a digital image - Answer pixel How many CT numbers are assigned to each pixel in the image matrix? - Answer One In a CT image, the CT number - Answer Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a - Answer pixel What is an element of the digital image - Answer pixel

f - v/wavelength frequency - number of cycles per second T - 1/f Period - length of time for one cycle 1540 m/s - speed of sound in soft tissue infrasound - <20Hz audible sound - 20Hz-20,000Hz ultrasound - >20,000Hz c - = root (bulk modulus/density) or =stiffness/density bulk modulus - stress/strain I - = P/a P - = E/T Amplitude - maximum deviation from normal A - = max-normal A^2 - proportional to intensity and power PRP - = 1/PRF line tim...