Attenuation coefficient - 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...

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...

The word Tomo is tomography means - correct answers To cut What is the Z-axis - correct answers the thickness of a cross-sectional slice. The degree to which an x-ray beam is reduced by an object is referred to as - correct answers Attenuation The amount of the x-ray beam that is absorbed per unit thickness of the absorber - correct answers Linear Attenuation difference in linear attenuation coefficient is responsible for - correct answers Image Contrast These are the two dimensio...

Mosby CT Registry Review Questions and Answers 2024 What is the smallest component of a digital image pixel How many CT numbers are assigned to each pixel in the image matrix? One In a CT image, the CT number 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 pixel What is an element of the digital image pixel Which of the following influences the spatial resolution in...

What is the smallest component of a digital image - correct answers pixel How many CT numbers are assigned to each pixel in the image matrix? - correct answers One In a CT image, the CT number - correct answers 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 answers pixel What is an element of the digital image - correct answers pixel Which of the following influences the spatial r...

The Lisfranc joint is the articulation between the: A. Tarsals and metatarsals B. Metatarsals and lower leg C. Proximal and middle phalanges D. Metatarsals and middl phalanges - ️️A. Tarsals and metatarsals The longitudinal dimension of the voxel corresponds to the _______ of scanning A. x axis B. y axis C. z axis - ️️C. z axis The mAs value for a given acquisition is directly proportional to ______ ____ and inversely proportional to _____ ________ A. Image noise, patient...

CT REGISTRY STUDY GUIDE QUESTIONS WITH CORRECT ANSWERS FOR GARANTEED PASS What determines how much and what section of the collected raw data is used to create an image - Correct Answer Display field of view The "string of beads" artifact is most closely associated with which of the following? - Correct Answer Maximum intensity projection images A patient has a severe vagal reaction to iodinated contrast material that includes bradycardia should be given a treatment of - Correct Answer ...

Mosby CT Registry Review Questions with 100% Verified Correct Answers 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 - Corre...

Absorbed dose the amount of energy absorbed per unit mass (grays or rads) back projection - 3rd step in IR loop of iterative reconstruction algorithm - ray sum data are projected back onto a matrix. blood urea nitrogen (BUN) renal function (nitrogen in blood) (7-25mg/dl) bow-tie filter Filter compensating for a cylindrical shape (body) -filter is thicker at the ends contiguous images images with equal section thicknesses & reconstruction intervals Alia...