Attenuation Study guides, Class notes & Summaries

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...

If you have attenuation of wave V of BAERs that persists until closing, what is the most likely cause? - Retraction of the cerebellum What is the most important setting when establishing baseline BAER data? - Side of ear stimulation When opening posterior fossa, what is the most likely cause for the attenuation of wave I of BAERs? - Drilling cranium When opening posterior fossa, what is the most likely cause for the attenuation of wave I of BAERs? - Drilling cranium A lab calibrated their...

An in depth summary of the "Biomedical Imaging (BMs23 course)". This summary contains all material discussed in the course and you should easily pass the exam using this. In addition, this summary can be used outside this course for a clear and complete description of MRI, ultrasound, PET, SPECT, X-ray, CT, and mammography, as well as the mechanisms behind them. See the content list for the complete overview. Some important concepts that are described are: fluorescence, tomosynthesis, t1, t2, t2...

Which of these radiation interactions DO NOT result in ionization of an atom? A. Coherent scattering B. Photoelectric Absorption C. Compton Scattering correct answers A. Coherent scattering The energy of ions created in air from x-rays is called: A. Exposure B. Air Kerma C. Absorbed dose D. Equivalent dose E. Effective dose correct answers B. Air Kerma For deterministic effects of radiation, increasing dose results in: A. increased severity of the effect B. Decreased severity of ...

C ----If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB B ----The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. What is the signal-to- noise ratio (SNR) (dB) at the receiver i...

If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB - C. 30 dB The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. What is the signal-to- noise ratio (SNR) (dB) at the receiver inp...

Artifact -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 -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 -Answer A structure in the body that contains both cystic and solid components. Echogenic -Answer A structure or medium that p...

CT registry- image production Exam Questions and Answers 100% Pass Fundamental principle of ct may be summarized as - Correct Answer ️️ -An image of an object may be reconstructed on the basis of the attenuation that occurs as x radiation is transmitted through it Detectors measure - Correct Answer ️️ -The radiation that is transmitted through the pt. An image is reconstructed in the basis of the magnitude of X-ray attenuation that occurs at spatially distributed points within the...

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 ...

Certified Playground Safety Inspector CPSI Sample Exam Questions 2024/25 To be compliant with ASTM 1487, a designer or manufacturer of playground equipment should - ANSWER provide buyers with a parts list for the playground 2. The fish or wedge probe is used to determine whether or not a hazard exists on - ANSWER a partially bounded opening 3. Which of the following is correct regarding the i...