Aliasing Study guides, Class notes & Summaries

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...

Sample rate - correct answerIn order to increase the HIGH FREQUENCY RESPONSE of your digital audio system youwould increase the ________________ Dynamic range - correct answerIn order to increase the ______________ of your digital audio system you would increase the BIT DEPTH Low pass filter - correct answerIn Analog to Digital stage of a digital audio osystem a __________________ is used to eleminate the effects of aliasing Nyquist, nyquist - correct answerAccording to the ____________...

ARDMS SPI Practice Exam B Questions and Answers Which artifact is illustrated by this image? - CORRECT ANSWER-a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? - CORRECT ANSWER-a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for the sonographer to take when receiving a verbal order for an exam? - CORRECT ANSWER-a) Deny performance of the exam until a written request is rece...

Electromagnetic energy is symbolized by a sine wave that has two components of measurements, they are: - Answer-Wavelength and frequency Of the following techniques which one is applied to prevent "crosstalk" between multi-slices with little or no interslice "gap" - Answer-Interleaving The artifact known as aliasing, wrap around or fold over will always show up in what gradient direction? - Answer-Phase encoding Which of the following causes of artifacts on MR images is most commonly m...

Sample rate - correct answers In order to increase the HIGH FREQUENCY RESPONSE of your digital audio system youwould increase the ________________ Dynamic range - correct answers In order to increase the ______________ of your digital audio system you would increase the BIT DEPTH Low pass filter - correct answers In Analog to Digital stage of a digital audio osystem a __________________ is used to eleminate the effects of aliasing Nyquist, nyquist - correct answers According to the ____...

The most appropriate setting a technologist would use to control the frequency band of waveforms on a recording is the: correct answer: low filter Which of the following would be the MOST important to document during a PSG? A. Number of awakenings B. Occasional PVC's C. Position changes D. Presence of PLM's correct answer: position changes The importance of selecting sampling rates according to the recommended guidelines is to: correct answer: minimize aliasing effect What proc...

CCI Echo Review Questions and Answers Already Passed Which abnormalities commonly go with Marfan's? Mitral Valve prolapse and Aortic dilation Papillary muscle dysfunction usually results from Ischemic Heart Disease In order to record the veg of endocarditis by echo, it must be 3 mm How many veins connect the pulmonary vascular bed with the LA? 4 Which cardiomyopathy is associated with amyloidosis? infiltrative Which m-mode finding is considered to be a specific indicator of ...

ARDMS SPI Practice A & B exam |Q & A |ALREADY GRADED A+ |2024 UPDATE 1. C<ans) What is dynamic aperture? A. aperture that varies with transmit frequency B. aperture that decreases as a function of time C. aperture that increases with increasing focal length D.aperture that changes as a function of frame rate 2. A<ans) to which acoustic variable is penetration depth inversely related?A.frequency B.wavelength C.period D.propagation speed 3. B<ans) which imaging mode requires a...

CPSC 2150 Exam 1 Questions & Answers 2024/2025 When zipping up our directory on unix, which flag will we use to include all the subdirectories and their files as well? - ANSWERS-r Which of the following are included in a Makefile command? (may be more than one) - ANSWERStarget, dependencies, unix command to run In java, a main function must... - ANSWERSBe inside of a class Be static Have one argument, an array of strings Anything that is not one of the 8 primitive data types in J...

SPI PRACTICE (ARDMS A & B) MULTIPLE CHOICE SOLUTION 2023 What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed which imaging mode requires a broadband transducer? A.continuous wave dopple...