Axial resolution - Study guides, Class notes & Summaries

The main goal in CT is to: A. Minimize superimposition B. Improve contrast resolution C. Provide a large amount of clinical information in a short amount of time D. All the above - correct answer D Arrange MR Imaging, CT Imaging, and plain film x-ray imaging in order from best to worst in their ability to differentiate soft tissues in the body: A. X-ray is better than CT is better than MRI B. MRI is better than CT is better than x-ray C. CT is better than MRI is better than x-ray...

Which of the following transducers will have the worst axial resolution? a. Vector array, 3 MHz b. Linear Sequential Array, 6 MHZ c. Linear Phased Array 7.5 MHZ d. Annular Array, 6 MHz - Vector array, 3 MHz A sound wave is traveling in the body and propagates from muscle to air. What percentage of the sound wave is most likely reflected at the muscle-air boundary? a. 0.5% b. 75% c. 25% d. 5% e. 99% - 75% Which of the following lists is in decreasing order? a. mega, kilo, deca, milli...

When the direction of the wave propagation is parallel to the particle motion of the medium, the wave being transmitted is called a: A) surface wave. B) longitudinal wave. C) transverse wave. D) non-linear sound. - CORRECT ANSWER B) longitudinal wave If the sound beam attenuated 6 dB, what will happen to the overall intensity? A) Quadrupled B) Doubled C) Halved D) Quartered - CORRECT ANSWER D) Quartered Frequency increased from 3 MHz to 6 MHz, what will happen to ...

ARDMS SPI PRACTICE TEST NEW 2023-2024 ALL DONE SOLUTION Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and increases penetr...

Sound waves are: - longitudinal, mechanical The speed of sound in soft tissue is closest to: - 1,500 m/s The frequency closest to the lower limit of ultrasound is: - 15,000 Hz Which is not an acoustic variable? - intensity The effects of soft tissue on ultrasound are called: - acoustic propagation properties All of the following are true EXCEPT: - two waves with identical frequencies must interfere constructively Put in decreasing order: deci, deca, micro, centi - deca, deci, c...

SPI Practice Exam New Questions with 100% Correct Answers Already Graded A+ Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and incr...

ARDMS SPI Practice Test (2024) || With Questions & All Correct Answers (Rated A+) ARDMS SPI Practice Test (2024) || With Questions & All Correct Answers (Rated A+) A slice-thickness phantom measures which plane of the transducer? a. the scanning plane b. The elevation plane c. The azimuthal plane d. The temporal plane - ANSWER - b. Which of the following is not a technique that will reduce grating lobes? a. Tissue harmonic imaging b. Apodization c. Subdicing d. Edge enhanceme...

Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain - a. transmit Which of the following is considered the memory of an ultrasound instrument? a. pulser b. transducer c. receiver d. beam former e. digital scan converter f. display monitor - e. digital scan converter Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transducer d. flow towards the transducer - b. turbulent flow With pulse wave Doppler a...

SPI Practice Test Questions & Answers 2023/2024 Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - ANSWER-d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - ANSWER-d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and in...

"Electrical alternans" is seen on a patients EKG. The echo will most likely show? - ️️Large pericardial effusion A __________ pulse will improve axial resolution. - ️️Shorter A "b-notch" on the mitral valve in m mode is associated with ? - ️️Increased left ventricular end diastolic pressure A 22 year old patient with Down syndrome is referred to an echo lab. The most common lesion associated with these patients is ? - ️️Atrioventricular septal defect A 2D echo sho...