MCQ 1 - The ultrasound Beam with
correct answers 100%
1. An ultrasound beam passing through the body (3)
(A) is attenuated
(B) produces heating of tissues
(C) can be reflected
(D) produces ionization - Correct Answers (A) is attenuated
(B) produces heating of tissues
(C) can be reflected
2. Ultrasonic pulses (2)
(A) are poorly transmitted by liquids
(B) are poorly transmitted by air gaps
(C) are partially reflected at interfaces between two liquid media
(D) are partially transmitted at interfaces between two solid media - Correct Answers (B) are
poorly transmitted by air gaps
(D) are partially transmitted at interfaces between two solid media
3. The Fraunhofer zone is the (1)
(A) image plane
(B) image focus
(C) near field
(D) far field - Correct Answers (D) far field
4. Which of the following statements are true concerning the nature of diagnostic ultrasound
in liver? (1)
, (A) The wave speed and frequency are constant regardless of the wavelength
(B) The wave speed is constant regardless of the wavelength
(C) Wave speed increases with the increasing frequency
(D) None of the above - Correct Answers (B) The wave speed is constant regardless of the
wavelength
5. Which of the following characteristics of diagnostic ultrasound applies also to X-radiation?
(2)
(A) It is a wave phenomenon
(B) Its wave speed and frequency are inversely proportional
(C) Matter must be present for transmission
(D) Molecular compression and rarefaction occur - Correct Answers (A) It is a wave
phenomenon
(B) Its wave speed and frequency are inversely proportional
6. When two or more (plane) ultrasound waves exist in the same medium at the same time
(1)
(A) they will interfere constructively if traveling with the same direction and phase
(B) standing waves will be produced if they are traveling with the same direction and phase
(C) standing waves will be produced if they are traveling in the same direction but out of phase
(D) None of the above - Correct Answers (A) they will interfere constructively if traveling with
the same direction and phase
7. Specific acoustic impedance as applied to diagnostic ultrasound increases with increasing
(2)
(A) frequency
(B) wavelength
correct answers 100%
1. An ultrasound beam passing through the body (3)
(A) is attenuated
(B) produces heating of tissues
(C) can be reflected
(D) produces ionization - Correct Answers (A) is attenuated
(B) produces heating of tissues
(C) can be reflected
2. Ultrasonic pulses (2)
(A) are poorly transmitted by liquids
(B) are poorly transmitted by air gaps
(C) are partially reflected at interfaces between two liquid media
(D) are partially transmitted at interfaces between two solid media - Correct Answers (B) are
poorly transmitted by air gaps
(D) are partially transmitted at interfaces between two solid media
3. The Fraunhofer zone is the (1)
(A) image plane
(B) image focus
(C) near field
(D) far field - Correct Answers (D) far field
4. Which of the following statements are true concerning the nature of diagnostic ultrasound
in liver? (1)
, (A) The wave speed and frequency are constant regardless of the wavelength
(B) The wave speed is constant regardless of the wavelength
(C) Wave speed increases with the increasing frequency
(D) None of the above - Correct Answers (B) The wave speed is constant regardless of the
wavelength
5. Which of the following characteristics of diagnostic ultrasound applies also to X-radiation?
(2)
(A) It is a wave phenomenon
(B) Its wave speed and frequency are inversely proportional
(C) Matter must be present for transmission
(D) Molecular compression and rarefaction occur - Correct Answers (A) It is a wave
phenomenon
(B) Its wave speed and frequency are inversely proportional
6. When two or more (plane) ultrasound waves exist in the same medium at the same time
(1)
(A) they will interfere constructively if traveling with the same direction and phase
(B) standing waves will be produced if they are traveling with the same direction and phase
(C) standing waves will be produced if they are traveling in the same direction but out of phase
(D) None of the above - Correct Answers (A) they will interfere constructively if traveling with
the same direction and phase
7. Specific acoustic impedance as applied to diagnostic ultrasound increases with increasing
(2)
(A) frequency
(B) wavelength
