Chapters 9-12- Jessica Flashcards
What type of transducer produced the image?
a. sector phased array c. curved phased array
b. vector array d. linear phased array
c
What type of transducer produced the following image?
a. sector phased array c. linear sequential array
b. vector phased array d. curved sequential array
a
Transducers can be electronically focused by:
a. adding an acoustic lens to the face of the transducer
b. varying timing of the release of the pulses
c. using a convex shaped PE element
d. using a concave shaped element
b
What image shape is the image display from a sequential linear transducer?
a. trapezoidal c. wedge shaped with curved top
b. rectangle d. flat top triangle
b
All of the following transducers can be focused at multiple depths, except:
a. mechanical single element c. curvilinear phased
b. linear phased d. annular phased
a
______ used to form the sector shaped field of view for a phased array transducer.
a. the curved arrangement of the elements are
b. electronic focusing is
c. an acoustic lens is
d. electronic steering is
d
What type of probe is preferred for cardiac imaging?
a. phased curved c. Linear phased sector
b. curved sequential d. Linear sequential
c
Which of the following describes a type of focusing used in an annular phased array?
a. focusing at multiple levels across all depths of the image
b. mechanical focusing using rectangular elements
c. single focal point that is adjustable by the technologist
d. fixed focus set by the manufacturer
a
Which of the following is defined as the minimum distance two reflectors can be, perpendicular to the beam, and still appear on the screen as two dots?
a. Transverse Resolution
b. Depth Resolution
c. Range Resolution
d. Axial Resolution
a
Which of the following electrical patterns produces electronic focusing of the ultrasound beam?
a. circular c. curved
b. spiral d. sloped
c
Which of the following is true regarding annular and linear arrays?
a. annular arrays must be mechanically steered, linear arrays use electronic steering
b. annular arrays can be electronically steered, linear arrays must be mechanically steered
c. annular arrays have multiple elements, linear arrays have a single element
d. annular arrays and linear arrays can be electronically steered
a
Which of the following statements is true regarding the advantage of a mechanical annular probe over the mechanical single element probe?
a. The single element probe will have higher temporal resolution than the annular array
b. The array of elements allows for electronic steering which is not possible with a single element
c. The array of elements allows for electronic focusing which is not possible with a single element
d. The array of elements allows for mechanical steering which is not possible with a single element
c
Which of the following statements is true regarding the differences between a vector array compared to a phased array?
a. The vector array has a smaller near field of view than the phased sector array
b. The vector array has a smaller footprint than the phased array
c. The vector array is mechanically steered while the phased sector array is electronically steered
d. The vector array provides better penetration capabilities than the phased sector array of the same MHz
b
What type of focusing with a mechanical transducer uses an acoustic lens?
a. electronic c. External focusing
b. Internal focusing
c
What type of transducer has beam steering that combines linear and phased array technology?
a. Curvilinear c. Convex
b. Vector d. Annular
b
