QUESTIONS & ANSWERS
What is the standard for communication between medical imaging computers?
A. ALARA
b. Pacs
C. D to A conversion
D. DICOM
E. A to D conversion - ANS ✔✔D. DICOM
The Curie temperature has which effect?
A. the backing material delaminates from the active element
B. the glue binding the crystal and matching layer melts
C. the ferroelectric material depolarized
D. the matching layer changes its impedance - ANS ✔✔C. the ferroelectric materials depolarize
What happens to venous blood flow to the heart during expiration?
A. increased
B. decreased
C. unchanged - ANS ✔✔B. decreased
Which of the following has a propagation speed closest to "soft tissue"?
A. muscle
B. fat
C. bone
D. air - ANS ✔✔A. muscle
, In a B-mode display, which of the following axes are used for the amplitude of the reflection?
A. z axis
B. m axis
C. x axis
D. y axis
E. time base axis - ANS ✔✔A. z-axis
What is displayed on the x-axis of an M-mode image?
A. time
B. time of flight
C. reflector depth
D. echo intensity
E. red blood cell velocity - ANS ✔✔A. time
What is displayed on the y-axis of an m-mode image?
A. time
B. time of flight
C. echo intensity
D. red blood cell velocity - ANS ✔✔B. time of flight
(True or False) A sonographer's education ends when they become registered. - ANS ✔✔False
They dynamic range is the raito of the smallest to the largest _____ that a system can process
without distortion.
A. amplitude