Nuclear Medicine Instrumentation
Final Exam Questions and
Answers 100% Pass
What is the mathematical operation that multiples two functions that are both in
the spatial domain? - CORRECT ANSWER:-Convolution
How is a 2D projection from the spatial domain converted to the spatial frequency
domain? - CORRECT ANSWER:-Fourier transform
Fourier Transform - CORRECT ANSWER:-the mathematical process of
converting raw data into an image suitable for display
What are the units of spatial frequency? - CORRECT ANSWER:-Inverse time
___________ is the total radioactivity or attenuation of a column of a tissue -
CORRECT ANSWER:-Ray-sum
What are the matrix elements of a 3D image matrix called? - CORRECT
ANSWER:-Voxels
, Step-and-shoot Acquisition - CORRECT ANSWER:-The most common SPECT
acquisition technique. Camera is stationary and does not take images while
rotating.
Noise becomes the dominant image component at ________ frequencies. -
CORRECT ANSWER:-High
When reconstructing a SPECT dataset using filtered back-projection, the
_________ filter removes 1/r blurring. - CORRECT ANSWER:-ramp
Dynamic Triangulation - CORRECT ANSWER:-this is a technique used to see the
same area of a 3D image matrix
Value of the Nyquist frequency - CORRECT ANSWER:-0.50
Oblique reorientation - CORRECT ANSWER:-Rotating a 3D image matrix so it
conforms to a certain set of axes
Which of the following are characteristics incorporated into the forward-projection
step of iterative reconstruction? - CORRECT ANSWER:--Attenuation
-Resolution loss with distance
-scatter
All of the following are parameters that must be specified for a SPECT acquisition
EXCEPT ___________. - CORRECT ANSWER:-Total counts
steps of filtered back-projection - CORRECT ANSWER:-1. Acquire 2D
projection
Final Exam Questions and
Answers 100% Pass
What is the mathematical operation that multiples two functions that are both in
the spatial domain? - CORRECT ANSWER:-Convolution
How is a 2D projection from the spatial domain converted to the spatial frequency
domain? - CORRECT ANSWER:-Fourier transform
Fourier Transform - CORRECT ANSWER:-the mathematical process of
converting raw data into an image suitable for display
What are the units of spatial frequency? - CORRECT ANSWER:-Inverse time
___________ is the total radioactivity or attenuation of a column of a tissue -
CORRECT ANSWER:-Ray-sum
What are the matrix elements of a 3D image matrix called? - CORRECT
ANSWER:-Voxels
, Step-and-shoot Acquisition - CORRECT ANSWER:-The most common SPECT
acquisition technique. Camera is stationary and does not take images while
rotating.
Noise becomes the dominant image component at ________ frequencies. -
CORRECT ANSWER:-High
When reconstructing a SPECT dataset using filtered back-projection, the
_________ filter removes 1/r blurring. - CORRECT ANSWER:-ramp
Dynamic Triangulation - CORRECT ANSWER:-this is a technique used to see the
same area of a 3D image matrix
Value of the Nyquist frequency - CORRECT ANSWER:-0.50
Oblique reorientation - CORRECT ANSWER:-Rotating a 3D image matrix so it
conforms to a certain set of axes
Which of the following are characteristics incorporated into the forward-projection
step of iterative reconstruction? - CORRECT ANSWER:--Attenuation
-Resolution loss with distance
-scatter
All of the following are parameters that must be specified for a SPECT acquisition
EXCEPT ___________. - CORRECT ANSWER:-Total counts
steps of filtered back-projection - CORRECT ANSWER:-1. Acquire 2D
projection
