The effect of changing the order or power factor of a filter is ________ apparent than changing the cutoff frequency.
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A mispositioning of counts around the edge of a detector cau…
A mispositioning of counts around the edge of a detector caused by internal reflection of light is known as:
When performing iterative reconstruction techniques to a sam…
When performing iterative reconstruction techniques to a sample of the projection views you are performing which of the following?
The planar uniformity of a gamma camera should be ___ in ord…
The planar uniformity of a gamma camera should be ___ in order to produce acceptable SPECT images.
What attenuation correction method assumes that all material…
What attenuation correction method assumes that all material in a 3D image matrix has the same attenuation coefficient?
The circumferential profile technique used to quantitate SPE…
The circumferential profile technique used to quantitate SPECT myocardial perfusion imaging studies is performed on what set of tomographic slices?
Which of the following statements about the effect of the fi…
Which of the following statements about the effect of the filter cutoff frequency on an image is true?
Which of the following filters would produce the smoothest i…
Which of the following filters would produce the smoothest image?
The Nyquist frequency is:
The Nyquist frequency is:
Attenuation correction methods are used in SPECT imaging bec…
Attenuation correction methods are used in SPECT imaging because: