Which of the following may cause nonlinear shift variant behavior
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10. Which of the following may cause nonlinear, shift-variant behavior?. Data-dependent weighting W Non-quadratic regularizers R Nonnegativity constraints Incomplete algorithm convergence All of the above. The LIR of a statistical reconstruction methods depends on:. Point location

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Which of the following may cause nonlinear shift variant behavior

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Which of the followingmay cause nonlinear, shift-variant behavior?

  • Data-dependent weighting W

  • Non-quadratic regularizers R

  • Nonnegativity constraints

  • Incomplete algorithm convergence

  • All of the above


The lir of a statistical reconstruction methods depends on
The LIR of a statistical reconstruction methods depends on:

Point location

Point amplitude

Surrounding object

Data Statistics

All of the above

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How does fwhm of lir for pwls method compare at center of 4 disks
How does FWHM of LIR for PWLS method compare at center of 4 disks?

same

higher attenuation disks have bigger FWHM

lower attenuation disks have smaller FWHM

no relationship between attenuation and LIR

none of the above

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For PWLS reconstruction, disks?compared to the noise variance in the heart region,the noise variance in the lung region is:

Much lower

Somewhat lower

Comparable

Higher

None of the above

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How much does quadratic regularization improve snr of cho for ske detection task
How much does (quadratic) regularization improve SNR of CHO for SKE detection task?

A lot, if we select proper beta

At best only a little

Makes no difference

Quadratic regularization degrades SNR

(due to blur)

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Enter question here
Enter question here... for SKE detection task?

Enter answer text here...

Enter answer text here...

Enter answer text here...

Enter answer text here...

Enter answer text here...

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