- #1

- 4

- 0

## Summary:

- I am studying 4pi kinematic imaging with a neutron scatter camera and want to perform MLEM given det1, det2, and theta values for my cones.

## Main Question or Discussion Point

I have a response matrix for my 4pi imager to perform MLEM that has dimensions:

(16 x 16 x 18) x (72 x 36) which is Observation Bins x Source Bins.

I'm told that I can use MLEM to create an image by feeding in a 1x3 vector of

det1, det2, theta

into the MLEM algorithm. Where det1, det2 are the 2 detectors a particle interacts with in the kinematic imaging and theta is the opening angle of a cone of probability for the particle's incident direction. However every paper I've read says I need a vectorized image (or simple backprojection) that has a 1 x (72 x 36) dimensional form. How can I do the MLEM iteration in my case?

(16 x 16 x 18) x (72 x 36) which is Observation Bins x Source Bins.

I'm told that I can use MLEM to create an image by feeding in a 1x3 vector of

det1, det2, theta

into the MLEM algorithm. Where det1, det2 are the 2 detectors a particle interacts with in the kinematic imaging and theta is the opening angle of a cone of probability for the particle's incident direction. However every paper I've read says I need a vectorized image (or simple backprojection) that has a 1 x (72 x 36) dimensional form. How can I do the MLEM iteration in my case?