[Castor-users] Data conversion of Sinograms from Siemens mMR

[Li, Shenpeng (H&B, Parkville)]

Dear castor users,

I am working on the conversion of Siemens mMR data to castor format. I have used e7tools to derive sinograms. The data looks like a 2 volumes 3D sinograms. In each volume, I can see a stack of 3D sinograms on z-axis. Here is the example of the header.

!INTERFILE
name of data file := emis_00.s
image data byte order := LITTLEENDIAN
number of dimensions := 3
matrix size [1] := 344
matrix size [2] := 252
matrix size [3] := 837
number of z elements := 127 230 186 142 98 54 127 230 186 142 98 54
number format := float
number of bytes per pixel := 4
data offset in bytes := 0
scaling factor (mm/pixel) [1] := 2.0445
scaling factor (mm/pixel) [2] := 1.0
scaling factor (mm/pixel) [3] := 2.03125

Each item in "number of z elements" [127 230 186 142 98 54] actually represents one or two (even number) 3D sinograms. It looks like the sinograms generated by different rings. My questions are:

  1.  How can I combine these sinograms into a single 3D sinograms? Then, I can convert it to castor format.
  2.  The second volume of the data are sinograms of the object. The first one looks like a sinogram of random events. Am I right?

I appreciate your help.


Best Regards,
Shenpeng Li







-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.castor-project.org/pipermail/castor-users/attachments/20201104/7af00d92/attachment.html>