I would like to ask a question about the dicom image center

Beginner Questions
1

cbct origin[-140, -140, -140]
cbct spacing[0.5, 0.5, 0.5]
cbct size[560, 560, 560]
cbct centerPoint[-280, -280, 0]
cbct direction-1 0 0
0 -1 0
0 0 1

This is a CBCT image, and I don’t know if the information in this image is standard. Its center is not equal to the equicenter point of the device. Was the parameter setting incorrect during reconstruction？

2

Hello @ma1282029525,

The information is standard. The center of the image does not necessarily match the isocenter of the C-arm. For comparison see the two CBCT volumes in this dataset.