Hi,

The NM Detector Module (C.8.4.11) contains the two attributes:

X Focus Center (00018,1183) and Y Focus Center (0018,1184).

Described in the DICOM standard as follows:

C.8.4.11.1.2 Focus Center
X Focus Center (0018,1183) and Y Focus Center (0018,1184) for NM Image
data is used to define the projection of the focus for a converging or
diverging collimator within the un-zoomed Field of View. It is defined
in mm for row and column relative to the center of the un-zoomed Field
of View.

According to the Data Dictionary these have a VM of "1-2".

Can anyone explain what the second value in these attributes is for if
it is present?

Thanks in advance,
Nils Gladitz