> I am trying to implement the C-STORE service, but came across this
> issue related to Preamble and File Meta Info. Right now, I have the
> "real data" part transferred OK, without any problem, but I don't know
> how to transfer the Preamble and File Meta Info, or whether they
> should be transferred at all.

The preamble and meta-header are never transmitted through any of the DICOM network services. All
C-STORE-RQ messages only contain the "pure" dataset part of the DICOM file, if the image originates
from a DICOM file. It is the task of the receiver to generate a new preamble/meta-header upon
reception. This can be done either from the command set (which contains all information needed).

Regards,
Marco Eichelberg
OFFIS

Hi Marco,

Thanks for your help. It is much clearer now.

But consider the situation that the image IS from a DICOM file, and
the DICOM file has the preamble set to something meaningful. Then
after the image is transferred and stored, will the meaningful
preamble info be lost, since the preamble is not transferred in any
way? Thanks.

Best,
Kevin


On Aug 7, 4:43 am, Marco Eichelberg
wrote:
> > I am trying to implement the C-STORE service, but came across this
> > issue related to Preamble and File Meta Info. Right now, I have the
> > "real data" part transferred OK, without any problem, but I don't know
> > how to transfer the Preamble and File Meta Info, or whether they
> > should be transferred at all.
>
> The preamble and meta-header are never transmitted through any of the DICOM network services. All
> C-STORE-RQ messages only contain the "pure" dataset part of the DICOM file, if the image originates
> from a DICOM file. It is the task of the receiver to generate a new preamble/meta-header upon
> reception. This can be done either from the command set (which contains all information needed).
>
> Regards,
> Marco Eichelberg
> OFFIS

> But consider the situation that the image IS from a DICOM file, and
> the DICOM file has the preamble set to something meaningful. Then
> after the image is transferred and stored, will the meaningful
> preamble info be lost, since the preamble is not transferred in any
> way? Thanks.

Correct. This is why you will hardly ever find meaningful information
in the preamble. The preamble only has the purpose to enable "dual-personality" files
that are at the same time valid DICOM files and valid TIFF files. Very few toolkits
support this feature, however.

Regards,
Marco Eichelberg
OFFIS