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devel / comp.protocols.dicom / Device UID (0018,1002) and UDI Sequence (0018,100A)

Device UID (0018,1002) and UDI Sequence (0018,100A)

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Subject: Device UID (0018,1002) and UDI Sequence (0018,100A)
From: sigma.winkler@gmail.com (Silvia Winkler)
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by: Silvia Winkler - Tue, 25 Jul 2023 12:09 UTC

The attribute Device UID (0018,1002) is defined as "Unique identifier of the equipment that produced the Composite Instances."

Is this meant to uniquely identify a single device (a concrete CT scanner) or is it legitimate to use it to identify a class of devices (all CT scanners of a specific type and version)?

If the first one is true: is there any relationship between Device UID (0018, 1002) and the Device UDI as stored in UDI Sequence (0018,100A)?

Re: Device UID (0018,1002) and UDI Sequence (0018,100A)

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Date: Wed, 9 Aug 2023 13:57:01 -0700 (PDT)
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Subject: Re: Device UID (0018,1002) and UDI Sequence (0018,100A)
From: dclunie@dclunie.com (David Clunie)
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by: David Clunie - Wed, 9 Aug 2023 20:57 UTC

Hi Silvia

On Tuesday, July 25, 2023 at 8:09:06 AM UTC-4, Silvia Winkler wrote:
> The attribute Device UID (0018,1002) is defined as "Unique identifier of the equipment that produced the Composite Instances."
>
> Is this meant to uniquely identify a single device (a concrete CT scanner) or is it legitimate to use it to identify a class of devices (all CT scanners of a specific type and version)?

Instance not class.

> If the first one is true: is there any relationship between Device UID (0018, 1002) and the Device UDI as stored in UDI Sequence (0018,100A)?

No. One is a UID and the other has a format defined by the regulators.

That said, nobody ever uses Device UID.

David

Subject	Author
Device UID (0018,1002) and UDI Sequence (0018,100A)	Silvia Winkler
Re: Device UID (0018,1002) and UDI Sequence (0018,100A)	David Clunie