Relationship between visists and studies in the DICOM model of the real world - DICOM
This is a discussion on Relationship between visists and studies in the DICOM model of the real world - DICOM ; Peoples:
Recently I asked about the relationship between Study Dates and
series. Namely, I wanted to know if it was possible for a study to
span multiple dates, with series on different dates. It was very
helpfully indicated that, yes, ...
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Relationship between visists and studies in the DICOM model of the real world
Peoples:
Recently I asked about the relationship between Study Dates and
series. Namely, I wanted to know if it was possible for a study to
span multiple dates, with series on different dates. It was very
helpfully indicated that, yes, indeed, simplest example of this being
a bolus/contrast study that you had to come back for.
Ok, fair enough. However, in looking at the DICOM Model of the real
world, it looks like a visit "has a" study. For ambulatory studies
that may span different dates, how does this work? Because the
diagram sure seems to indicate a one to one correspondence between
studies and visits, unless I am reading it wrong.
Thanks in advance for your help.
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Re: Relationship between visists and studies in the DICOM model of the real world
> Ok, fair enough. However, in looking at the DICOM Model of the real
> world, it looks like a visit "has a" study. For ambulatory studies
> that may span different dates, how does this work? Because the
> diagram sure seems to indicate a one to one correspondence between
> studies and visits, unless I am reading it wrong.
The visit is an entity in the largely abandoned Normalized/Detached
Patient, Visit , Study, Interpretation, and Result SOP classes and
transactions. Much of this appears to have been modeled on similar
concepts included in HL7. The visit in particular appears to me to
have been modeled on the HL7 "Episode" - ie a period during which
multiple clinical encounters take place, each encounter possibly
producing separate residual data products, such a DICOM study. The
Visit attributes remain in DICOM to document things that may be
common across multiple study instances, things like: admitting
diagnosis or route of admissions. The visit remains as an entity in
the DICOM standard; but there really aren't any interoperable DICOM
transactions dealing with Visits. These are really handled by
transactions in the HL7 domain; and only affect DICOM through
attributes which "bleed through" into worklist entries or composite
objects.
