DicomAnonymizer: increment dates per PatientID using a lookup table?

[Nolan, Tracy]

Hello people smarter than I am,

 

1. I have successfully used the below to apply a cohort-wide integer offset to dates as they appear in the DICOM:

<e en="T" t="00080020" n="StudyDate">@incrementdate(this,@DATEINC)</e>

And I’ve used the below to refer to a lookup table outside the DicomAnonymizer stage script

<e en="T" t="00100010" n="PatientName">@lookup(PatientID,ptid)</e>

 

2. I’d like to arrange a date offset integer at the lookup table, to offset each PERSON’s dates by a different increment in relation to dates as they appear in the DICOM, but I think @incrementdate only takes two arguments… would the below work:

<e en="T" t="00080020" n="StudyDate">@incrementdate(this, @lookup(PatientID,poff)</e>   where poff is a column name in the lookup table with a value in each row with PatientID, containing the increment value in the lookup table (for example -365 for a shift backwards by a year)

 

3. Now since these poff patient-wide offset intervals are integers rather than calendar dates, I was also trying to see if I could shoehorn  

 

@dateinterval(this,poff,PatientID) but I don’t think that will work since I think dateinterval expects M/D/YYYY or YYYYMMDD (origindate) format.

 

 

But I’m kind of stuck at this point. Do you have suggestions?

 

 

Tracy Nolan

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