Linear measurements SR has duplicate image reference entries

[JamesDarcy616]

Multiple linear measurements in an SR from https://dcmjs-org.github.io/dcmjs/examples/linearMeasurements/index.html results in duplicate entries in both the Current Requested Procedure Evidence sequence and the Image Library Group container within the SR content.

Current Requeseted Procedure Evidence:

>(0008,1115) SQ #-1 [1 item] Referenced Series Sequence
>>(0008,1199) SQ #-1 [1 item] Referenced SOP Sequence
>>>(0008,1150) UI #28 [1.2.840.10008.5.1.4.1.1.4.1] Referenced SOP Class UID
>>>(0008,1155) UI #44 [2.25.500344585412579404970070655256084067295] Referenced SOP Instance UID
>>>(0008,1160) IS #2 [1] Referenced Frame Number
>>(0020,000E) UI #44 [2.25.840193827043248548801581830021610793828] Series Instance UID
>(0020,000D) UI #60 [1.3.6.1.4.1.5962.99.1.3814087073.479799962.1489872804257.3.0] Study Instance UID
>(0008,1115) SQ #-1 [1 item] Referenced Series Sequence
>>(0008,1199) SQ #-1 [1 item] Referenced SOP Sequence
>>>(0008,1150) UI #28 [1.2.840.10008.5.1.4.1.1.4.1] Referenced SOP Class UID
>>>(0008,1155) UI #44 [2.25.500344585412579404970070655256084067295] Referenced SOP Instance UID
>>>(0008,1160) IS #2 [1] Referenced Frame Number
>>(0020,000E) UI #44 [2.25.840193827043248548801581830021610793828] Series Instance UID
>(0020,000D) UI #60 [1.3.6.1.4.1.5962.99.1.3814087073.479799962.1489872804257.3.0] Study Instance UID

Image Library Group:

>>(0040,A040) CS #10 [CONTAINER] Value Type
>>(0040,A043) SQ #-1 [1 item] Concept Name Code Sequence
>>>(0008,0100) SH #6 [126200] Code Value
>>>(0008,0102) SH #4 [DCM] Coding Scheme Designator
>>>(0008,0104) LO #20 [Image Library Group] Code Meaning
>>(0040,A050) CS #8 [SEPARATE] Continuity Of Content
>>(0040,A730) SQ #-1 [6 items] Content Sequence
>>>(0008,1199) SQ #-1 [1 item] Referenced SOP Sequence
>>>>(0008,1150) UI #28 [1.2.840.10008.5.1.4.1.1.4.1] Referenced SOP Class UID
>>>>(0008,1155) UI #44 [2.25.500344585412579404970070655256084067295] Referenced SOP Instance UID
>>>>(0008,1160) IS #2 [1] Referenced Frame Number
>>>(0040,A010) CS #8 [CONTAINS] Relationship Type
>>>(0040,A040) CS #6 [IMAGE] Value Type
>>>(0008,1199) SQ #-1 [1 item] Referenced SOP Sequence
>>>>(0008,1150) UI #28 [1.2.840.10008.5.1.4.1.1.4.1] Referenced SOP Class UID
>>>>(0008,1155) UI #44 [2.25.500344585412579404970070655256084067295] Referenced SOP Instance UID
>>>>(0008,1160) IS #2 [1] Referenced Frame Number
>>>(0040,A010) CS #8 [CONTAINS] Relationship Type
>>>(0040,A040) CS #6 [IMAGE] Value Type