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Explicit-VR transfer syntax limits the value multiplicity of DICOM data elements with decimal string (DS) value

John W Matthews, Walter R Bosch

    Physics in Medicine and Biology
    |February 17, 2006
    PubMed
    Summary
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    The Advanced Technology QA Consortium (ATC) found encoding issues when converting DICOM RT Dose objects from Implicit-VR Little-Endian to Explicit-VR Little-Endian transfer syntax. Certain data elements are lost during this conversion, impacting data integrity.

    Area of Science:

    • Medical Imaging
    • Digital Health
    • Radiotherapy Informatics

    Background:

    • The Advanced Technology QA Consortium (ATC) investigated data encoding in DICOM RT Dose objects.
    • A specific issue was identified during the conversion between Implicit-VR (Little-Endian) and Explicit-VR (Little-Endian) transfer syntaxes.

    Discussion:

    • Data elements representable in Implicit-VR Little-Endian syntax are not always representable in Explicit-VR Little-Endian syntax.
    • This discrepancy can lead to loss of critical information during DICOM RT Dose object conversion.

    Key Insights:

    • Encoding incompatibility exists between DICOM RT Dose Implicit-VR LE and Explicit-VR LE transfer syntaxes.
    • The conversion process can result in the inaccessibility of certain data elements.

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    Outlook:

    • Further investigation is needed to understand the full impact of this data loss.
    • Recommendations for robust conversion protocols and potential standardization updates are anticipated.