Import general PDF files and turn them into DICOM PDF format is not much different to import other file formats, i.e. windows Bitmap and Jpeg images.

Based on the DICOM supplement 104, we made a small VB6 program which demonstrate what attributes are needed for making a valid DICOM PDF file.

Dim g As New DicomGlobal 
Dim pdf As New DicomDataSet
Dim pdfData() As Byte
Dimfile_length As Long
Dimfnum As Integer 

' Read in PDF file as Byte array
CommonDialog1.Filter = "*.pdf|*.pdf"
CommonDialog1.ShowOpen
If CommonDialog1.FileName <> "" Then
   file_length = FileLen(CommonDialog1.FileName)
   fnum = FreeFile
   ReDim pdfData(1 To file_length)
   Open CommonDialog1.FileName For Binary As #fnum
   Get #fnum, 1, pdfData
   Close fnum
Else
   MsgBox "No file specified."
   Exit Sub
End If

' ==== Patient Module Attributes ====
pdf.Attributes.Add &H10, &H10, "Patient Name 123"   ' Patient Name
pdf.Attributes.Add &H10, &H20, 123456               ' Patient ID
pdf.Attributes.Add &H10, &H30, ""                   ' Patient DOB
pdf.Attributes.Add &H10, &H40, "O"                  ' Patient Sex

' ==== Study Module Attributes ====
pdf.Attributes.Add &H20, &HD, g.NewUID              ' Study Instance UID
pdf.Attributes.Add &H8, &H20, ""                    ' Study Date
pdf.Attributes.Add &H8, &H30, ""                    ' Study Time
pdf.Attributes.Add &H8, &H90, ""                    ' Referring Physician's Name
pdf.Attributes.Add &H20, &H10, 1                    ' Study ID
pdf.Attributes.Add &H8, &H50, ""                    ' Accession Number

' ==== Encapsulated Document Series Module Attributes ====
pdf.Attributes.Add &H8, &H60, "OT"                  ' Modality
pdf.Attributes.Add &H20, &HE, g.NewUID              ' Series Instance UID
pdf.Attributes.Add &H20, &H11, 1                    ' Series Number

' ==== General Equipment Module Attributes ====
pdf.Attributes.Add &H8, &H70, ""                    ' Manufacturer
 
' ==== SC EQUIPMENT MODULE ATTRIBUTES ====
pdf.Attributes.Add &H8, &H64, "SD"                  ' Conversion Type

' ==== Encapsulated Document Module Attributes ====
pdf.Attributes.Add &H20, &H13, 1                    ' Instance Number
pdf.Attributes.Add &H8, &H23, ""                    ' Content Date
pdf.Attributes.Add &H8, &H33, ""                    ' Content Time
pdf.Attributes.Add &H8, &H2A, ""                    ' Acquisition Datetime
pdf.Attributes.Add &H28, &H301, "NO"                ' Burned In Annotation
pdf.Attributes.Add &H42, &H10, ""                   ' Document Title
pdf.Attributes.Add &H40, &HA043, ""                 ' Concept Name Code Sequence, a coded representation of the document title
pdf.Attributes.Add &H42, &H12, "application/pdf"    ' MIME Type pf Encapsulated Document

pdf.Attributes.Add &H42, &H11, pdfData              ' Encapsulated Document stream, containing a document encoded
                                                      according to the MIME Type

' ==== SOP Common ====
pdf.Attributes.Add &H8, &H16, "1.2.840.10008.5.1.4.1.1.104.1" ' SOP Class UID
pdf.Attributes.Add &H8, &H18, g.NewUID              ' SOP Instance UID

'' Write file out
pdf.WriteFile "c:\DICOM_PDF.dcm", True, "1.2.840.10008.1.2.1"

NOTE, PDF import will become part of DicomObjects' FileImport method in the COM version and the Import method in the .NET version from any versions dated 18th March 2009 and onwards.