WS/T 597-2018Virtual print information interaction specification of medical digital imaging (English PDF)

5.1 Logical properties of virtual print information interaction

The virtual print information interaction attribute table is shown in Table 1.

Table 1 Virtual Print Information Interaction Attribute Table

Attribute Name Tag (Tag) VR VM Type Check the instance UID (Study Instance UID) (0020,000D) UI 1 1

5.2 Virtual Print Information Interaction Process

The process of virtual printing SCP and SCU information exchange is a specific complete film printing process (see DICOM Standard.2011 Edition Chapter 2) Page 93), as shown in Figure 1, after the completion of the printing session, the service will receive the data content and the inspection information corresponding to the current printing.

Association matching (see Appendix A for a detailed example).

print

SCU

print

SCP

DICOM Film Session N-CREATE DICOM Presentation LUT N-CREATE DICOM Film Box N-CREATE DICOM Image Box N-SET DICOM Film Box N-ACTION DICOM Film Session N-ACTION DICOM Film Box N-DELETE DICOM Film Session N-DELETE Printer status DICOM N-EVENT-REPORT

Figure 1 film printing flow chart

5.3 Virtual Print Interaction Matching Process

5.3.1 Process Matching Information

The SOP classes for the N-CREATE process in the film print session and the N-SET process for the DICOM image box are shown in Table 2.

Table 2 Basic Film Session Attribute Table

SOP class SOP class UID Basic Film Session SOP Class 1.2.840.10008.5.1.1.1 Basic grayscale image box SOP class 1.2.840.10008.5.1.1.4 in the N-CREATE communication process of the film session, the N-CREATE information that the service will receive is shown in Table 3.

Table 3 Basic Film Session Attribute Table

Property Name Tag (Tag) SCU/SCP Check the instance UID (Study Instance UID) (0020, 0010) U/U Related Reference Check (0008,1110) U/U >Related SOP Class UID (0008, 1150) M/M >Related SOP Instance UID (Referenced SOP Instance UID) (0008, 1155) M/M Specified Character Set (0008,0005) U/U Number of Copies (2000,0010) U/M Print Priority (2000,0020) U/M Film Type (2000,0030) U/M Film Destination (2000,0040) U/M Film Session Label (2000,0050) U/U Memory Allocation (2000,0060) U/U Owner ID (2100, 0160) U/U

Note 1. The M/M in the table indicates that the SCU supports the DIMSE service but does not require it to be used on an association. The SCP supports the DIMSE service.

Note 2. U/U in the table indicates that the SCU can support and use the DIMSE service, and the SCP can support the DIMSE service if the SCP does not support the SCU.

The DIMSE service used, which returns a failure status.

Note 3. U/M in the table indicates that the SCU can support and use the DIMSE service, and the SCP supports the DIMSE service.

In the N-SET communication flow of the image box, the N-SET information that the service will receive is shown in Table 4.

Table 4 Basic Gray Image Box N-SET Property Sheet

Property Name Tag (Tag) SCU/SCP Check the instance UID (Study Instance UID) (0020,000D) U/U Related Reading Sequence (0008, 1110) U/U >Related SOP Class UID (0008, 1150) M/M >Related SOP Instance UID (Referenced SOP Instance UID) (0008, 1155) M/M Image Box Position (2020,0010) M/M Basic Grayscale Image Sequence (2020, 0110) M/M >Samples Per Pixel (0028,0002) M/M >Photometric Interpretation (0028,0004) M/M >Rows (0028,0010) M/M >Columns (0028,0011) M/M >Pixel Aspect Ratio (0028,0034) MC/M Required when the ratio is not 1/1 >Bits Allocated (0028,0100) M/M >Memory Bit (Bits Stored) (0028,0101) M/M >High Bit (0028,0102) M/M >Pixel Representation (0028,0103) M/M >Pixel Data (7FE0,0010) M/M Polarity (2020,0020) U/M Magnification Type (2010,0060) U/U

Table 4 (continued)

Smoothing Type (2010,0080) U/U Min Density (2010, 0120) U/U Maximum Density (2010,0130) U/U Configuration Information (2010, 0150) U/U Requested Image Size (2020,0030) U/U Requested Decimate/Crop Behavior (2020,0040) U/U Related Expression LUT Sequence (Referenced Presentation LUT Sequence) (2050,0500) U/U >Related SOP Class UID (0008,1150) U/U >Related SOP Instance UID (0008, 1155) U/U

Note 1. The M/M in the table indicates that the SCU supports the DIMSE service but does not require it to be used on an association. The SCP supports the DIMSE service.

Note 2. U/U in the table indicates that the SCU can support and use the DIMSE service, and the SCP can support the DIMSE service; if the SCP does not support the SCU the DIMSE service used, which returns a failure status.

Note 3. U/M in the table indicates that the SCU can support and use the DIMSE service, and the SCP supports the DIMSE service.

5.4 Virtual printing information matching method

5.4.1 Matching Method 1

The service detected an inspection instance in the N-CREATE process in the film printing session or the N-SET process in the DICOM image box.

UID (Study Instance UID) field for film matching (see Appendix B for an example of an application scenario).

1) Check the instance UID (Study Instance UID) as matching information;

2) Correlate the matching information with the patient information in the business system (such as the PACS system), and finally print the film with the patient.

Files are associated and stored.

5.4.2 Matching method 2

The service does not detect the check instance UID in the N-CREATE process in the film print session and the N-SET process in the DICOM image box.

(Study Instance UID) field for film matching (see Appendix B for an example of an application scenario).

1) Parsing the received film DICOM file, extracting its image data, and extracting the image on the film image by image pattern recognition method Patient ID number (PatientID) and check flow number (AccessionNumber);

2) The identified patient ID number (PatientID), the inspection serial number (AccessionNumber), and the current time as matching information;

3) Associate the matching information with the patient information in the business system (such as PACS system) and confirm the consistency, and finally hit the patient's film Printed files are associated and stored.

The process requires that the technician must check the serial number (PatientID) and the accession number (AccessionNumber) when making a film print layout.

Displayed on the film layout.

Appendix A

(informative appendix) Medical digital image virtual printing interaction specification process example in order to more specifically describe the information specified in this specification during the virtual printing SCU and SCP interaction process, an example illustrates.

The information of a patient's StudyInstanceUID is 1.2.826.0.1.3680043.2.461.555, and the basic communication process is shown in Figure A.1.

-1 Print SCU sends DCIOM Film Session N-CREATE to print SCP-2 Print SCU sends DICOM Presentation LUT N-CREATE to the print SCP-3 Print SCU sends DICOM Film Box N-CREATE to print SCP-4 Print SCU sends DICOM Image Box N-SET to print SCP-5 Print SCU sends DICOM Film Box N-ACTION to print SCP-6 Print SCU sends DICOM Film Session N-ACTION to the print SCP-7 Print SCU sends DICOM Film Box N-DELETE to print SCP-8 Print SCU sends DICOM Film Session N-DELETE to the print SCP-9 Print SCU to get the DICOM N-EVENT-REPROT sent by the print SCP-10 printing SCU release connection

Figure A.1 Medical digital image virtual printing interaction flow chart

The detailed description of each interaction link in Figure A.1 according to this specification is as follows.

-1 means that the print SCU sends a DCIOM Film Session N-CREATE to the print SCP, and the patient field information needs to be.

0020,000D (StudyInstanceUID) UI. 1.2.826.0.1.3680043.2.461.555;

-2 indicates that the print SCU sends a DICOM Presentation LUT N-CREATE to the print SCP;

-3 means that the print SCU sends DICOM Film Box N-CREATE to the print SCP, and the patient field information needs to be.

0020,000D (StudyInstanceUID) UI. 1.2.826.0.1.3680043.2.461.555;

-4 means that the print SCU sends the DICOM Image Box N-SET to the print SCP, and the patient field information needs to be.

0020,000D (StudyInstanceUID) UI. 1.2.826.0.1.3680043.2.461.555;

print

SCU

print

SCP

The sample pseudo code is as follows.

A-ASSOCIATE

N-GET (PRINTER SOP Instance) N-CREATE (Film Session SOP Instance)// must contain 0020,000D. 1.2.826.0.1.3680043.2.461.555 for (each film of film session) N-CREATE (Film Box SOP Instance)// need to include 0020,000D. 1.2.826.0.1.3680043.2.461.555 for (each image of film) N-SET (Image Box SOP Instance that encapsulates a PREFORMATTED IMAGE SOP Instance) //Need to include 0020,000D. 1.2.826.0.1.3680043.2.461.555 If (no collation) N-ACTION (PRINT, Film Box SOP Instance) N-DELETE (Film Box SOP Instance) If (collation) N-ACTION (PRINT, Film Session SOP Instance) N-DELETE (Film Session SOP Instance) N-EVENT-REPORT (PRINTER SOP Instance) A- RELEASE Appendix B (informative appendix) Medical digital image interaction specification application scenario example 1. The DICOM client (such as a radiology device) sends the image data to be printed to the virtual print, and the virtual print receives the data and stores the data.

At the same time, through the virtual printing information matching method 1, the index information is established for the received data, and when the patient needs to take the film, the query can be to print out the current patient film immediately.

2. The DICOM client (such as a radiology device) sends the image data to be printed to the virtual print, and the virtual print receives the data and stores the data.

At the same time, through the virtual printing information matching method 2, the index information is established for the received data, and when the patient needs to take the film, the query can be to print out the current patient film.