MicroDicom PACS Setup Guide

For Sales Representatives & Field Engineers — Unetixs Vascular, Inc.

Contents

  1. Overview — What This Does
  2. Download & Install MicroDicom
  3. Configure MicroDicom as PACS Receiver
  4. Configure UnetDICOM (S2WIN Side)
  5. Test: Export From S2WIN to MicroDicom
  6. Verify the Image in MicroDicom
  7. Troubleshooting — Common Errors & Fixes
  8. Connecting to a Real Hospital PACS
  9. Pre-Demo Checklist
  10. Quick Reference Card

1 Overview — What This Does

MicroDicom is a free, lightweight DICOM viewer that also works as a mini PACS server. By installing it on your demo laptop, you can show customers the full export chain:

S2WIN (capture study) → UnetDICOM (DICOM export) → MicroDicom (PACS viewer)
Patient name, ID, DOB, waveforms — all arrive at the "PACS" for doctor review

This is the same chain that connects to a real hospital PACS (GE, Philips, Fuji, etc.). MicroDicom just replaces the hospital PACS for demo/testing purposes.

2 Download & Install MicroDicom

  1. Go to https://www.microdicom.com/downloads.html
  2. Download the MicroDicom DICOM Viewer installer (free version is fine)
  3. Run the installer — accept all defaults
  4. Install location will be: C:\Program Files (x86)\MicroDicom\
  5. Launch MicroDicom after install to verify it opens
Note: You do NOT need the paid version. The free MicroDicom viewer includes the DICOM SCP (PACS receiver) feature we need.

3 Configure MicroDicom as PACS Receiver

Enable the DICOM Server (SCP)

  1. Open MicroDicom
  2. Go to Options → DICOM Network (or Tools → DICOM depending on version)
  3. Click the Local (SCP) tab or Listening tab
  4. Configure these exact settings:
    SettingValue
    AE TitleMICRODICOM
    Port11112
    Enable / Start ListeningChecked / ON
  5. Click OK / Apply
  6. You should see a status indicator showing the server is listening
Important: The AE Title must be MICRODICOM (all uppercase, no spaces). This must match exactly what you enter in UnetDICOM on the S2WIN side.
Windows Firewall: If Windows asks "Allow MicroDicom through firewall?" — click Allow. If you accidentally blocked it, go to:
Control Panel → Windows Firewall → Allow an app → Add mDicom.exe
Also ensure port 11112 is open for inbound TCP connections.

4 Configure UnetDICOM (S2WIN Side)

Open UnetDICOM

On the S2WIN machine, open the DICOM configuration tool:

C:\Program Files\UnetDICOM.exe

Or from S2WIN: Setup → System Data → DICOM Setup

SCP Tab — PACS Destination Settings

This is where you tell S2WIN where to send DICOM images. Configure the first SCP slot:

FieldValueNotes
SCP NameMICRODICOMSelect the first slot in the list
Application Entity TitleMICRODICOMMust match MicroDicom's AE Title exactly
IP Address127.0.0.1Use 127.0.0.1 if same machine, or laptop's IP if separate
Port Number11112Must match MicroDicom's listening port
Maximum PDU Size16kDefault is fine
SendSend to SCPMust be set to Send to SCP
Timeout120 secondsIncrease to 300 if on slow network
Photometric InterpretationRGBDefault
Reduction25%Image size reduction. Use 0% for full quality
JPEG Quality100%Maximum quality for demos
Screenshot: UnetDICOM SCP Tab
This is exactly how the SCP tab should look when configured for MicroDicom:
Configuration — SCP Tab
SCP:MICRODICOM
AE Title:MICRODICOM
IP Address:127 . 0 . 0 . 1
Port:11112
PDU Size:16k
Send:Send to SCP
Timeout:120 seconds
UnetDICOM SCP Tab — PACS destination configured for MicroDicom on localhost

Transfer Syntax — Right Side of SCP Tab

The Transfer Syntax list on the right side of the SCP tab controls how images are compressed. The highlighted (blue) entries are enabled.

Transfer SyntaxUIDStatus
Implicit VR Little Endian1.2.840.10008.1.2MUST BE ENABLED
Explicit VR Little Endian1.2.840.10008.1.2.1Recommended
Explicit VR Big Endian1.2.840.10008.1.2.2Optional
JPEG Baseline1.2.840.10008.1.2.4.50Recommended
JPEG Extended1.2.840.10008.1.2.4.51Optional
JPEG Lossless1.2.840.10008.1.2.4.70Optional
Critical: Implicit VR Little Endian (1.2.840.10008.1.2) MUST be enabled (highlighted blue). This is the mandatory DICOM default — if disabled, strict PACS systems will reject the connection. Double-click to enable/disable entries in the list.

SCU Tab — Our Machine Identity

The SCU tab identifies our S2WIN machine to the PACS.

FieldValueNotes
SCU AE TitleUNETIXSOur machine's DICOM name (uppercase)
Archive PathC:\Programs\Where UTX export files are stored

For hospital installations, the AE Title may need to match what the hospital PACS admin configured. Ask them: "What AE Title did you add for our device?"

Identifier Tab — Machine UID

The Identifier tab contains the Machine UID used for generating unique DICOM identifiers. Every machine must have a unique UID.

If Machine UID is blank or zero: DICOM export will fail with "UID file error." Enter a unique number (e.g., serial number of the machine) and click OK. This creates C:\Programs\Patient.dat.

5 Test: Export From S2WIN to MicroDicom

Step-by-Step Export

  1. Make sure MicroDicom is running and its DICOM server is listening (you should see a green indicator or "Listening on port 11112")
  2. In S2WIN, open or run any study (e.g., ABI Exam). Enter patient info:
    Name: TEST PATIENT   ID: 12345   DOB: 01/01/1980
  3. Complete at least one capture (or use an existing study from Temp Files)
  4. Go to Main Menu → Temp Files
  5. Select the exam you want to export
  6. Click PACS
  7. Choose DICOM format
  8. Select Export Page (or Export Patient for all pages)
  9. Wait for the "Success" message
Success! If you see "Success" in S2WIN, the image was sent to MicroDicom. Switch to MicroDicom — the patient should appear in the study list.

6 Verify the Image in MicroDicom

  1. Switch to MicroDicom
  2. The new study should appear in the patient list (may need to refresh)
  3. Double-click the patient to open the study
  4. Verify the following fields match what you entered in S2WIN:
    DICOM FieldExpected Value
    Patient NameTEST PATIENT
    Patient ID12345
    Study DateToday's date
    ModalityUS (Ultrasound)
    InstitutionYour facility name (from THE END record)
  5. The image should show the S2WIN report page (waveforms, pressures, ABI table, etc.)

7 Troubleshooting — Common Errors & Fixes

DICOM Export Error Codes

If S2WIN shows an error instead of "Success," look up the code below:

ErrorMessageCauseFix
1010 Failed to Create Socket Windows Firewall blocking Add UnetDICOM.exe to Windows Firewall exceptions. Allow port 11112 inbound.
1011 Failed to connect at TCP level MicroDicom not running, wrong IP, or port blocked 1. Verify MicroDicom is open and listening.
2. Check IP address (127.0.0.1 for same machine).
3. Check port matches (11112).
4. Try: ping 127.0.0.1 from command prompt.
1013 Remote Socket Disconnected AE Title mismatch — MicroDicom rejected us Verify AE Title in UnetDICOM SCP tab is exactly MICRODICOM (all caps, no spaces). Must match what MicroDicom expects.
1049 Association Request Rejected PACS doesn't recognize our AE Title The receiving PACS has not been configured to accept connections from us. Add our AE Title to the PACS allowed list.
1062 Unsupported Transfer Syntax PACS doesn't support our compression Enable Implicit VR Little Endian in UnetDICOM Transfer Syntax list (double-click to enable).
1403 Unable to listen on port Port 11112 already in use Another program is using port 11112. Check with netstat -an | findstr 11112. Close the conflicting app or use a different port.
1406/1407 Timed out Network too slow or PACS overloaded Increase timeout in UnetDICOM SCP tab (try 300 seconds). Check network connection.

"UID file error" on Export

Problem: S2WIN shows "UID file error" and export fails.

Cause: C:\Programs\Patient.dat does not exist. This file stores the Machine UID needed to generate unique DICOM identifiers.

Fix:

  1. Open UnetDICOM.exe
  2. Go to the Identifier tab
  3. Enter a unique number in the Machine UID field (e.g., the machine serial number)
  4. Click OK
  5. Retry the export

"Success" But No Image in MicroDicom

If S2WIN says Success but MicroDicom doesn't show the patient:

  1. Click Refresh in MicroDicom's patient list
  2. Check MicroDicom's storage folder — look for new .dcm files
  3. If files exist but don't show, the DICOM header may have an issue. Open the .dcm file in MicroDicom directly via File → Open

Quick Diagnostic Commands

Open a Command Prompt (cmd.exe) and run these:

:: Check if MicroDicom is listening on port 11112 netstat -an | findstr 11112 :: Expected output (if listening): TCP 0.0.0.0:11112 0.0.0.0:0 LISTENING :: Check if S2WIN machine can reach the PACS ping 127.0.0.1 :: Check if port is reachable (from another machine) telnet 192.168.1.100 11112

8 Connecting to a Real Hospital PACS

When installing at a hospital (instead of demo with MicroDicom), the steps are the same — just replace the MicroDicom settings with the hospital's PACS info:

Information You Need From Hospital IT / PACS Admin

SettingWho Provides ItExample
PACS IP AddressHospital IT10.0.50.100
PACS PortHospital IT104 (standard) or 11112
PACS AE TitlePACS AdminGEPACS, PHILIPSPACS, etc.
Our AE TitlePACS Admin assignsUNETIXS or MULTILAB

The 4-Step Hospital Setup

  1. Hospital IT: Assigns IP address on the medical device VLAN. Opens firewall port (104 or 11112, bidirectional TCP).
  2. PACS Admin: Adds our AE Title to the PACS allowed device list. Without this, we get Error 1049 (rejected).
  3. Us (UnetDICOM SCP tab): Enter PACS IP, Port, AE Title. Set our SCU AE Title to what the PACS admin assigned.
  4. Test: Run a test export. Both sides should confirm success.
Common Hospital Issue: AE Title Mismatch
The #1 reason for failed installations is the AE Title not matching between our config and the PACS. It is case-sensitive and must match exactly — including spaces (avoid spaces). Always confirm with the PACS admin: "What exact AE Title did you configure for our device?"

9 Pre-Demo Checklist

Before heading to a demo or installation, verify:

10 Quick Reference Card

MicroDicom + S2WIN — Quick Reference

MicroDicom (PACS Receiver)
AE TitleMICRODICOM
Port11112
Server StatusMust be Listening
UnetDICOM SCP Tab (S2WIN Sender)
SCP NameMICRODICOM
AE TitleMICRODICOM
IP Address127.0.0.1 (same machine) or target IP
Port11112
PDU Size16k
Timeout120 seconds
JPEG Quality100%
S2WIN Export Path
1Main Menu → Temp Files
2Select the exam
3Click PACS
4Choose DICOM
5Select Export Page (or Patient/All)
6Wait for "Success"
Key Files (S2WIN Machine)
C:\Programs\Patient.datMachine UID (REQUIRED for export)
C:\Programs\DICOM0.cfgDICOM tag blueprint (text file)
C:\Program Files\UnetDICOM.exeDICOM configuration tool
Unetixs Vascular, Inc. — MicroDicom PACS Setup Guide v1.0
For internal use by Sales Representatives and Field Engineers