----

| Registrant’s Subsidiaries                  |         | PercentageOwnership |         | State ofIncorporation |
|-------------------------------------------------------|--------------|---------------------|--------------|----------------------------|
|                                                  |         |                |         |                       |
| Radnet Management, Inc.                               |         | 100%                |         | California                 |
| Radnet Managed Imaging Services, Inc.                 |         | 100%                |         | California                 |
| Radnet Management I, Inc.                             |         | 100%                |         | California                 |
| Radnet Management II, Inc.                            |         | 100%                |         | California                 |
| Radnet Sub, Inc.                                      |         | 100%                |         | California                 |
| FRI II, Inc.                                          |         | 100%                |         | California                 |
| FRI, Inc.                                             |         | 100%                |         | California                 |
| Pacific Imaging Partners, Inc.                        |         | 100%                |         | California                 |
| Rolling Oaks Imaging Corporation                      |         | 100%                |         | California                 |
| Rolling Oaks Radiology, Inc.                          |         | 100%                |         | California                 |
| SoCal MR Site Management, Inc.                        |         | 100%                |         | California                 |
| Valley Imaging Partners Inc.                          |         | 100%                |         | California                 |
| Advanced Imaging Partners, Inc.                       |         | 100%                |         | Delaware                   |
| Advanced NA, LLC                                      |         | 100%                |         | Delaware                   |
| Community Imaging Partners, Inc.                      |         | 100%                |         | Delaware                   |
| Delaware Imaging Partners, Inc.                       |         | 100%                |         | Delaware                   |
| Diagnostic Imaging Services, Inc.                     |         | 100%                |         | Delaware                   |
| Ide Imaging Partners, Inc.                            |         | 100%                |         | Delaware                   |
| Image Medical Corporation                             |         | 100%                |         | Delaware                   |
| Mid Rockland Imaging Partners, Inc.                   |         | 100%                |         | Delaware                   |
| Radiologix, Inc.                                      |         | 100%                |         | Delaware                   |
| Radiology and Nuclear Medicine Imaging Partners, Inc. |         | 100%                |         | Delaware                   |
| Treasure Coast Imaging Partners, Inc.                 |         | 100%                |         | Delaware                   |
| Questar Imaging, Inc.                                 |         | 100%                |         | Florida                    |
| Questar Los Alamitos,Inc.                             |         | 100%                |         | Florida                    |
| Questar Victorville, Inc.                             |         | 100%                |         | Florida                    |
| Advanced Radiology, LLC                               |         | 100%                |         | Maryland                   |
| Imaging On Call, LLC                                  |         | 100%                |         | New York                   |
| East Bergen Imaging, LLC                              |         | 100%                |         | New Jersey                 |
| Health Diagnostics of New Jersey, LLC                 |         | 100%                |         | New Jersey                 |
| New Jersey Imaging Partners, Inc.                     |    | 100%                |    | New Jersey                 |
| Progressive Medical Imaging of Bloomfield, LLC        |         | 100%                |         | New Jersey                 |
| Progressive Medical Imaging of Hackensack, LLC        |         | 100%                |         | New Jersey                 |
| Progressive Medical Imaging of Union City, LLC        |         | 100%                |         | New Jersey                 |
| Progressive X-Ray of Englewood, LLC                   |         | 100%                |         | New Jersey                 |
| Progressive X-Ray of Kearney, LLC                     |         | 100%                |         | New Jersey                 |
| eRad, Inc.                                            |         | 100%                |         | Pennsylvania               |