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|   | RADNET      MANAGEMENT, INC.                                         |
|--------|----------------------------------------------------------------------|
|   |                                                                 |   |
|   | By:                                                                  | /s/      Howard G. Berger |
|   | Name:                                                      | Howard      G. Berger, M.D. |
|   | Title:                                                               | President |
|   |                                                                 |   |
|   |                                                                 |   |
|   | RADNET,      INC.                                                    |
|   |                                                                 |   |
|   | By:                                                                  | /s/      Howard G. Berger |
|   | Name:                                                                | Howard      G. Berger, M.D. |
|   | Title:                                                               | President |
|   |                                                                 |   |
|   |                                                                 |   |
|   | BEVERLY      RADIOLOGY MEDICAL GROUP III                             |
|   |                                                                 |   |
|   | By:      ProNet Imaging Medical Group, Inc., its general partner     |
|   |                                                                 |   |
|   | By:                                                                  | /s/      Howard G. Berger |
|   | Name:                                                                | Howard      G. Berger, M.D. |
|   | Title:                                                               | President |
|   |                                                                 |   |
|   |                                                                 |   |
|   | By:      Beverly Radiology Medical Group, Inc., its general  partner |
|   |                                                                 |   |
|   | By:                                                                  | /s/      Howard G. Berger |
|   | Name:                                                                | Howard      G. Berger, M.D. |
|   | Title:                                                               | President |
|   |                                                                 |   |
|   |                                                                 |   |
|   | PRONET      IMAGING MEDICAL GROUP, INC.                              |
|   |                                                                 |   |
|   | By:                                                                  | /s/      Howard G. Berger |
|   | Name:                                                                | Howard      G. Berger, M.D. |
|   | Title:                                                               | President |

----

|   | BEVERLY      RADIOLOGY MEDICAL GROUP, INC. |
|--------|--------------------------------------------|
|   |                                       |   |
|   | By:                                        | /s/      Howard G. Berger |
|   | Name:                                 | Howard      G. Berger, M.D. |
|   | Title:                                     | President |
|   |                                       |   |
|   |                                       |   |
|   | RADNET      SUB, INC.                      |
|   |                                       |   |
|   | By:                                        | /s/      Howard G. Berger |
|   | Name:                                      | Howard      G. Berger, M.D. |
|   | Title:                                     | President |
|   |                                       |   |
|   |                                       |   |
|   | SO      CAL MR SITE MANAGEMENT, INC.       |
|   |                                       |   |
|   | By:                                        | /s/      Howard G. Berger |
|   | Name:                                      | Howard      G. Berger, M.D. |
|   | Title:                                     | President |
|   |                                       |   |
|   |                                       |   |
|   | RADNET      MANAGEMENT I, INC.             |
|   |                                       |   |
|   | By:                                        | /s/      Howard G. Berger |
|   | Name:                                      | Howard      G. Berger, M.D. |
|   | Title:                                     | President |
|   |                                       |   |
|   |                                       |   |
|   | RADNET      MANAGEMENT II, INC.            |
|   |                                       |   |
|   | By:                                        | /s/      Howard G. Berger |
|   | Name:                                      | Howard      G. Berger, M.D. |
|   | Title:                                     | President |
|   |                                       |   |
|   |                                       |   |
|   | RADNET      MANAGED IMAGING                |
|   | SERVICES,      INC.                        |
|   |                                       |   |
|   | By:                                        | /s/      Howard G. Berger |
|   | Name:                                      | Howard      G. Berger, M.D. |
|   | Title:                                     | President |

----

|   | DIAGNOSTIC      IMAGING SERVICES, INC.   |
|--------|------------------------------------------|
|   |                                     |   |
|   | By:                                      | /s/      Howard G. Berger |
|   | Name:                               | Howard      G. Berger, M.D. |
|   | Title:                                   | President |
|   |                                     |   |
|   |                                     |   |
|   | RADIOLOGIX,      INC.                    |
|   |                                     |   |
|   | By:                                      | /s/      Howard G. Berger |
|   | Name:                                    | Howard      G. Berger, M.D. |
|   | Title:                                   | President |
|   |                                     |   |
|   |                                     |   |
|   | ADVANCED      IMAGING PARTNERS, INC.     |
|   |                                     |   |
|   | By:                                      | /s/      Howard G. Berger |
|   | Name:                                    | Howard      G. Berger, M.D. |
|   | Title:                                   | President |
|   |                                     |   |
|   |                                     |   |
|   | IDE      IMAGING PARTNERS, INC.          |
|   |                                     |   |
|   | By:                                      | /s/      Howard G. Berger |
|   | Name:                                    | Howard      G. Berger, M.D. |
|   | Title:                                   | President |
|   |                                     |   |
|   |                                     |   |
|   | MID      ROCKLAND IMAGING PARTNERS, INC. |
|   |                                     |   |
|   | By:                                      | /s/      Howard G. Berger |
|   | Name:                                    | Howard      G. Berger, M.D. |
|   | Title:                                   | President |

----

|   | PACIFIC      IMAGING PARTNERS, INC.                        |
|--------|------------------------------------------------------------|
|   |                                                       |   |
|   | By:                                                        | /s/      Howard G. Berger |
|   | Name:                                                 | Howard      G. Berger, M.D. |
|   | Title:                                                     | President |
|   |                                                       |   |
|   |                                                       |   |
|   | QUESTAR      IMAGING, INC.                                 |
|   |                                                       |   |
|   | By:                                                        | /s/      Howard G. Berger |
|   | Name:                                                      | Howard      G. Berger, M.D. |
|   | Title:                                                     | President |
|   |                                                       |   |
|   |                                                       |   |
|   | TREASURE      COAST IMAGING PARTNERS, INC.                 |
|   |                                                       |   |
|   | By:                                                        | /s/      Howard G. Berger |
|   | Name:                                                      | Howard      G. Berger, M.D. |
|   | Title:                                                     | President |
|   |                                                       |   |
|   |                                                       |   |
|   | COMMUNITY      IMAGING PARTNERS, INC.                      |
|   |                                                       |   |
|   | By:                                                        | /s/      Howard G. Berger |
|   | Name:                                                      | Howard      G. Berger, M.D. |
|   | Title:                                                     | President |
|   |                                                       |   |
|   |                                                       |   |
|   | RADIOLOGY      AND NUCLEAR MEDICINE IMAGING PARTNERS, INC. |
|   |                                                       |   |
|   | By:                                                        | /s/      Howard G. Berger |
|   | Name:                                                      | Howard      G. Berger, M.D. |
|   | Title:                                                     | President |

----

|   | VALLEY      IMAGING PARTNERS, INC.    |
|--------|---------------------------------------|
|   |                                  |   |
|   | By:                                   | /s/      Howard G. Berger |
|   | Name:                       | Howard      G. Berger, M.D. |
|   | Title:                                | President |
|   |                                  |   |
|   |                                  |   |
|   | QUESTAR      DULUTH, INC.             |
|   |                                  |   |
|   | By:                                   | /s/      Howard G. Berger |
|   | Name:                                 | Howard      G. Berger, M.D. |
|   | Title:                                | President |
|   |                                  |   |
|   |                                  |   |
|   | QUESTAR      LOS ALAMITOS, INC.       |
|   |                                  |   |
|   | By:                                   | /s/      Howard G. Berger |
|   | Name:                                 | Howard      G. Berger, M.D. |
|   | Title:                                | President |
|   |                                  |   |
|   |                                  |   |
|   | QUESTAR      VICTORVILLE, INC.        |
|   |                                  |   |
|   | By:                                   | /s/      Howard G. Berger |
|   | Name:                                 | Howard      G. Berger, M.D. |
|   | Title:                                | President |
|   |                                  |   |
|   |                                  |   |
|   | ROCKY      MOUNTAIN OPENSCAN MRI, LLC |
|   |                                  |   |
|   | By:                                   |   |
|   | Name:                                 |   |
|   | Title:                                |   |

----

|   | FRI,      INC.    |
|--------|-------------------|
|   |              |   |
|   | By:               | /s/      Howard G. Berger |
|   | Name:   | Howard      G. Berger, M.D. |
|   | Title:            | President |
|   |              |   |
|   |              |   |
|   | FRI      II, INC. |
|   |              |   |
|   | By:               | /s/      Howard G. Berger |
|   | Name:             | Howard      G. Berger, M.D. |
|   | Title:            | President |

----

|   | GENERAL      ELECTRIC CAPITAL |
|--------|-------------------------------|
|   | CORPORATION,                  |
|   | as      Agent and a Lender    |
|   |                          |   |
|   | By:                           | /s/      General Electric Capital Corporation |
|   |                          | Duly      Authorized Signatory |

----

|   | [INSERT      NAME OF LENDER], as a Lender |
|--------|-------------------------------------------|
|   |                                      |   |
|   | By:                                       |   |
|   | Name:                                     |   |
|   | Title:                                    |   |

----