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|   EXHIBIT 12.1                               |
|---------------------------------------------------|
| RADNET, INC. AND SUBSIDIARIES                     |
| COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES |
| (in thousands)                                    |
| (unaudited)                                       |

|                                                                                 |   | Years Ended  |    |
|--------------------------------------------------------------------------------------|--------|--------------|---------|
|                                                                                 |   | December 31, |    |
|                                                                                 |   | 2010         |    |   | 2009 |   |   | 2008 |   |
|                                                                                 |   |         |    |   |   |   |   |   |   |
| Earnings:                                                                            |   |         |    |   |   |   |   |   |   |
| Pre-tax net loss(1)                                                                  |   |         | (12,109 | ) |   |   | (1,732 | ) |   |   | (12,582 | ) |
| Less: Equity in earnings of unconsolidated joint ventures                            |   |         | (8,230  | ) |   |   | (8,456 | ) |   |   | (9,791 | ) |
| Plus: Distributions from unconsolidated joint ventures                               |   |         | 10,917  |   |   |   | 7,667 |   |   |   | 7,982 |   |
| Fixed Charges                                                                        |   |         | 63,460  |   |   |   | 57,521 |   |   |   | 66,302 |   |
| Total adjusted earnings                                                              |   |         | 54,038  |   |   |   | 55,000 |   |   |   | 51,911 |   |
|                                                                                 |   |         |    |   |   |   |   |   |   |   |   |   |
| Fixed charges:                                                                       |   |         |    |   |   |   | - |   |   |   |   |   |
| Interest expense (including debt issue costs amortized to interest expense)          |   |         | 48,398  |   |   |   | 49,193 |   |   |   | 51,811 |   |
| Write-off of debt issue costs                                                        |   |         |    |   |   |   |   |   |   |   |   |   |
| Portion of rent expense representative of the interest factor (2)                    |   |         | 15,979  |   |   |   | 14,447 |   |   |   | 14,491 |   |
| Fair value adjustments of cash flow hedges reclassified from OCI to interest expense |   |         | (917    | ) |   |   | (6,119 | ) |   |   | - |   |
| Total fixed charges                                                                  |   |         | 63,460  |   |   |   | 57,521 |   |   |   | 66,302 |   |
|                                                                                 |   |         |    |   |   |   |   |   |   |   |   |   |
| Ratio of earnings to fixed charges                                                   |   |         | 0.85    |   |   |   | 0.96 |   |   |   | 0.78 |   |
| Additional earnings required to have a one-to-one ratio of earnings to fixed charges |   | $            | 9,422   |   |   | $ | 2,521 |   |   | $ | 14,391 |   |
|                                                                                 |   |         |    |   |   |   |   |   |   |   |   |   |

| (1) | Excludes net income attributable to noncontrolling interests |
|-----|--------------------------------------------------------------|

| (2) | Represents one-third of operating lease costs, which approximates the portion that relates to the interest portion |
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