Press Release dated

Year and Fourth Quarter 2012 Results and Releases 2013 Financial Guidance

California., March 12, 2013 - RadNet, Inc. (NASDAQ: RDNT), a national leader in providing high-quality, cost-effective,

fixed-site outpatient diagnostic imaging services through a network of 246 owned and/or operated outpatient imaging centers (inclusive

of 23 facilities held in Joint Ventures), today reported financial results for its fourth quarter and full year ended December

For full year 2012, the Company reported

Revenue, Adjusted EBITDA(1) and Net Income of $673.1 million, $113.6 million and $64.5 million, respectively. Revenue

increased $65.6 million (or 10.8%), Adjusted EBITDA(1) decreased $1.9 million (or 1.7%) and Net Income increased

$57.3 million, respectively, from full year 2011 results. Net Income for 2012 was $1.64 per diluted share, compared to Net Income

of $0.19 per diluted share in 2011 (based upon a weighted average number of diluted shares outstanding of 39.2 million and 38.8

million in 2012 and 2011, respectively).

During the year, we recorded an income tax benefit of $59.5

million primarily related to the reversal of a valuation allowance against our deferred tax assets recorded in the fourth quarter.

We consider all evidence available when determining whether deferred tax assets (primarily created by our historical Net Operating

Losses, or NOLs), are more likely-than-not to be realized. This evidence included forecasted future taxable income, the future

reversal of temporary differences and tax planning strategies that would be employed to prevent our NOLs from expiring unutilized.

As of December 31, 2012, after analyzing all relevant evidence, including our recent historical trend of producing pretax income,

we determined that it is more-likely-than-not that we will utilize most of our NOLs in the future. As a result, the reversal of

the valuation allowance resulted in our recognizing $60.7 million of income tax benefit and a corresponding net deferred tax asset

of $60.4 million on our balance sheet during the fourth quarter of 2012. Excluding this benefit, our Net Income would have been

$3.8 million, or $0.10 per diluted share.

Net Income in 2012 were certain non-cash expenses and non-recurring items including: a $2.8 million gain from the de-consolidation

of a joint venture; $2.7 million of non-cash employee stock compensation expense resulting from the vesting of certain options,

warrants and restricted stock; $736,000 of severance paid in connection with headcount reductions related to cost savings

initiatives from previously announced acquisitions; $456,000 loss on the disposal of certain capital equipment; $3.6

million of amortization of Deferred Financing Fees and discount on issuance of debt related to our existing credit facilities and

senior unsecured notes; $531,000 of non-capitalized expenses related to our refinancing completed on October 10, 2012; $468,000

of non-recurring items included in Other Income (Loss) including legal settlements, purchase gains and certain impairments; and

$4.1 million fair value gain from our interest rate swaps, net of the amortization of an Accumulated Comprehensive Loss existing

prior to April 6, 2010.

For the year ended December 31, 2012, as

compared to 2011, MRI volume increased 14.6%, CT volume increased 14.3% and PET/CT volume increased 12.2%. Overall volume, taking

into account routine imaging exams, inclusive of x-ray, ultrasound, mammography and other exams, increased 10.5% for the twelve

months of 2012 over 2011.

Fourth Quarter Report:

For the fourth quarter of 2012, RadNet

reported Revenue, Adjusted EBITDA(1) and Net Income of $165.8 million, $24.5 million and $56.6 million, respectively.

Revenue increased $4.4 million (or 2.7%), Adjusted EBITDA(1) decreased $7.8 million (or 24.2%) and Net Income

increased $52.1 million over the fourth quarter of 2011.

Excluding the $60.7 million income tax benefit recognized in

the fourth quarter, our Net Loss would have been $4.0 million, or ($0.11) per share. This compares with a Net Income of $0.12 per

diluted share in the fourth quarter of 2011 (based upon a weighted average number of shares outstanding of 38.3 million and 38.1

million for these periods in 2012 and 2011, respectively).

Affecting Adjusted EBITDA(1) in the fourth quarter

were the following: (i) estimated $3.5 million negative impact from downtime of our northeastern facilities and loss of business

from Hurricane Sandy; (ii) estimated $1.5 million negative impact from two additional work days affected by Christmas and New Year's

holidays in this year's fourth quarter relative to the same quarter last year; (iii) approximately $1.5 million of negotiated

future payments from private payors for underpayments on 2012 services that will be recognized throughout 2013 (and not recorded

in 2012); and (iv) $1 million of salary expense paid in lieu of future salary increases. Adjusting for these non-recurring fourth

quarter events, Adjusted EBITDA(1) would have been $32.0 million.

above impacts on Adjusted EBITDA(1), also affecting Net Income in the fourth quarter of 2012 were certain non-cash expenses

and non-recurring items including: $597,000 of non-cash employee stock compensation expense resulting from the vesting of certain

options, warrants and restricted stock; $58,000 of severance paid in connection with headcount reductions related to cost

savings initiatives from previously announced acquisitions; $201,000 loss on the disposal of certain capital equipment; $1.1

million of amortization of Deferred Financing Fees and discount on issuance of debt related to our existing credit facilities and

senior unsecured notes; $531,000 of non-capitalized expenses related to our refinancing completed on October 10, 2012; $449,000

of non-recurring items included in Other Income (Loss) including legal settlements, purchase gains and certain impairments; and

$736,000 fair value gain from our interest rate swaps, net of the amortization of an Accumulated Comprehensive Loss existing prior

For the fourth quarter of 2012, as compared

with the prior year's fourth quarter, MRI volume increased 1.5%, CT volume increased 1.0% and PET/CT volume increased 8.3%.

Overall volume, taking into account routine imaging exams, inclusive of x-ray, ultrasound, mammography and other exams, decreased

0.5% over the prior year's fourth quarter. On a same-center basis, including only those centers which were part of RadNet

for both the fourth quarters of 2012 and 2011, MRI volume decreased 4.1%, CT volume decreased 2.4% and PET/CT volume increased

1.3%. Overall same-center volume, taking into account routine imaging exams, inclusive of x-ray, ultrasound, mammography and other

exams, decreased 4.1% over the prior year's same quarter. The overall and same center procedural volumes were impacted significantly

from the effects of Hurricane Sandy. Excluding east coast operations, total California procedural volumes increased 5.2% during

the fourth quarter of 2012 as compared with the same period in 2011.

Dr. Howard Berger, President and Chief

Executive Officer of RadNet, commented "We faced a very challenging fourth quarter. The bulk of our east coast operations

were impacted significantly by Hurricane Sandy and its aftermath. This negatively affected our financial performance in the fourth

quarter of 2012 and contributed to our falling short of our projected targets for the year. Even though we were able to expediently

restore operations to many of our sites which had lost power during the storm, our medical communities and referring physicians

were impacted for several weeks following the storm. In numerous instances patients found themselves without power to their homes

or gasoline in their cars for days and weeks following the storm. Exam cancellations were routine, and our available appointment

slots were simply lost during the quarter. Also, in this year's fourth quarter, Christmas and New Year's fell on Tuesdays

as compared with these holidays in 2011, which fell on Sundays. As a result, we estimate that we effectively lost two additional

workdays. Although our centers were closed for the holidays in both periods the same amount of days (2 days), patient volumes were

extraordinarily light on the open days of Monday, December 24, 2012 and Monday, December 31, 2012."

"While I'm disappointed in

how 2012 ended, I'm very encouraged that prior to the fourth quarter, we were on track to meet our 2012 targeted metrics.

The fourth quarter was anomalous, particularly on the East Cost. In fact, excluding the east coast operations effected by Hurricane

Sandy, our California operations for the fourth quarter grew over 5% in procedural volumes relative to the fourth quarter of last

year. For all operations, excluding the non-recurring impacts within the fourth quarter of 2012, the financials results would have

been on par with last year's fourth quarter," Dr. Berger added.

Dr. Berger continued, "Putting the

fourth quarter behind us, we remain very excited about 2013. We completed the acquisition of Lenox Hill Radiology, which began

contributing to RadNet as of January 1st. We are pleased to have entered the Manhattan, NY marketplace, where we have

identified many other opportunities to expand and grow our practice. We see Manhattan becoming a core market for RadNet in the

near future. Our Information Technology initiatives are also progressing. We have accelerated our installation of voice recognition

transcription and our Meaningful Use certified eRAD RIS and PACs products throughout the RadNet network. We anticipate enjoying

significant cost savings and operating efficiencies during 2013 from these IT projects."

Actual 2012 Results vs. 2012 Guidance:

The following compares the Company's

actual 2012 performance with previously announced guidance levels.

Dr. Berger commented, "Prior to the

fourth quarter, we were within or approaching all of our guidance levels. Unfortunately, the non-recurring impacts caused us to

fall short of our Adjusted EBITDA(1) and Free Cash Flow Guidance levels, metrics that are inter-related."

2013 Fiscal Year Guidance

For its 2013 fiscal year, RadNet announces