EXHIBIT 3.61

                          CERTIFICATE OF INCORPORATION

                                       OF

                COMPREHENSIVE MEDICAL IMAGING - BAKERSFIELD, INC.

            The undersigned, a natural person, for the purpose of organizing a
corporation for conducting the business and promoting the purposes hereinafter
stated, under the provisions and subject to the requirements of the laws of the
State of Delaware (particularly Chapter 1, Title 8 of the Delaware Code and the
acts amendatory thereof and supplemental thereto, and known, identified, and
referred to as the "General Corporation Law of the State of Delaware"), hereby
certifies that:

            FIRST: The name of the corporation (hereinafter called the
"Corporation" is Comprehensive Medical Imaging - Bakersfield, Inc.

            SECOND: The address, including street, number, city, and county, of
the registered office of the Corporation in the State of Delaware is 9 East
Lockerman Street, City of Dover 19901, County of Kent; and the name of the
registered agent of the Corporation in the State of Delaware at such address is
National Registered Agents, Inc.

            THIRD: The purpose of the Corporation shall be to promote any lawful
act or activity for which corporations may be organized under the General
Corporation Law of the State of Delaware.

            FOURTH: The total number of shares which the Corporation shall have
authority to issue is 100. The par value of each of such shares is $.05. All
such shares are of one class and are shares of Common Stock.

            FIFTH: The name and the mailing address of the incorporator are as
follows:



     NAME                                   MAILING ADDRESS
- --------------                       ---------------------------
                                  
Robin Shadduck                       3396 Willow Lane, #200
                                     Westlake Village, CA  91361


            SIXTH: The Corporation is to have perpetual existence.

            SEVENTH: Whenever a compromise or arrangement is proposed between
this Corporation and its creditors or any class of them and/or between this
Corporation and its stockholders or any class of them any court of equitable
jurisdiction within the State of Delaware may, on the application in a summary
way of this Corporation or of any creditor or stockholder



thereof or on the application of any receiver or receivers appointed for this
Corporation under Section 291 of Title 8 of the Delaware Code or on the
application of trustees in dissolution or of any receiver or receivers appointed
for this Corporation under Section 279 of Title 8 of the Delaware Code order a
meeting of the creditors or class of creditors, and/or of the stockholders or
class of stockholders of this Corporation, as the case may be, to be summoned in
such manner as the said court directs. If a majority in number representing
three fourths in value of the creditors or class of creditors and/or of the
stockholders or class of stockholders of this Corporation, as the case may be,
to be summoned in such manner as the said court directs. If a majority in number
representing three fourths in value of the creditors or class of creditors,
and/or of the stockholders or class of stockholders of this Corporation, as the
case may be, agree to any compromise or arrangement and to any reorganization of
this Corporation as consequence of such compromise or arrangement, the said
compromise or arrangement and the said reorganization shall, if sanctioned by
the court to which the said application has been made, be binding on all the
creditors or class of creditors and/or on all the stockholders or class of
stockholders of this Corporation, as the case may be, and also on this
Corporation.

            EIGHTH: For the management of the business and for the conduct of
the affairs of the Corporation, and in further definition, limitation, and
regulation of the powers of the Corporation and of its directors and of its
stockholders or any class thereof, as the case may be, it is further provided:

            1. The management of the business and the conduct of the affairs of
      the Corporation shall be vested in its Board of Directors. The number of
      directors, which shall constitute the whole Board of Directors, shall be
      fixed by, or in the manner provided in, the Bylaws. No election of
      directors need be by written ballot.

            2. After the original or other Bylaws of the Corporation have been
      adopted, amended, or repealed, as the case may be,, in accordance with the
      provisions of Section 109 of the General Corporation Law of the State of
      Delaware, and, after the Corporation has received any payment for any of
      its stock, the power to adopt, amend, or repeal the Bylaws of the
      Corporation may be exercised by the Board of Directors of the Corporation;
      provided, however, that any provision for the classification of directors
      of the Corporation for staggered terms pursuant to the provisions of
      subsection (d) of Section 141 of the General Corporation Law of the State
      of Delaware shall be set forth in an initial Bylaw or in a Bylaw adopted
      by the stockholders entitled to vote of the Corporation unless provisions
      for such classification shall be set forth in this certificate of
      incorporation.

            3. Whenever the Corporation shall be authorized to issue only one
      class of stock, each outstanding share shall entitle the holder thereof to
      notice of, and the right to vote at, any meeting of stockholders. Whenever
      the Corporation shall be authorized to issue more than one class of stock,
      no outstanding share of any class of stock which is denied voting power
      under the provisions of this certificate of incorporation shall entitle
      the holder thereof to the right to vote at any meeting of stockholders,
      except as the provisions of paragraph (2) of

                                       2


      subsection (p) of Section 242 of the General Corporation Law of the State
      of Delaware shall otherwise require; provided that no share of any such
      class which is otherwise denied voting power shall entitle the holder
      thereof to vote upon the increase or decrease in the number of authorized
      shares of said class.

            NINTH: The personal liability of the directors of the Corporation is
hereby eliminated to the fullest extent permitted by the provisions of paragraph
(7) of subsection (b) of Section 102 of the General Corporation Law of the State
of Delaware, as the same may be amended and supplemented.

            TENTH: The Corporation shall, to the fullest extent permitted by the
provisions of Section 145 of the General Corporation Law of the State of
Delaware, as the same may be amended and supplemented, indemnify any and all
persons whom it shall have power to indemnify under said section from and
against any and all of the expenses, liabilities, or other matters referred to
in or covered by said section, and the indemnification provided for herein shall
not be deemed exclusive of any other rights to which those indemnified may be
entitled under any Bylaw, agreement, vote of stockholders or disinterested
directors or otherwise, both as to action in his official capacity and as to
action in another capacity while holding such office, and shall continue as to a
person who has ceased to be a director, officer, employee, or agent and shall
inure to the benefit of the heirs, executors, and administrators of such a
person.

            ELEVENTH: From time to time any of the provisions of this
certificate of incorporation may be amended, altered, or repealed, and other
provisions authorized by the laws of the State of Delaware at the time in force
may be added or inserted in the manner and at the time prescribed by said laws,
and all rights at any time conferred upon the stockholders of the Corporation by
this certificate of incorporation are granted subject to the provision of this
Article ELEVENTH.

            Executed on this 30th day of April 1999.

                                     /s Robin Shadduck
                                     -------------------------------------------
                                     Robin Shadduck
                                     Incorporator

                                       3


             CERTIFICATE OF CHANGE OF LOCATION OF REGISTERED OFFICE
                             AND OF REGISTERED AGENT

                COMPREHENSIVE MEDICAL IMAGING - BAKERSFIELD, INC.

It is hereby certified that:

            1. The name of the corporation (hereinafter called the
"corporation") is:

                COMPREHENSIVE MEDICAL IMAGING - BAKERSFIELD, INC.

            2. The registered office of the corporation within the State of
Delaware is hereby changed to 2711 Centerville Road, Suite 400, City of
Wilmington 19808, County of New Castle.

            3. The registered agent of the corporation within the State of
Delaware is hereby changed to Corporation Service Company, the, business office
of which is identical with the registered office of the corporation as hereby
changed.

            4. The corporation has authorized the changes hereinbefore set forth
by resolution of its Board of Directors.

Signed May 16, 2003

                                     /s/ Robin Smith Hoke
                                     -------------------------------------------
                                     Name: Robin Smith Hoke
                                     Title: President