UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                                (Amendment No. 1)

                                VASOMEDICAL, INC.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                    922321104
                                 (CUSIP Number)

                                December 31, 2005
             (Date of Event Which Requires Filing of this Statement)

      |_|   Rule 13d-1(b)
      |X|   Rule 13d-1(c)
      |_|   Rule 13d-1(d)



                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 2 of 13 Pages

--------------------------------------------------------------------------------
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Mercator Momentum Fund, L.P.
     EIN:03-0021366
--------------------------------------------------------------------------------
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                                 (a)  |_|
                                                                 (b)  |X|
--------------------------------------------------------------------------------
3.   SEC USE ONLY


--------------------------------------------------------------------------------
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     California
--------------------------------------------------------------------------------
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               -----------------------------------------------------------------
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          1,589,816
               -----------------------------------------------------------------
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         0
               -----------------------------------------------------------------
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            1,589,816
--------------------------------------------------------------------------------
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     1,589,816
--------------------------------------------------------------------------------
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          |_|
--------------------------------------------------------------------------------
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     2.61%
--------------------------------------------------------------------------------
12.  TYPE OF REPORTING PERSON*

     PN
--------------------------------------------------------------------------------


                                      -2-


                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 3 of 13 Pages

--------------------------------------------------------------------------------
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Mercator Momentum Fund III, L.P.
     EIN:32-0056070
--------------------------------------------------------------------------------
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                                 (a)  |_|
                                                                 (b)  |X|
--------------------------------------------------------------------------------
3.   SEC USE ONLY


--------------------------------------------------------------------------------
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     California
--------------------------------------------------------------------------------
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               -----------------------------------------------------------------
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          1,011,754
               -----------------------------------------------------------------
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         0
               -----------------------------------------------------------------
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            1,011,754
--------------------------------------------------------------------------------
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     1,011,754
--------------------------------------------------------------------------------
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          |_|
--------------------------------------------------------------------------------
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     1.68%
--------------------------------------------------------------------------------
12.  TYPE OF REPORTING PERSON*

     PN
--------------------------------------------------------------------------------


                                      -3-


                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 4 of 13 Pages

--------------------------------------------------------------------------------
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     Monarch Pointe Fund, Ltd.
--------------------------------------------------------------------------------
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                                 (a)  |_|
                                                                 (b)  |X|
--------------------------------------------------------------------------------
3.   SEC USE ONLY


--------------------------------------------------------------------------------
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     British Virgin Islands
--------------------------------------------------------------------------------
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               -----------------------------------------------------------------
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          3,790,341
               -----------------------------------------------------------------
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         0
               -----------------------------------------------------------------
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            3,790,341
--------------------------------------------------------------------------------
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     3,790,341
--------------------------------------------------------------------------------
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          |_|
--------------------------------------------------------------------------------
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     6.01%
--------------------------------------------------------------------------------
12.  TYPE OF REPORTING PERSON*

     PN
--------------------------------------------------------------------------------


                                      -4-


                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 5 of 13 Pages

--------------------------------------------------------------------------------
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     M.A.G. Capital, LLC
     EIN: 300021359
--------------------------------------------------------------------------------
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                                 (a)  |_|
                                                                 (b)  |X|
--------------------------------------------------------------------------------
3.   SEC USE ONLY


--------------------------------------------------------------------------------
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     California
--------------------------------------------------------------------------------
               5.   SOLE VOTING POWER

                    0
               -----------------------------------------------------------------
  NUMBER OF    6.   SHARED VOTING POWER

   SHARES           6,574,550, some of which are held by Mercator Momentum Fund
                    and Mercator Momentum Fund III (together, the "Funds"),
BENEFICIALLY        some of which are owned by Monarch Pointe Fund, Ltd.
                    ("MPF") and some of which are owned by M.A.G. Capital, LLC
  OWNED BY          ("MAG"). MAG is the general partner of the Funds and
                    controls the investments of MPF.
    EACH       -----------------------------------------------------------------
               7.   SOLE DISPOSITIVE POWER
  REPORTING
                    0
   PERSON      -----------------------------------------------------------------
               8.   SHARED DISPOSITIVE POWER
    WITH
                    6,574,550, some of which are held by the Funds, some by MPF
                    and some by MAG.
--------------------------------------------------------------------------------
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     6,574,550
--------------------------------------------------------------------------------
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          |_|
--------------------------------------------------------------------------------
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     9.99%
--------------------------------------------------------------------------------
12.  TYPE OF REPORTING PERSON*

     IA
--------------------------------------------------------------------------------


                                      -5-


                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 6 of 13 Pages

--------------------------------------------------------------------------------
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

     David F. Firestone
--------------------------------------------------------------------------------
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                                                                 (a)  |_|
                                                                 (b)  |X|
--------------------------------------------------------------------------------
3.   SEC USE ONLY


--------------------------------------------------------------------------------
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

     USA
--------------------------------------------------------------------------------
               5.   SOLE VOTING POWER
  NUMBER OF
                    0
   SHARES      -----------------------------------------------------------------
               6.   SHARED VOTING POWER
BENEFICIALLY

  OWNED BY          6,574,550, all of which are held by the Funds, MPF and MAG.
                    David F. Firestone is Managing Member of MAG.
    EACH       -----------------------------------------------------------------
               7.   SOLE DISPOSITIVE POWER
  REPORTING
                    0
   PERSON      -----------------------------------------------------------------
               8.   SHARED DISPOSITIVE POWER
    WITH
                    6,574,550, all of which are held by the Funds, MPF and MAG.
                    David F. Firestone is Managing Member of MAG.
--------------------------------------------------------------------------------
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     6,574,550
--------------------------------------------------------------------------------
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          |_|
--------------------------------------------------------------------------------
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

     9.99%
--------------------------------------------------------------------------------
12.  TYPE OF REPORTING PERSON*

     IN
--------------------------------------------------------------------------------


                                      -6-


                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 7 of 13 Pages

      This statement is hereby amended and restated in its entirety as follows:

Item 1. Issuer.

      (a) The name of the issuer is Vasomedical, Inc. (the "Issuer").

      (b) The address of the Issuer's principal executive office is 180 Linden
Avenue, Westbury, New York 11590.

Item 2. Reporting Person and Security.

      (a) Mercator Momentum Fund, L.P. ("Momentum Fund") and Mercator Momentum
Fund III, L.P. ("Momentum Fund III" and, with Momentum Fund, the "Funds") are
private investment limited partnerships organized under California law. The
general partner of each of the Funds is M.A.G. Capital, LLC ("MAG"), a
California limited liability company. David F. Firestone is the Managing Member
of MAG. Monarch Pointe Fund, Ltd. ("MPF") is a corporation organized under the
laws of the British Virgin Islands. MAG controls the investments of MPF. The
Funds, MPF, MAG and David F. Firestone are referred to herein as the "Reporting
Persons."

      (b) The business address of each of the Funds, MAG and David F. Firestone
is 555 S. Flower Street, Suite 4200, Los Angeles, CA 90071. The business address
of MPF is c/o Bank of Ireland Securities Services, Ltd., New Century House,
International Financial Services Center, Mayor Street Lower, Dublin 1, Republic
of Ireland.

      (c) Each of the Funds is a California limited partnership. MAG, their
general partner, is a California limited liability company. MPF is a corporation
organized under the laws of the British Virgin Islands.

      (d) The title of the class of securities to which this statement relates
is the common stock of the Issuer, par value $0.001 per share (the "Common
Stock").

      (e) The CUSIP number is 922321104.

Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b) or 13d-2(b) or (c),
        Check Whether the Person Filing is a:

      (a) |_| Broker or dealer registered under Section 15 of the Act (15 U.S.C.
78o).

      (b) |_| Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).

      (c) |_| Insurance company as defined in Section 3(a)(19) of the Act (15
U.S.C. 78c).

      (d) |_| Investment company registered under Section 8 of the Investment
Company Act of 1940 (15 U.S.C. 80a-8).


                                      -7-


                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 8 of 13 Pages

      (e) |_| An investment adviser in accordance with ss. 240.13d-1(b)(1)(ii)
(E).

      (f) |_| An employee benefit plan or endowment fund in accordance with ss.
240.13d-1(b)(1)(ii)(F).

      (g) |_| A parent holding company or control person in accordance with ss.
240.13d-1(b)(1)(ii)(G).

      (h) |_| A savings association as defined in Section 3(b) of the Federal
Deposit Insurance Act (12 U.S.C. 1813).

      (i) |_| A church plan that is excluded from the definition of an
investment company under Section 3(c)(14) of the Investment Company Act of 1940
(15 U.S.C. 80a-3).

      (j) |_| Group, in accordance with ss. 240.13d-1(b)(1)(ii)(J).

      Not Applicable.

Item 4. Ownership.

      The Funds, MPF and MAG each own warrants to purchase shares of Common
Stock. The Funds and MPF each own shares of the Issuer's Series D Preferred
Stock (the "Series D Stock") which is convertible into Common Stock. Each share
of Series D Stock is convertible into the number of shares of Common Stock
determined by dividing $100 by the Conversion Price at the time of conversion.
The Conversion Price is defined as 85% of the volume weighted average trading
price of the Common Stock during the five trading days immediately preceding the
conversion, rounded to the nearest ten thousandth; providing, however, that the
Conversion Price may not be less than $0.40 or more than $0.6606, adjusted for
stock splits and similar events. The documentation governing the terms of the
warrants and the Series D Stock contains provisions prohibiting any exercise of
the warrants or conversion of Series D Stock that would result in the Reporting
Persons owning beneficially more than 9.99% of the outstanding shares of Common
Stock as determined under Section 13(d) of the Securities Exchange Act of 1934.
As a result of these provisions, the Reporting Persons have never had beneficial
ownership of more than 9.99% of the outstanding shares of Common Stock.

      As of December 31, 2005, the Funds, MPF and MAG owned the following
securities of the Issuer:

      Momentum Fund owned 23,872 shares of Common Stock and 4,750 shares of
Series D Stock and warrants to purchase up to 378,444 shares of Common Stock.

      Momentum Fund III owned 47,133 shares of Common Stock and 2,926 shares of
Series D Stock and warrants to purchase up to 233,121 shares of Common Stock.

      MPF owned 57,131 shares of Common Stock and 11,324 shares of Series D
Stock and warrants to purchase up to 902,210 shares of Common Stock.


                                      -8-


                                  SCHEDULE 13G

CUSIP No. 922321104                                           Page 9 of 13 Pages

      MAG owned warrants to purchase up to 378,444 shares of Common Stock.

      David F. Firestone owned no securities of the Issuer directly.

      The right to vote and the right to dispose of the shares beneficially
owned by Momentum Fund, Momentum Fund III and MPF are, in each case, shared
among either Momentum Fund, Momentum Fund III or MPF, as applicable, and both
MAG and David F. Firestone. The right to vote and the right to dispose of the
shares beneficially owned by MAG are shared by MAG and David F. Firestone.

      Assuming that the Issuer had 59,364,897 shares of Common Stock outstanding
as of December 31, 2005, which is the number reported by the Issuer as
outstanding as of October 10, 2005, according to its Quarterly Report on Form
10-Q for the quarter ended August 31, 2005, the individual Reporting Persons
had, on December 31, 2005, beneficial ownership of the following numbers of
shares of Common Stock which represented the following percentages of the Common
Stock outstanding:

                                          Shares Owned          Percentage
                                          ------------          ----------

           Momentum Fund                   1,589,816               2.61%

           Momentum Fund III               1,011,754               1.68%

           MPF                             3,790,341               6.01%

           MAG                             6,574,550               9.99%

           David F. Firestone              6,574,550               9.99%

      The percentages of the outstanding Common Stock held by the Reporting
Persons set forth above and on the cover pages to this report were determined,
using a Conversion Price of $0.40 with respect to the Series D Stock.

Item 5. Ownership of Five Percent or Less of a Class.

      If this Schedule is being filed to report the fact that as of the date
hereof the Reporting Person has ceased to be the beneficial owner of more than
five percent of the class of securities, check the following [__]

      Not Applicable.

Item 6. Ownership of More than Five Percent on Behalf of Another Person.

      Not Applicable.


                                      -9-


                                  SCHEDULE 13G

CUSIP No. 922321104                                          Page 10 of 13 Pages

Item 7. Identification and Classification of the Subsidiary Which Acquired the
        Security Being Reported on By the Parent Holding Company or Control
        Person.

      Not Applicable.

Item 8. Identification and Classification of Members of the Group.

      Not Applicable.

Item 9. Notice of Dissolution of Group.

      Not Applicable.

Item 10. Certifications.

      By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.


                                      -10-


                                  SCHEDULE 13G

CUSIP No. 922321104                                          Page 11 of 13 Pages

                                    SIGNATURE

      After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated: May 2, 2006                        MERCATOR MOMENTUM FUND, L.P.

                                          By: M.A.G. CAPITAL, LLC,
                                          its general partner

                                          By: /s/ Harry Aharonian
                                              ----------------------------------
                                              Harry Aharonian, Portfolio Manager


Dated: May 2, 2005                        MERCATOR MOMENTUM FUND III, L.P.

                                          By: M.A.G. CAPITAL, LLC,
                                          its general partner

                                          By: /s/ Harry Aharonian
                                              ----------------------------------
                                              Harry Aharonian, Portfolio Manager


Dated: May 2, 2006                        MONARCH POINTE FUND, LTD.

                                          By: /s/ Harry Aharonian
                                              ----------------------------------
                                              Harry Aharonian, Portfolio Manager


Dated: May 2, 2006                        M.A.G. CAPITAL, LLC

                                          By: /s/ Harry Aharonian
                                              ----------------------------------
                                              Harry Aharonian, Portfolio Manager
Dated: May 2, 2006
                                          /s/ David F. Firestone
                                          --------------------------------------
                                                 David F. Firestone


                                      -11-


                                  SCHEDULE 13G

CUSIP No. 922321104                                          Page 12 of 13 Pages

                                  EXHIBIT INDEX

Exhibit A            Agreement of Joint Filing


                                      -12-


                                  SCHEDULE 13G

CUSIP No. 922321104                                          Page 11 of 13 Pages

                                    EXHIBIT A

                            AGREEMENT OF JOINT FILING

      The undersigned hereby agree that they are filing jointly pursuant to Rule
13d-1 of the Securities Exchange Act of 1934 a report on Schedule 13G,
containing the information required by Schedule 13G, for shares of the common
stock of Vasomedical, Inc. beneficially owned by Mercator Momentum Fund, L.P.,
Mercator Momentum Fund III, L.P., Monarch Pointe Fund, Ltd., M.A.G. Capital, LLC
and David F. Firestone and such other holdings as may be reported therein.

Dated: May 2, 2006

MERCATOR MOMENTUM FUND, L.P.

By: M.A.G. CAPITAL, LLC,
its general partner

By: /s/ Harry Aharonian
    ----------------------------------
    Harry Aharonian, Portfolio Manager


MERCATOR MOMENTUM FUND III, L.P.

By: M.A.G. CAPITAL, LLC,
its general partner

By: /s/ Harry Aharonian
    ----------------------------------
    Harry Aharonian, Portfolio Manager


MONARCH POINTE FUND, LTD.

By: /s/ Harry Aharonian
    ----------------------------------
    Harry Aharonian, Portfolio Manager


M.A.G. CAPITAL, LLC

By: /s/ Harry Aharonian
    ----------------------------------
    Harry Aharonian, Portfolio Manager

/s/ David F. Firestone
--------------------------------------
David F. Firestone


                                      -13-