Document:

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                                                                   EXHIBIT 10.32

$221,196.02                                                  Fort Myers, Florida
                                                             September 1, 1997

                                 PROMISSORY NOTE

         For value received, RADIATION THERAPY SERVICES, INC., a Florida
corporation ("Debtor"), promises to pay to the order of Daniel E. Dosoretz, M.D
("Payee"), an individual resident of the state of Florida, at 1850 Boyscout
Drive, Suite A 101 or such address as may be specified from time to time by the
holder hereof, the principal sum of Two Hundred Twenty One Thousand One Hundred
Ninety Six Dollars and Two Cents ($221,196.02). Interest shall accrue at the
rate of eight percent (8%) per annum, compounded monthly.

         Debtor may make prepayments or principal on this Note without penalty.

         Failure of Debtor to make any payment of interest or principal when due
shall be deemed to be an event of default. It shall also be an event of default
if Debtor files a petition seeking relief, or consents to the filing or
instituting of proceedings against him, under any federal or state bankruptcy
law or other similar law, or causes, permits or consents to the appointment of,
or taking possession by, a receiver or similar official of all or substantially
all of Debtor's property. On the occurrence of an event of default, Payee may
declare the entire amount due hereunder immediately due and payable (except that
in the case of an event of default described in the immediately preceding
sentence, the entire amount due hereunder automatically shall become due and
payable), and the interest rate hereunder shall be increased from and after such
default to twelve percent (12%) per annum (but in no event in excess of the
maximum rate permitted by Florida law).

         This Note shall be binding upon Debtor and Debtor's legal
representatives, heirs and assigns. Presentation for payment, notice of
dishonor, protest and notice of protest are hereby waived.

         Debtor agrees to pay and shall pay all documentary stamp tax due on
this Note.

         In the event of any litigation arising under this Note, the
non-prevailing party shall pay the prevailing party's attorneys' fees and costs
incurred in litigation.

         This Note shall be governed by the laws of the State of Florida and
may not be changed or terminated orally.

Dated this 1st day of September, 1997.

                                            DEBTOR:
                                            RADIATION THERAPY SERVICES, INC.

                                            By: /s/ Daniel E. Dosoretz
                                                --------------------------------
                                            Daniel E. Dosoretz, M.D.
                                            President and CEO<PAGE>

                                                                   EXHIBIT 10.33

$235,995.69                                                  Fort Myers, Florida
                                                             September 1, 1997

                                 PROMISSORY NOTE

         For value received, RADIATION THERAPY SERVICES, INC., a Florida
corporation ("Debtor"), promises to pay to the order of Michael J. Katin, M.D
("Payee"), an individual resident of the state of Florida, at 1850 Boyscout
Drive, Suite A 101 or such address as may be specified from time to time by the
holder hereof, the principal sum of Two Hundred Thirty Five Thousand Nine
Hundred Ninety Five Dollars and Sixty Nine Cents ($235,995.69). Interest shall
accrue at the rate of eight percent (8%) per annum, compounded monthly.

         Debtor may make prepayments of principal on this Note without penalty.

         Failure of Debtor to make any payment of interest or principal when due
shall be deemed to be an event of default. It shall also be an event of default
if Debtor files a petition seeking relief, or consents to the filing or
instituting of proceedings against him, under any federal or state bankruptcy
law or other similar law, or causes, permits or consents to the appointment of,
or taking possession by, a receiver or similar official of all or substantially
all of Debtor's property. On the occurrence of an event of default. Payee may
declare the entire amount due hereunder immediately due and payable (except that
in the case of an event of default described in the immediately preceding
sentence, the entire amount due hereunder automatically shall become due and
payable), and the interest rate hereunder shall be increased from and after such
default to twelve percent (12%) per annum (but in no event in excess of the
maximum rate permitted by Florida law).

         This Note shall be binding upon Debtor and Debtor's legal
representatives, heirs and assigns. Presentation for payment, notice of
dishonor, protest and notice of protest are hereby waived.

         Debtor agrees to pay and shall pay all documentary stamp tax clue on
this Note.

         In the event of any litigation arising under this Note, the
non-prevailing party shall pay the prevailing party's attorneys' fees and costs
incurred in litigation.

         This Note shall be governed by the laws of the State of Florida and may
not be changed or terminated orally.

Dated this 1st day of September, 1997.

                                           DEBTOR:
                                           RADIATION THERAPY SERVICES, INC.

                                           By: /s/ Daniel E. Dosoretz
                                               -------------------------------
                                           Daniel E. Dosoretz, M.D.
                                           President and CEO<PAGE>

                                                                   EXHIBIT 10.34

$293,631.35                                                  Fort Myers, Florida
                                                             September 1, 1997

                                 PROMISSORY NOTE

         For value received, RADIATION THERAPY SERVICES, INC., a Florida
corporation ("Debtor"), promises to pay to the order of Howard M. Sheridan, M.D
("Payee"), an individual resident of the state of Florida, at 1850 Boyscout
Drive, Suite A 101 or such address as may be specified from time to time by the
holder hereof, the principal sum of Two Hundred Ninety Three Thousand Six
Hundred Thirty One Dollars and Thirty Five Cents ($293,631.35). Interest shall
accrue at the rate of eight percent (8%) per annum, compounded monthly.

         Debtor may make prepayments of principal on this Note without penalty.

         Failure of Debtor to make any payment of interest or principal when
due shall be deemed to be an event of default. It shall also be an event of
default if Debtor files a petition seeking relief, or consents to the filing or
instituting of proceedings against him, under any federal or state bankruptcy
law or other similar law, or causes, permits or consents to the appointment of,
or taking possession by, a receiver or similar official of all or substantially
all of Debtor's property. On the occurrence of an event of default, Payee may
declare the entire amount due hereunder immediately due and payable (except that
in the case of an event of default described in the immediately preceding
sentence, the entire amount due hereunder automatically shall become due and
payable), and the interest rate hereunder shall be increased from and after such
default to twelve percent (12%) per annum (but in no event in excess of the
maximum rate permitted by Florida law).

         This Note shall be binding upon Debtor and Debtor's legal
representatives, heirs and assigns. Presentation for payment, notice of
dishonor, protest and notice of protest are hereby waived.

         Debtor agrees to pay and shall pay all documentary stamp tax due on
this Note.

         In the event of any litigation arising under this Note, the
non-prevailing party shall pay the prevailing party's attorneys' fees and costs
incurred in litigation.

         This Note shall be governed by the laws of the State of Florida and may
not be changed or terminated orally.

Dated this 1st day of September, 1997.

                                            DEBTOR:
                                            RADIATION THERAPY SERVICES, INC.

                                            By: /s/ Daniel E. Dosoretz
                                                -------------------------------
                                            Daniel E. Dosoretz, M.D.
                                            President and CEO<PAGE>

                                                                   EXHIBIT 10.35

$270,354.36                                                  Fort Myers, Florida
                                                             September 1, 1997

                                 PROMISSORY NOTE

         For value received, RADIATION THERAPY SERVICES, INC., a Florida
corporation ("Debtor"), promises to pay to the order of James R. Rubenstein, M.D
("Payee"), an individual resident of the state of Florida, at 1850 Boyscout
Drive, Suite A 101 or such address as may be specified from time to time by the
holder hereof, the principal sum of Two Hundred Seventy Thousand Three Hundred
Fifty Four Dollars and Thirty Six Cents ($270,354.36). Interest shall accrue at
the rate of eight percent (8%) per annum, compounded monthly.

         Debtor may make prepayments of principal on this Note without penalty.

         Failure of Debtor to make any payment of interest or principal when due
shall be deemed to be an event of default. It shall also be an event of default
if Debtor files a petition seeking relief, or consents to the filing or
instituting of proceedings against him, under any federal or state-bankruptcy
law or other similar law, or causes, permits or consents to the appointment of,
or taking possession by, a receiver or similar official of all or substantially
all of Debtor's property. On the occurrence of an event of default, Payee may
declare the entire amount due hereunder immediately due and payable (except that
in the case of an event of default described in the immediately preceding
sentence, the entire amount due hereunder automatically shall become due and
payable), and the interest rate hereunder shall be increased from and after such
default to twelve percent (12%) per annum (but in no event in excess of the
maximum rate permitted by Florida law).

         This Note shall be binding upon Debtor and Debtor's legal
representatives, heirs and assigns. Presentation for payment, notice of
dishonor, protest and notice of protest are hereby waived.

         Debtor agrees to pay and shall pay all documentary stamp tax due on
this Note.

         In the event of any litigation arising under this Note, the
non-prevailing party shall pay the prevailing party's attorneys' fees and costs
incurred in litigation.

         This Note shall be governed by the laws of the State of Florida and may
not be changed or terminated orally.

Dated this 1st day of September, 1997.

                                            DEBTOR:
                                            RADIATION THERAPY SERVICES, INC.

                                            By: /s/ Daniel E. Dosoretz
                                                -------------------------------
                                            Daniel E. Dosoretz, M.D.
                                            President and CEO

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