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

------------------------------------------------------------------------------


                                 SCHEDULE 13G

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

                         BIO-IMAGING TECHNOLOGIES INC.
                         -----------------------------
                               (Name of Issuer)


                   Common Stock, par value $0.00025 per share
              ---------------------------------------------------
                        (Title of Class of Securities)


                                   09056N103
                              -------------------
                                (CUSIP Number)


                                December 31, 2007
                              --------------------
            (Date of Event which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

                             [ ]  Rule 13d-1(b)

                             [X]  Rule 13d-1(c)

                             [ ]  Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


                         Continued on following pages
                              Page 1 of 17 Pages
                            Exhibit Index: Page 15



                                 SCHEDULE 13G

CUSIP No.: 09056N103                                         Page 2 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         LANDMARK ADVISORS, LLC
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         Delaware
.................................................................................

Number of       5.     Sole Voting Power                  None
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                713,162
Person With     ................................................................

                7.     Sole Dispositive Power             None
                ................................................................

                8.     Shared Dispositive Power           713,162
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         IA




CUSIP No.: 913201109                                         Page 3 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         LANDMARK SELECT MASTER FUND LTD.
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         Cayman Islands
.................................................................................

Number of       5.     Sole Voting Power                  None
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                713,162
Person With     ................................................................

                7.     Sole Dispositive Power             None
                ................................................................

                8.     Shared Dispositive Power           713,162
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         HC



CUSIP No.: 913201109                                         Page 4 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         TILDENROW ADVISORS, LLC
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         New York
.................................................................................

Number of       5.     Sole Voting Power                  None
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                713,162
Person With     ................................................................

                7.     Sole Dispositive Power             None
                ................................................................

                8.     Shared Dispositive Power           713,162
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         IA



CUSIP No.: 913201109                                         Page 5 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         BARON ADVISORS LLC
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         New York
.................................................................................

Number of       5.     Sole Voting Power                  None
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                713,162
Person With     ................................................................

                7.     Sole Dispositive Power             None
                ................................................................

                8.     Shared Dispositive Power           713,162
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         HC



CUSIP No.: 913201109                                         Page 6 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         AHMED FATTOUH
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         United States of America
.................................................................................

Number of       5.     Sole Voting Power                  713,162
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                None
Person With     ................................................................

                7.     Sole Dispositive Power             713,162
                ................................................................

                8.     Shared Dispositive Power           None
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         HC



CUSIP No.: 913201109                                         Page 7 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         JOHN SALIB
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         United States of America
.................................................................................

Number of       5.     Sole Voting Power                  713,162
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                None
Person With     ................................................................

                7.     Sole Dispositive Power             713,162
                ................................................................

                8.     Shared Dispositive Power           None
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         HC



CUSIP No.: 913201109                                         Page 8 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         SEBASTIAN STUBBE
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         United States of America
.................................................................................

Number of       5.     Sole Voting Power                  713,162
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                None
Person With     ................................................................

                7.     Sole Dispositive Power             713,162
                ................................................................

                8.     Shared Dispositive Power           None
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         HC



CUSIP No.: 913201109                                         Page 9 of 17 Pages
.................................................................................

1.       Names of Reporting Persons.

         I.R.S. Identification Nos. of above persons (entities only).


         EILEEN SEGALL
.................................................................................
2.       Check the Appropriate Box if a Member of a Group

         (a) [ ]

         (b) [ ]
.................................................................................

3.       SEC Use Only
.................................................................................

4.       Citizenship or Place of Organization

         United States of America
.................................................................................

Number of       5.     Sole Voting Power                  713,162
Shares
Beneficially    ................................................................
Owned by Each
Reporting       6.     Shared Voting Power                None
Person With     ................................................................

                7.     Sole Dispositive Power             713,162
                ................................................................

                8.     Shared Dispositive Power           None
.................................................................................

9.       Aggregate Amount Beneficially Owned by Each Reporting Person

         713,162
.................................................................................

10.      Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
         Instructions)

         |_|
.................................................................................

11.      Percent of Class Represented by Amount in Row (9)

         6.10% based on 11,696,108 shares outstanding as of September 30, 2007.
.................................................................................

12.      Type of Reporting Person:

         HC



                                                             Page 10 of 17 Pages

Item 1(a). Name of Issuer:

Bio-Imaging Technologies Inc. (the "Issuer")

Item 1(b). Address of Issuer's Principal Executive Offices:

826 Newton-Yardley Road
Newton, PA 18940-1721


Item 2(a). Name of Person Filing

This   Statement  is  filed  on  behalf  of  each  of  the   following   persons
(collectively, the "Reporting Persons"):

i)    Tildenrow Advisors, LLC ("Tildenrow Advisors")

ii)   Landmark Select Master Fund Ltd. ("Landmark Select")

iii)  Landmark Advisors, LLC ("Landmark Advisors")

iv)   Baron Advisors, LLC ("Baron Advisors")

v)    Ahmed Fattouh ("Mr. Fattouh")

vi)   John Salib ("Mr. Salib")

vii)  Sebastian Stubbe ("Mr. Stubbe")

viii) Eileen Segall ("Ms. Segall")

                  This Statement  relates to Shares (as defined herein) held for
the accounts of Landmark  Select, a Cayman Islands  exempted  company.  Landmark
Advisors serves as investment  adviser to Landmark Select and Tildenrow Advisors
serves as  sub-adviser  to Landmark  Select  under  Landmark  Advisors.  In such
capacity,  both Landmark  Advisors and Tildenrow  Advisors may be deemed to have
voting and  dispositive  power over the Shares  held for the account of Landmark
Select.  Landmark Advisors is a registered  investment adviser under Section 203
of the Investment  Advisers Act of 1940, as amended.  Baron  Advisors,  LLC, Mr.
Salib and Mr.  Stubbe  are  members  of  Landmark  Advisors  with  discretionary
authority   in  relation  to  trades   advised  by  Landmark   Advisors  or  its
sub-advisers.  Mr. Fattouh is the managing member of Baron Advisors.  Ms. Segall
is the managing member of Tildenrow Advisors.

Item 2(b). Address of Principal Business Office or, if None, Residence:

                  The  address  of the  principal  business  office  of  each of
Landmark Advisors,  Landmark Select, Baron Advisors,  Mr. Fattouh, Mr. Salib and
Mr.  Stubbe is 408 West 14th  Street,  New York,  NY 10014.  The  address of the
principal place of business of Tildenrow  Advisors and Ms. Segall is 120 E. 34th
Street Suite 6H, New York, NY 10016.

Item 2(c). Citizenship:




                                                             Page 11 of 17 Pages

i)    Tildenrow Advisors is a New York limited liability company;

ii)   Landmark Select is a Cayman Islands exempted company;

iii)  Landmark Advisors is a Delaware limited liability company;

iv)   Baron Advisors is a New York limited liability company;

v)    Mr. Fattouh is a citizen of the United States of America;

vi)   Mr. Salib is a citizen of the United States of America;

vii)  Mr. Stubbe is a citizen of the United States of America; and

viii) Ms. Segall is a citizen of the United States of America.

Item 2(d). Title of Class of Securities:

Common Stock, par value $.00025 per share (the "Shares")

Item 2(e).CUSIP Number:

09056N103

Item 3. If This Statement is Filed Pursuant to ss.ss.240.13d-1(b) or
240.13d-2(b) or (c), Check Whether the Person Filing is a:

                  This Item 3 is not applicable.

Item 4. Ownership:

Item 4(a) Amount Beneficially Owned:

                   As  of  December  31,  2007,  Tildenrow  Advisors,   Landmark
Advisors,  Landmark Select,  Baron Advisors,  Mr. Fattouh, Mr. Salib, Mr. Stubbe
and Ms. Segall may be deemed to be the beneficial owner of 713,162 Shares.  This
amount consists of 713,162 Shares held for the account of Landmark Select.

Item 4(b) Percent of Class:

                   The  number of Shares of which  each of  Tildenrow  Advisors,
Landmark Advisors,  Landmark Select, Baron Advisors, Mr. Fattouh, Mr. Salib, Mr.
Stubbe  and Ms.  Segall  may be deemed to be the  beneficial  owner  constitutes
approximately  6.10% of the  total  number  of Shares  outstanding  (based  upon
information  provided by the Issuer in its most recently filed quarterly  report
on Form 10-Q,  there were  approximately  11,696,108  shares  outstanding  as of
September 30, 2007).

Item 4(c) Number of Shares of which such person has:

                   Tildenrow Advisors, Landmark Advisors, Landmark Select, Baron
Advisors, Mr. Fattouh, Mr. Salib, Mr. Stubbe and Ms. Segall




                                                             Page 12 of 17 Pages

(i)  Sole power to vote or direct the vote:                                    0

(ii)  Shared power to vote or direct the vote:                           713,162

(iii) Sole power to dispose or direct the disposition of:                      0

(iv)  Shared power to dispose or direct the disposition of:              713,162


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

                  This Item 5 is not applicable.

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

                  This Item 6 is not applicable.

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

                  See disclosure in Item 2 hereof.

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

                  This Item 8 is not applicable.

Item 9. Notice of Dissolution of Group:

                  This Item 9 is not applicable.

Item 10. Certification:

                  By signing below each of the Reporting Persons certifies that,
to the best of their 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.





                                                             Page 13 of 17 Pages


                                   SIGNATURE

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


Date: February 4, 2008               LANDMARK SELECT MASTER FUND LTD.

                                     By: LANDMARK ADVISORS, LLC, its investment
                                     adviser

                                     By:    /s/ John Salib
                                         -----------------------------
                                     Name:  John Salib
                                     Title: Member


Date: February 4, 2008               TILDENROW ADVISORS, LLC


                                     By:    /s/ Eileen Segall
                                         -----------------------------
                                     Name:  Eileen Segall
                                     Title: Managing Member


Date: February 4, 2008               LANDMARK ADVISORS LLC


                                     By:    /s/ John Salib
                                         -----------------------------
                                     Name:  John Salib
                                     Title: Member


Date: February 4, 2008               BARON ADVISORS, LLC


                                     By:    /s/ Ahmed Fattouh
                                         -----------------------------
                                     Name:  Ahmed Fattouh
                                     Title: Managing Member


Date: February 4, 2008               AHMED FATTOUH


                                            /s/ Ahmed Fattouh
                                     ---------------------------------


Date: February 4, 2008               JOHN SALIB


                                            /s/ John Salib
                                     ---------------------------------


Date: February 4, 2008               SEBASTIAN STUBBE


                                            /s/ Sebastian Stubbe
                                     ---------------------------------



                                                             Page 14 of 17 Pages



                                     EILEEN SEGALL


Date: February 4, 2008                      /s/ Eileen Segall
                                     ---------------------------------





                                                             Page 15 of 17 Pages


                                 EXHIBIT INDEX

Exhibit                                                                Page No.
-------                                                                --------

   A          Joint Filing Agreement, dated February 4, 2007 by and among
              Tildenrow Advisors, Landmark Advisors, Landmark Select,
              Baron Advisors, Mr. Fattouh, Mr. Salib, Mr. Stubbe and
              Ms. Segall...............................................   16




                                                             Page 16 of 17 Pages



                                   EXHIBIT A

                            JOINT FILING AGREEMENT

                   The  undersigned  hereby agree that the statement on Schedule
13G with respect to the Common Stock of  Bio-Imaging,  Inc. dated as of February
4, 2008 is, and any amendments  thereto  (including  amendments on Schedule 13D)
signed  by each of the  undersigned  shall  be,  filed on  behalf  of each of us
pursuant to and in accordance  with the  provisions  of Rule 13d-1(k)  under the
Securities Exchange Act of 1934, as amended.



Date: February 4, 2008               LANDMARK SELECT MASTER FUND LTD.

                                     By: LANDMARK ADVISORS, LLC, its investment
                                     adviser

                                     By:    /s/ John Salib
                                     ------------------------------
                                     Name:  John Salib
                                     Title: Member


Date: February 4, 2008               TILDENROW ADVISORS, LLC


                                     By:    /s/ Eileen Segall
                                     ------------------------------
                                     Name:  Eileen Segall
                                     Title: Managing Member


Date: February 4, 2008               LANDMARK ADVISORS LLC


                                     By:    /s/ John Salib
                                     ------------------------------
                                     Name:  John Salib
                                     Title: Member


Date: February 4, 2008               BARON ADVISORS, LLC


                                     By:    /s/ Ahmed Fattouh
                                     ------------------------------
                                     Name:  Ahmed Fattouh
                                     Title: Managing Member


Date: February 4, 2008               AHMED FATTOUH


                                     By:    /s/ Ahmed Fattouh
                                     ------------------------------




                                                             Page 17 of 17 Pages


Date: February 4, 2008               JOHN SALIB


                                     By:    /s/ John Salib
                                     ------------------------------


Date: February 4, 2008               SEBASTIAN STUBBE


                                     By:    /s/ Sebastian Stubbe
                                     ------------------------------


                                     EILEEN SEGALL


Date: February 4, 2008               By:    /s/ Eileen Segall
                                     ------------------------------