Exhibit 99.1

                                  Certification
            Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
    (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United
                                  States Code)

     I, John W. Cumming, President and Chief Executive Officer of Hologic, Inc.,
a Delaware corporation (the "Company"), do hereby certify, pursuant to Section
906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350,
Chapter 63 of Title 18, United States Code) that, to the best of my knowledge
and belief:

     (1) The Quarterly Report on Form 10-Q for the quarter ended December 28,
2002 (the "Form 10-Q") of the Company fully complies with the requirements of
Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

     (2) The information contained in the Form 10-Q fairly presents, in all
material respects, the financial condition and results of operations of the
Company.


Dated: February 11, 2003         /s/ John W. Cumming
                                 -----------------------------------------------
                                 John W. Cumming
                                 Chairman, President and Chief Executive Officer

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