
<PAGE>
 
                            [KATTEN MUCHIN & ZAVIS]
 
                                          September 6, 1996
 
Hologic, Inc.
590 Lincoln Street
Waltham, Massachusetts 02154
 
Ladies and Gentlemen:
 
  We hereby consent to the reference to our name in the Registration Statement
under the caption "Legal Matters".
 
                                          Very truly yours,
 
                                          /s/ Katten Muchin & Zavis
                                          ---------------------------------
                                          Katten Muchin & Zavis
