SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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


                                    FORM 8-K


                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934



                                 Date of Report
                       (Date of earliest event reported):

                                January 31, 2000

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


                            TREX MEDICAL CORPORATION
                      ------------------------------------
             (Exact name of Registrant as specified in its charter)


Delaware                              1-11827                        06-1439626
--------------------------------------------------------------------------------
(State or other                     (Commission                (I.R.S. Employer
jurisdiction of                      File Number)         Identification Number)
incorporation or
organization)


37 Apple Ridge Road
Danbury, Connecticut                                                       06810
-------------------------------------------------------------------------------
(Address of principal executive offices)                              (Zip Code)


                                 (781) 622-1000
                         (Registrant's telephone number
                              including area code)



<PAGE>








         This Form 8-K contains forward-looking statements that involve a number
of risks and uncertainties. Important factors that could cause actual results to
differ materially from those indicated by such forward-looking statements are
set forth under the heading "Forward-looking Statements" in Exhibit 13 to Trex
Medical Corporation's Annual Report on Form 10-K for the fiscal year ended
October 2, 1999. These include risks and uncertainties relating to: These
include risks and uncertainties relating to: dependency on capital spending
policies, technological change, product development and commercialization, the
Registrant's acquisition strategy, competition, dependency on patents and
property rights, intellectual property litigation, government regulation and
approvals, healthcare reform, patient reimbursement, potential product
liability, international operations, the cash management arrangement with Thermo
Electron Corporation, and the potential impact of the year 2000 on processing
date-sensitive information.


Item 5.  Other Events
         ------------

         On January 31, 2000, the Registrant issued a press release, attached
hereto as Exhibit 99, regarding certain corporate transactions affecting the
Registrant.


Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits
         ------------------------------------------------------------------

         (a)      Financial Statements of Business Acquired: not applicable.

         (b)      Pro Forma Financial Information: not applicable.

         (c)      Exhibits

                  99       Press Release dated January 31, 2000.


<PAGE>



                                    SIGNATURE



         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized, on this 31st day of January, 2000.



                                                 TREX MEDICAL CORPORATION




                                                 By:/s/ Theo Melas-Kyriazi
                                                    ----------------------------
                                                    Theo Melas-Kyriazi
                                                    Chief Financial Officer



<PAGE>


                                                                      Exhibit 99



Investor Contact: 781-622-1111
Media Contact: 781-622-1252


                   TREX MEDICAL ANNOUNCES THAT THERMO ELECTRON
                      PLANS TO SEEK A BUYER FOR THE COMPANY

DANBURY, Conn., January 31, 2000 - Trex Medical Corporation (ASE-TXM) announced
today that its ultimate parent company, Thermo Electron Corporation (NYSE-TMO),
plans to seek a buyer for the company. This action is part of a major
reorganization plan under which Thermo Electron will spin in, spin off, and sell
various businesses to focus solely on its core measurement and detection
instruments business.

         William J. Webb, president and chief executive officer of Trex Medical,
said, "Our leading market positions in X-ray mammography and digital dental
imaging, coupled with our recently completed restructuring activities, should
position Trex Medical well as we move forward. Since Thermo Electron has made a
decision to exit the medical imaging business, we hope to align ourselves with a
premier player in our industry that offers strategic focus, targeted marketing
strength, and a greater opportunity for growth."

         Trex Medical Corporation is the world's leading manufacturer of
mammography equipment and a leading manufacturer of digital dental X-ray
equipment. In addition, the company manufactures general-purpose and specialized
medical imaging systems, including those used during diagnostic and
interventional vascular and cardiac procedures, such as balloon angioplasty.
More information is available on the Internet at
http://www.thermo.com/subsid/txm1.html.

The following constitutes a "Safe Harbor" statement under the Private Securities
Litigation Reform Act of 1995: This press release contains forward-looking
statements that involve a number of risks and uncertainties. Important factors
that could cause actual results to differ materially from those indicated by
such forward-looking statements are set forth under the heading "Forward-looking
Statements" in Exhibit 13 to the company's annual report on form 10-K for the
fiscal year ended October 2, 1999. These include risks and uncertainties
relating to: dependency on capital spending policies, technological change,
product development and commercialization, the company's acquisition strategy,
competition, dependency on patents and property rights, intellectual property
litigation, government regulation and approvals, healthcare reform, patient
reimbursement, potential product liability, international operations, the cash
management arrangement with Thermo Electron Corporation, and the potential
impact of the year 2000 on processing date-sensitive information.
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SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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

                                    FORM 8-K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934

                                 Date of Report
                       (Date of earliest event reported):

                                January 31, 2000

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

                            TREX MEDICAL CORPORATION
                      ------------------------------------
             (Exact name of Registrant as specified in its charter)

Delaware                              1-11827                        06-1439626
--------------------------------------------------------------------------------
(State or other                     (Commission                (I.R.S. Employer
jurisdiction of                      File Number)         Identification Number)
incorporation or
organization)

37 Apple Ridge Road
Danbury, Connecticut                                                       06810
-------------------------------------------------------------------------------
(Address of principal executive offices)                              (Zip Code)

                                 (781) 622-1000
                         (Registrant's telephone number
                              including area code)
This Form 8-K contains forward-looking statements that involve a number
of risks and uncertainties. Important factors that could cause actual results to
differ materially from those indicated by such forward-looking statements are
set forth under the heading "Forward-looking Statements" in Exhibit 13 to Trex
Medical Corporation's Annual Report on Form 10-K for the fiscal year ended
October 2, 1999. These include risks and uncertainties relating to: These
include risks and uncertainties relating to: dependency on capital spending
policies, technological change, product development and commercialization, the
Registrant's acquisition strategy, competition, dependency on patents and
property rights, intellectual property litigation, government regulation and
approvals, healthcare reform, patient reimbursement, potential product
liability, international operations, the cash management arrangement with Thermo
Electron Corporation, and the potential impact of the year 2000 on processing
date-sensitive information.

Item 5.  Other Events
         ------------

         On January 31, 2000, the Registrant issued a press release, attached
hereto as Exhibit 99, regarding certain corporate transactions affecting the
Registrant.

Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits
         ------------------------------------------------------------------

         (a)      Financial Statements of Business Acquired: not applicable.

         (b)      Pro Forma Financial Information: not applicable.

         (c)      Exhibits

                  99       Press Release dated January 31, 2000.
SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized, on this 31st day of January, 2000.

                                                 TREX MEDICAL CORPORATION

                                                 By:/s/ Theo Melas-Kyriazi
                                                    ----------------------------
                                                    Theo Melas-Kyriazi
                                                    Chief Financial Officer
Exhibit 99

Investor Contact: 781-622-1111
Media Contact: 781-622-1252

                   TREX MEDICAL ANNOUNCES THAT THERMO ELECTRON
                      PLANS TO SEEK A BUYER FOR THE COMPANY

DANBURY, Conn., January 31, 2000 - Trex Medical Corporation (ASE-TXM) announced
today that its ultimate parent company, Thermo Electron Corporation (NYSE-TMO),
plans to seek a buyer for the company. This action is part of a major
reorganization plan under which Thermo Electron will spin in, spin off, and sell
various businesses to focus solely on its core measurement and detection
instruments business.

         William J. Webb, president and chief executive officer of Trex Medical,
said, "Our leading market positions in X-ray mammography and digital dental
imaging, coupled with our recently completed restructuring activities, should
position Trex Medical well as we move forward. Since Thermo Electron has made a
decision to exit the medical imaging business, we hope to align ourselves with a
premier player in our industry that offers strategic focus, targeted marketing
strength, and a greater opportunity for growth."

         Trex Medical Corporation is the world's leading manufacturer of
mammography equipment and a leading manufacturer of digital dental X-ray
equipment. In addition, the company manufactures general-purpose and specialized
medical imaging systems, including those used during diagnostic and
interventional vascular and cardiac procedures, such as balloon angioplasty.
More information is available on the Internet at
http://www.thermo.com/subsid/txm1.html.

The following constitutes a "Safe Harbor" statement under the Private Securities
Litigation Reform Act of 1995: This press release contains forward-looking
statements that involve a number of risks and uncertainties. Important factors
that could cause actual results to differ materially from those indicated by
such forward-looking statements are set forth under the heading "Forward-looking
Statements" in Exhibit 13 to the company's annual report on form 10-K for the
fiscal year ended October 2, 1999. These include risks and uncertainties
relating to: dependency on capital spending policies, technological change,
product development and commercialization, the company's acquisition strategy,
competition, dependency on patents and property rights, intellectual property
litigation, government regulation and approvals, healthcare reform, patient
reimbursement, potential product liability, international operations, the cash
management arrangement with Thermo Electron Corporation, and the potential
impact of the year 2000 on processing date-sensitive information.