For Immediate Release - 5/10/05

"We are pleased to enter into this new agreement and to build upon the contract already in place covering our mammography product line," said, Jack W. Cumming, Hologic's Chairman and Chief Executive Officer. "We appreciate the strong relationship we have built with HPG and its member organizations and believe this agreement further demonstrates that Hologic's advanced imaging systems are gaining acceptance in the marketplace. We now have the opportunity to offer our complete line of products to many more clinics and hospitals that value our technology leadership and the exceptional quality our products offer."

About HealthTrust

HealthTrust Purchasing Group (HPG), headquartered in Brentwood, Tennessee, is a group purchasing organization (GPO) that supports not-for-profit and for-profit acute care hospitals, ambulatory surgery centers, alternate care sites, and physician practices. With an annual purchasing volume of more than $6 billion, HPG is committed to obtaining the best price for clinically-recommended products, ensuring timely delivery and continuously evaluating and improving services to the patients, physicians and clinicians the company serves.

About Hologic

Hologic Inc. is a leading developer, manufacturer and supplier of medical imaging systems dedicated to serving the healthcare needs of women, and a leading developer of state-of-the-art digital imaging technology for general radiography and mammography applications. Hologic's core business units are focused on osteoporosis assessment, mammography and breast biopsy, direct-to-digital x-ray for general radiography applications and mini C-arm imaging for orthopedic applications.

Forward Looking Disclaimer

This News Release contains forward-looking information that involves risks and uncertainties, including statements about Hologic's plans, objectives, expectations and intentions. Such statements include, without limitation, statements regarding the relationship and anticipated benefits from Hologic's agreement with HealthTrust Purchasing Group and market acceptance of Hologic's advanced imaging systems. These forward-looking statements are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those anticipated. Factors that could cause actual results to materially differ include, without limitation, Hologic's and HPG's limited experience in working together, including the risk that HPG's participating hospitals may choose not to purchase Hologic's products; the early stage of market development for Hologic's advanced imaging systems; and other factors described in Hologic's filings with the Securities and Exchange Commission. Hologic expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any such statements to reflect any change in Hologic's expectations or any change in events, conditions or circumstances on which any such statement is based.