For Immediate Release - January 19, 2005

Dr. Niklason has an extensive background in digital imaging technology. He was one of the original developers of breast tomosynthesis while employed as a medical physicist in the department of radiology at the Massachusetts General Hospital in Boston. Dr. Niklason has enjoyed a success-based career and is internationally known and respected among his peers in medical imaging.

Tomosynthesis is a 3-D imaging technology that involves the acquisition of multiple images of a stationary compressed breast from different angles during a short scan. Hologic first demonstrated tomosynthesis with patient images and a prototype system as an add-on to its Selenia full field digital mammography system at the Radiological Society of North America meeting in Chicago in November 2003. Clinical trials began in the summer of 2004 at major university research sites in the United States.

"We are very pleased to have Dr. Niklason join Hologic to assist in the Company's research and development for tomosynthesis," said Jack Cumming, Hologic's Chairman and CEO. "As co-developer of breast tomosynthesis, Dr. Niklason brings a broad base of knowledge and expertise in the areas of clinical development and project management gained over a 20 year career in the medical industry. With multiple product phases planned for tomosynthesis development in 2005, Dr. Niklason's expertise integrated with our strong team of scientists and engineers make this a very exciting time for Hologic."

Dr. Niklason joins Hologic after serving as an advisor in the field of digital imaging. In addition, Dr. Niklason has held academic faculty positions at Harvard University Medical School and the University of Michigan.

Commenting on his appointment, Dr. Niklason stated, "I am honored to become a part of the Hologic team developing breast tomosynthesis, a technology that I believe will revolutionize breast cancer detection".