This is not the site you seek. You may be looking for:

• Dimensions Healthcare System
  An integrated, local, not-for-profit healthcare system
  http://www.dimensionshealth.org/
  Prince George's County, Maryland, USA
• Dimensions (UK) Ltd,
  Expert support services for people with learning disabilities and autism
  http://dimensions-uk.org.org/
  West Berkshire, England

Other possible dimension web sites.